6:47 a.m.
Introduce a bunch of new virsh commands for managing checkpoints
in isolation. More commands are needed for performing incremental
backups, but these commands were easy to implement by modeling
heavily after virsh-snapshot.c (no need for checkpoint-revert,
and checkpoint-list was a lot easier since we don't have to cater
to older libvirt API).
Signed-off-by: Eric Blake <eblake(a)redhat.com>
---
tools/virsh-checkpoint.h | 29 +
tools/virsh-completer.h | 4 +
tools/virsh-util.h | 3 +
tools/virsh.h | 1 +
po/POTFILES | 1 +
tools/Makefile.am | 3 +-
tools/virsh-checkpoint.c | 1377 ++++++++++++++++++++++++++++++++++
tools/virsh-completer.c | 52 +-
tools/virsh-domain-monitor.c | 25 +-
tools/virsh-domain.c | 22 +
tools/virsh-util.c | 11 +
tools/virsh.c | 2 +
tools/virsh.pod | 240 +++++-
13 files changed, 1757 insertions(+), 13 deletions(-)
create mode 100644 tools/virsh-checkpoint.h
create mode 100644 tools/virsh-checkpoint.c
diff --git a/tools/virsh-checkpoint.h b/tools/virsh-checkpoint.h
new file mode 100644
index 0000000000..707defa1c5
--- /dev/null
+++ b/tools/virsh-checkpoint.h
@@ -0,0 +1,29 @@
+/*
+ * virsh-checkpoint.h: Commands to manage domain checkpoints
+ *
+ * Copyright (C) 2005-2018 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>;.
+ *
+ */
+
+#ifndef LIBVIRT_VIRSH_CHECKPOINT_H
+# define LIBVIRT_VIRSH_CHECKPOINT_H
+
+# include "virsh.h"
+
+extern const vshCmdDef checkpointCmds[];
+
+#endif /* LIBVIRT_VIRSH_CHECKPOINT_H */
diff --git a/tools/virsh-completer.h b/tools/virsh-completer.h
index 2e2e1edafb..429e695a55 100644
--- a/tools/virsh-completer.h
+++ b/tools/virsh-completer.h
@@ -75,6 +75,10 @@ char ** virshSecretUUIDCompleter(vshControl *ctl,
const vshCmd *cmd,
unsigned int flags);
+char ** virshCheckpointNameCompleter(vshControl *ctl,
+ const vshCmd *cmd,
+ unsigned int flags);
+
char ** virshSnapshotNameCompleter(vshControl *ctl,
const vshCmd *cmd,
unsigned int flags);
diff --git a/tools/virsh-util.h b/tools/virsh-util.h
index fb2ed277af..f814558144 100644
--- a/tools/virsh-util.h
+++ b/tools/virsh-util.h
@@ -43,6 +43,9 @@ virshCommandOptDomain(vshControl *ctl,
void
virshDomainFree(virDomainPtr dom);
+void
+virshDomainCheckpointFree(virDomainCheckpointPtr chk);
+
void
virshDomainSnapshotFree(virDomainSnapshotPtr snap);
diff --git a/tools/virsh.h b/tools/virsh.h
index 254ce3289e..da157d6caa 100644
--- a/tools/virsh.h
+++ b/tools/virsh.h
@@ -41,6 +41,7 @@
/*
* Command group types
*/
+# define VIRSH_CMD_GRP_CHECKPOINT "Checkpoint"
# define VIRSH_CMD_GRP_DOM_MANAGEMENT "Domain Management"
# define VIRSH_CMD_GRP_DOM_MONITORING "Domain Monitoring"
# define VIRSH_CMD_GRP_STORAGE_POOL "Storage Pool"
diff --git a/po/POTFILES b/po/POTFILES
index 57c55fb35f..70417cd01b 100644
--- a/po/POTFILES
+++ b/po/POTFILES
@@ -300,6 +300,7 @@ src/xenconfig/xen_xl.c
src/xenconfig/xen_xm.c
tests/virpolkittest.c
tools/libvirt-guests.sh.in
+tools/virsh-checkpoint.c
tools/virsh-console.c
tools/virsh-domain-monitor.c
tools/virsh-domain.c
diff --git a/tools/Makefile.am b/tools/Makefile.am
index f2f84f7852..5a4facb3fb 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -1,4 +1,4 @@
-## Copyright (C) 2005-2016 Red Hat, Inc.
+## Copyright (C) 2005-2018 Red Hat, Inc.
## Copyright (C) 2013 Yuto KAWAMURA(kawamuray) <kawamuray.dadada(a)gmail.com>
##
## This library is free software; you can redistribute it and/or
@@ -220,6 +220,7 @@ virt_login_shell_CFLAGS = \
virsh_SOURCES = \
virsh.c virsh.h \
+ virsh-checkpoint.c virsh-checkpoint.h \
virsh-completer.c virsh-completer.h \
virsh-console.c virsh-console.h \
virsh-domain.c virsh-domain.h \
diff --git a/tools/virsh-checkpoint.c b/tools/virsh-checkpoint.c
new file mode 100644
index 0000000000..a85797653f
--- /dev/null
+++ b/tools/virsh-checkpoint.c
@@ -0,0 +1,1377 @@
+/*
+ * virsh-checkpoint.c: Commands to manage domain checkpoints
+ *
+ * Copyright (C) 2005-2019 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>;.
+ *
+ * Daniel Veillard <veillard(a)redhat.com>
+ * Karel Zak <kzak(a)redhat.com>
+ * Daniel P. Berrange <berrange(a)redhat.com>
+ *
+ */
+
+#include <config.h>
+#include "virsh-checkpoint.h"
+
+#include <assert.h>
+
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <libxml/xpath.h>
+#include <libxml/xmlsave.h>
+
+#include "internal.h"
+#include "virbuffer.h"
+#include "viralloc.h"
+#include "virfile.h"
+#include "virsh-util.h"
+#include "virstring.h"
+#include "virxml.h"
+#include "conf/checkpoint_conf.h"
+
+/* Helper for checkpoint-create and checkpoint-create-as */
+static bool
+virshCheckpointCreate(vshControl *ctl,
+ virDomainPtr dom,
+ const char *buffer,
+ unsigned int flags,
+ const char *from)
+{
+ bool ret = false;
+ virDomainCheckpointPtr checkpoint;
+ const char *name = NULL;
+
+ checkpoint = virDomainCheckpointCreateXML(dom, buffer, flags);
+
+ if (checkpoint == NULL)
+ goto cleanup;
+
+ if (flags & VIR_DOMAIN_CHECKPOINT_CREATE_REDEFINE_LIST) {
+ vshPrintExtra(ctl, "%s",
+ _("Domain checkpoint list imported successfully"));
+ ret = true;
+ goto cleanup;
+ }
+
+ name = virDomainCheckpointGetName(checkpoint);
+ if (!name) {
+ vshError(ctl, "%s", _("Could not get snapshot name"));
+ goto cleanup;
+ }
+
+ if (from)
+ vshPrintExtra(ctl, _("Domain checkpoint %s created from
'%s'"),
+ name, from);
+ else
+ vshPrintExtra(ctl, _("Domain checkpoint %s created"), name);
+
+ ret = true;
+
+ cleanup:
+ virshDomainCheckpointFree(checkpoint);
+ return ret;
+}
+
+
+/*
+ * "checkpoint-create" command
+ */
+static const vshCmdInfo info_checkpoint_create[] = {
+ {.name = "help",
+ .data = N_("Create a checkpoint from XML")
+ },
+ {.name = "desc",
+ .data = N_("Create a checkpoint from XML for use in "
+ "future incremental backups")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_checkpoint_create[] = {
+ VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+ {.name = "xmlfile",
+ .type = VSH_OT_STRING,
+ .help = N_("domain checkpoint XML")
+ },
+ {.name = "redefine",
+ .type = VSH_OT_BOOL,
+ .help = N_("redefine metadata for existing checkpoint")
+ },
+ VIRSH_COMMON_OPT_CURRENT(N_("with redefine, set current checkpoint")),
+ {.name = "redefine-list",
+ .type = VSH_OT_BOOL,
+ .help = N_("bulk define a set of checkpoints, implies --redefine"),
+ },
+ {.name = "no-metadata",
+ .type = VSH_OT_BOOL,
+ .help = N_("create checkpoint but create no metadata")
+ },
+ {.name = "quiesce",
+ .type = VSH_OT_BOOL,
+ .help = N_("quiesce guest's file systems")
+ },
+ {.name = NULL}
+};
+
+static bool
+cmdCheckpointCreate(vshControl *ctl,
+ const vshCmd *cmd)
+{
+ virDomainPtr dom = NULL;
+ bool ret = false;
+ const char *from = NULL;
+ char *buffer = NULL;
+ unsigned int flags = 0;
+
+ if (vshCommandOptBool(cmd, "redefine"))
+ flags |= VIR_DOMAIN_CHECKPOINT_CREATE_REDEFINE;
+ if (vshCommandOptBool(cmd, "current"))
+ flags |= VIR_DOMAIN_CHECKPOINT_CREATE_CURRENT;
+ if (vshCommandOptBool(cmd, "no-metadata"))
+ flags |= VIR_DOMAIN_CHECKPOINT_CREATE_NO_METADATA;
+ if (vshCommandOptBool(cmd, "quiesce"))
+ flags |= VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE;
+ if (vshCommandOptBool(cmd, "redefine-list"))
+ flags |= VIR_DOMAIN_CHECKPOINT_CREATE_REDEFINE |
+ VIR_DOMAIN_CHECKPOINT_CREATE_REDEFINE_LIST;
+
+ if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
+ goto cleanup;
+
+ if (vshCommandOptStringReq(ctl, cmd, "xmlfile", &from) < 0)
+ goto cleanup;
+ if (!from) {
+ buffer = vshStrdup(ctl, "<domaincheckpoint/>");
+ } else {
+ if (virFileReadAll(from, VSH_MAX_XML_FILE, &buffer) < 0) {
+ vshSaveLibvirtError();
+ goto cleanup;
+ }
+ }
+
+ ret = virshCheckpointCreate(ctl, dom, buffer, flags, from);
+
+ cleanup:
+ VIR_FREE(buffer);
+ virshDomainFree(dom);
+
+ return ret;
+}
+
+
+/*
+ * "checkpoint-create-as" command
+ */
+static int
+virshParseCheckpointDiskspec(vshControl *ctl,
+ virBufferPtr buf,
+ const char *str)
+{
+ int ret = -1;
+ const char *name = NULL;
+ const char *checkpoint = NULL;
+ const char *bitmap = NULL;
+ char **array = NULL;
+ int narray;
+ size_t i;
+
+ narray = vshStringToArray(str, &array);
+ if (narray <= 0)
+ goto cleanup;
+
+ name = array[0];
+ for (i = 1; i < narray; i++) {
+ if (!checkpoint && STRPREFIX(array[i], "checkpoint="))
+ checkpoint = array[i] + strlen("checkpoint=");
+ else if (!bitmap && STRPREFIX(array[i], "bitmap="))
+ bitmap = array[i] + strlen("bitmap=");
+ else
+ goto cleanup;
+ }
+
+ virBufferEscapeString(buf, "<disk name='%s'", name);
+ if (checkpoint)
+ virBufferAsprintf(buf, " checkpoint='%s'", checkpoint);
+ if (bitmap)
+ virBufferAsprintf(buf, " bitmap='%s'", bitmap);
+ virBufferAddLit(buf, "/>\n");
+ ret = 0;
+ cleanup:
+ if (ret < 0)
+ vshError(ctl, _("unable to parse diskspec: %s"), str);
+ virStringListFree(array);
+ return ret;
+}
+
+static const vshCmdInfo info_checkpoint_create_as[] = {
+ {.name = "help",
+ .data = N_("Create a checkpoint from a set of args")
+ },
+ {.name = "desc",
+ .data = N_("Create a checkpoint from arguments for use in "
+ "future incremental backups")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_checkpoint_create_as[] = {
+ VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+ {.name = "name",
+ .type = VSH_OT_STRING,
+ .help = N_("name of checkpoint")
+ },
+ {.name = "description",
+ .type = VSH_OT_STRING,
+ .help = N_("description of checkpoint")
+ },
+ {.name = "print-xml",
+ .type = VSH_OT_BOOL,
+ .help = N_("print XML document rather than create")
+ },
+ {.name = "no-metadata",
+ .type = VSH_OT_BOOL,
+ .help = N_("take checkpoint but create no metadata")
+ },
+ {.name = "quiesce",
+ .type = VSH_OT_BOOL,
+ .help = N_("quiesce guest's file systems")
+ },
+ {.name = "diskspec",
+ .type = VSH_OT_ARGV,
+ .help = N_("disk attributes: disk[,checkpoint=type][,bitmap=name]")
+ },
+ {.name = NULL}
+};
+
+
+static bool
+cmdCheckpointCreateAs(vshControl *ctl,
+ const vshCmd *cmd)
+{
+ virDomainPtr dom = NULL;
+ bool ret = false;
+ char *buffer = NULL;
+ const char *name = NULL;
+ const char *desc = NULL;
+ virBuffer buf = VIR_BUFFER_INITIALIZER;
+ unsigned int flags = 0;
+ const vshCmdOpt *opt = NULL;
+
+ if (vshCommandOptBool(cmd, "no-metadata")) {
+ if (vshCommandOptBool(cmd, "print-xml")) {
+ vshError(ctl, "%s",
+ _("--print-xml is incompatible with --no-metadata"));
+ return false;
+ }
+ flags |= VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA;
+ }
+ if (vshCommandOptBool(cmd, "quiesce"))
+ flags |= VIR_DOMAIN_CHECKPOINT_CREATE_QUIESCE;
+
+ if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
+ return false;
+
+ if (vshCommandOptStringReq(ctl, cmd, "name", &name) < 0 ||
+ vshCommandOptStringReq(ctl, cmd, "description", &desc) < 0)
+ goto cleanup;
+
+ virBufferAddLit(&buf, "<domaincheckpoint>\n");
+ virBufferAdjustIndent(&buf, 2);
+ virBufferEscapeString(&buf, "<name>%s</name>\n", name);
+ virBufferEscapeString(&buf,
"<description>%s</description>\n", desc);
+
+ if (vshCommandOptBool(cmd, "diskspec")) {
+ virBufferAddLit(&buf, "<disks>\n");
+ virBufferAdjustIndent(&buf, 2);
+ while ((opt = vshCommandOptArgv(ctl, cmd, opt))) {
+ if (virshParseCheckpointDiskspec(ctl, &buf, opt->data) < 0)
+ goto cleanup;
+ }
+ virBufferAdjustIndent(&buf, -2);
+ virBufferAddLit(&buf, "</disks>\n");
+ }
+ virBufferAdjustIndent(&buf, -2);
+ virBufferAddLit(&buf, "</domaincheckpoint>\n");
+
+ if (virBufferError(&buf)) {
+ vshError(ctl, "%s", _("Out of memory"));
+ goto cleanup;
+ }
+
+ buffer = virBufferContentAndReset(&buf);
+
+ if (vshCommandOptBool(cmd, "print-xml")) {
+ vshPrint(ctl, "%s\n", buffer);
+ ret = true;
+ goto cleanup;
+ }
+
+ ret = virshCheckpointCreate(ctl, dom, buffer, flags, NULL);
+
+ cleanup:
+ virBufferFreeAndReset(&buf);
+ VIR_FREE(buffer);
+ virshDomainFree(dom);
+
+ return ret;
+}
+
+
+/* Helper for resolving {--current | --ARG name} into a checkpoint
+ * belonging to DOM. If EXCLUSIVE, fail if both --current and arg are
+ * present. On success, populate *CHK and *NAME, before returning 0.
+ * On failure, return -1 after issuing an error message. */
+static int
+virshLookupCheckpoint(vshControl *ctl,
+ const vshCmd *cmd,
+ const char *arg,
+ bool exclusive,
+ virDomainPtr dom,
+ virDomainCheckpointPtr *chk,
+ const char **name)
+{
+ bool current = vshCommandOptBool(cmd, "current");
+ const char *chkname = NULL;
+
+ if (vshCommandOptStringReq(ctl, cmd, arg, &chkname) < 0)
+ return -1;
+
+ if (exclusive && current && chkname) {
+ vshError(ctl, _("--%s and --current are mutually exclusive"), arg);
+ return -1;
+ }
+
+ if (chkname) {
+ *chk = virDomainCheckpointLookupByName(dom, chkname, 0);
+ } else if (current) {
+ *chk = virDomainCheckpointCurrent(dom, 0);
+ } else {
+ vshError(ctl, _("--%s or --current is required"), arg);
+ return -1;
+ }
+ if (!*chk) {
+ vshReportError(ctl);
+ return -1;
+ }
+
+ *name = virDomainCheckpointGetName(*chk);
+ return 0;
+}
+
+
+/*
+ * "checkpoint-edit" command
+ */
+static const vshCmdInfo info_checkpoint_edit[] = {
+ {.name = "help",
+ .data = N_("edit XML for a checkpoint")
+ },
+ {.name = "desc",
+ .data = N_("Edit the domain checkpoint XML for a named checkpoint")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_checkpoint_edit[] = {
+ VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+ {.name = "checkpointname",
+ .type = VSH_OT_STRING,
+ .help = N_("checkpoint name"),
+ .completer = virshCheckpointNameCompleter,
+ },
+ VIRSH_COMMON_OPT_CURRENT(N_("also set edited checkpoint as current")),
+ {.name = "rename",
+ .type = VSH_OT_BOOL,
+ .help = N_("allow renaming an existing checkpoint")
+ },
+ {.name = "clone",
+ .type = VSH_OT_BOOL,
+ .help = N_("allow cloning to new name")
+ },
+ {.name = NULL}
+};
+
+static bool
+cmdCheckpointEdit(vshControl *ctl,
+ const vshCmd *cmd)
+{
+ virDomainPtr dom = NULL;
+ virDomainCheckpointPtr checkpoint = NULL;
+ virDomainCheckpointPtr edited = NULL;
+ const char *name = NULL;
+ const char *edited_name;
+ bool ret = false;
+ unsigned int getxml_flags = VIR_DOMAIN_CHECKPOINT_XML_SECURE;
+ unsigned int define_flags = VIR_DOMAIN_CHECKPOINT_CREATE_REDEFINE;
+ bool rename_okay = vshCommandOptBool(cmd, "rename");
+ bool clone_okay = vshCommandOptBool(cmd, "clone");
+
+ VSH_EXCLUSIVE_OPTIONS_EXPR("rename", rename_okay, "clone",
clone_okay)
+
+ if (vshCommandOptBool(cmd, "current") &&
+ vshCommandOptBool(cmd, "checkpointname"))
+ define_flags |= VIR_DOMAIN_CHECKPOINT_CREATE_CURRENT;
+
+ if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
+ return false;
+
+ if (virshLookupCheckpoint(ctl, cmd, "checkpointname", false, dom,
+ &checkpoint, &name) < 0)
+ goto cleanup;
+
+#define EDIT_GET_XML \
+ virDomainCheckpointGetXMLDesc(checkpoint, getxml_flags)
+#define EDIT_NOT_CHANGED \
+ do { \
+ /* Depending on flags, we re-edit even if XML is unchanged. */ \
+ if (!(define_flags & VIR_DOMAIN_CHECKPOINT_CREATE_CURRENT)) { \
+ vshPrintExtra(ctl, \
+ _("Checkpoint %s XML configuration not changed.\n"),
\
+ name); \
+ ret = true; \
+ goto edit_cleanup; \
+ } \
+ } while (0)
+#define EDIT_DEFINE \
+ edited = virDomainCheckpointCreateXML(dom, doc_edited, define_flags)
+#include "virsh-edit.c"
+
+ edited_name = virDomainCheckpointGetName(edited);
+ if (STREQ(name, edited_name)) {
+ vshPrintExtra(ctl, _("Checkpoint %s edited.\n"), name);
+ } else if (clone_okay) {
+ vshPrintExtra(ctl, _("Checkpoint %s cloned to %s.\n"), name,
+ edited_name);
+ } else {
+ unsigned int delete_flags;
+
+ delete_flags = VIR_DOMAIN_CHECKPOINT_DELETE_METADATA_ONLY;
+ if (virDomainCheckpointDelete(rename_okay ? checkpoint : edited,
+ delete_flags) < 0) {
+ vshReportError(ctl);
+ vshError(ctl, _("Failed to clean up %s"),
+ rename_okay ? name : edited_name);
+ goto cleanup;
+ }
+ if (!rename_okay) {
+ vshError(ctl, _("Must use --rename or --clone to change %s to
%s"),
+ name, edited_name);
+ goto cleanup;
+ }
+ }
+
+ ret = true;
+
+ cleanup:
+ if (!ret && name)
+ vshError(ctl, _("Failed to update %s"), name);
+ virshDomainCheckpointFree(edited);
+ virshDomainCheckpointFree(checkpoint);
+ virshDomainFree(dom);
+ return ret;
+}
+
+
+/*
+ * "checkpoint-current" command
+ */
+static const vshCmdInfo info_checkpoint_current[] = {
+ {.name = "help",
+ .data = N_("Get or set the current checkpoint")
+ },
+ {.name = "desc",
+ .data = N_("Get or set the current checkpoint")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_checkpoint_current[] = {
+ VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+ {.name = "name",
+ .type = VSH_OT_BOOL,
+ .help = N_("list the name, rather than the full xml")
+ },
+ {.name = "security-info",
+ .type = VSH_OT_BOOL,
+ .help = N_("include security sensitive information in XML dump")
+ },
+ {.name = "no-domain",
+ .type = VSH_OT_BOOL,
+ .help = N_("exclude <domain> from XML")
+ },
+ {.name = "size",
+ .type = VSH_OT_BOOL,
+ .help = N_("include backup size estimate in XML dump")
+ },
+ {.name = "checkpointname",
+ .type = VSH_OT_STRING,
+ .help = N_("name of existing checkpoint to make current"),
+ .completer = virshCheckpointNameCompleter,
+ },
+ {.name = NULL}
+};
+
+static bool
+cmdCheckpointCurrent(vshControl *ctl,
+ const vshCmd *cmd)
+{
+ virDomainPtr dom = NULL;
+ bool ret = false;
+ int current;
+ virDomainCheckpointPtr checkpoint = NULL;
+ char *xml = NULL;
+ const char *checkpointname = NULL;
+ unsigned int flags = 0;
+ const char *domname;
+
+ if (vshCommandOptBool(cmd, "security-info"))
+ flags |= VIR_DOMAIN_CHECKPOINT_XML_SECURE;
+ if (vshCommandOptBool(cmd, "no-domain"))
+ flags |= VIR_DOMAIN_CHECKPOINT_XML_NO_DOMAIN;
+ if (vshCommandOptBool(cmd, "size"))
+ flags |= VIR_DOMAIN_CHECKPOINT_XML_SIZE;
+
+ VSH_EXCLUSIVE_OPTIONS("name", "checkpointname");
+
+ if (!(dom = virshCommandOptDomain(ctl, cmd, &domname)))
+ return false;
+
+ if (vshCommandOptStringReq(ctl, cmd, "checkpointname", &checkpointname)
< 0)
+ goto cleanup;
+
+ if (checkpointname) {
+ virDomainCheckpointPtr checkpoint2 = NULL;
+ flags = (VIR_DOMAIN_CHECKPOINT_CREATE_REDEFINE |
+ VIR_DOMAIN_CHECKPOINT_CREATE_CURRENT);
+
+ if (!(checkpoint = virDomainCheckpointLookupByName(dom,
+ checkpointname, 0)))
+ goto cleanup;
+
+ xml = virDomainCheckpointGetXMLDesc(checkpoint,
+ VIR_DOMAIN_CHECKPOINT_XML_SECURE);
+ if (!xml)
+ goto cleanup;
+
+ if (!(checkpoint2 = virDomainCheckpointCreateXML(dom, xml, flags)))
+ goto cleanup;
+
+ virshDomainCheckpointFree(checkpoint2);
+ vshPrintExtra(ctl, _("Checkpoint %s set as current"), checkpointname);
+ ret = true;
+ goto cleanup;
+ }
+
+ if ((current = virDomainHasCurrentCheckpoint(dom, 0)) < 0)
+ goto cleanup;
+
+ if (!current) {
+ vshError(ctl, _("domain '%s' has no current checkpoint"),
domname);
+ goto cleanup;
+ } else {
+ if (!(checkpoint = virDomainCheckpointCurrent(dom, 0)))
+ goto cleanup;
+
+ if (vshCommandOptBool(cmd, "name")) {
+ const char *name;
+ if (!(name = virDomainCheckpointGetName(checkpoint)))
+ goto cleanup;
+
+ vshPrint(ctl, "%s", name);
+ } else {
+ if (!(xml = virDomainCheckpointGetXMLDesc(checkpoint, flags)))
+ goto cleanup;
+
+ vshPrint(ctl, "%s", xml);
+ }
+ }
+
+ ret = true;
+
+ cleanup:
+ if (!ret)
+ vshReportError(ctl);
+ VIR_FREE(xml);
+ virshDomainCheckpointFree(checkpoint);
+ virshDomainFree(dom);
+
+ return ret;
+}
+
+
+/* Helper function to get the name of a checkpoint's parent. Caller
+ * must free the result. Returns 0 on success (including when it was
+ * proven no parent exists), and -1 on failure with error reported
+ * (such as no checkpoint support or domain deleted in meantime). */
+static int
+virshGetCheckpointParent(vshControl *ctl,
+ virDomainCheckpointPtr checkpoint,
+ char **parent_name)
+{
+ virDomainCheckpointPtr parent = NULL;
+ int ret = -1;
+
+ *parent_name = NULL;
+
+ parent = virDomainCheckpointGetParent(checkpoint, 0);
+ if (parent) {
+ /* API works, and virDomainCheckpointGetName will succeed */
+ *parent_name = vshStrdup(ctl, virDomainCheckpointGetName(parent));
+ ret = 0;
+ } else if (last_error->code == VIR_ERR_NO_DOMAIN_CHECKPOINT) {
+ /* API works, and we found a root with no parent */
+ ret = 0;
+ }
+
+ if (ret < 0) {
+ vshReportError(ctl);
+ vshError(ctl, "%s", _("unable to determine if checkpoint has
parent"));
+ } else {
+ vshResetLibvirtError();
+ }
+ virshDomainCheckpointFree(parent);
+ return ret;
+}
+
+
+/*
+ * "checkpoint-info" command
+ */
+static const vshCmdInfo info_checkpoint_info[] = {
+ {.name = "help",
+ .data = N_("checkpoint information")
+ },
+ {.name = "desc",
+ .data = N_("Returns basic information about a checkpoint.")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_checkpoint_info[] = {
+ VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+ {.name = "checkpointname",
+ .type = VSH_OT_STRING,
+ .help = N_("checkpoint name"),
+ .completer = virshCheckpointNameCompleter,
+ },
+ VIRSH_COMMON_OPT_CURRENT(N_("info on current checkpoint")),
+ {.name = NULL}
+};
+
+
+static bool
+cmdCheckpointInfo(vshControl *ctl,
+ const vshCmd *cmd)
+{
+ virDomainPtr dom;
+ virDomainCheckpointPtr checkpoint = NULL;
+ const char *name;
+ char *parent = NULL;
+ bool ret = false;
+ int count;
+ unsigned int flags;
+ int current;
+ int metadata;
+
+ dom = virshCommandOptDomain(ctl, cmd, NULL);
+ if (dom == NULL)
+ return false;
+
+ if (virshLookupCheckpoint(ctl, cmd, "checkpointname", true, dom,
+ &checkpoint, &name) < 0)
+ goto cleanup;
+
+ vshPrint(ctl, "%-15s %s\n", _("Name:"), name);
+ vshPrint(ctl, "%-15s %s\n", _("Domain:"),
virDomainGetName(dom));
+
+ /* Determine if checkpoint is current. */
+ current = virDomainCheckpointIsCurrent(checkpoint, 0);
+ if (current < 0) {
+ vshError(ctl, "%s",
+ _("unexpected problem querying checkpoint state"));
+ goto cleanup;
+ }
+ vshPrint(ctl, "%-15s %s\n", _("Current:"),
+ current > 0 ? _("yes") : _("no"));
+
+ if (virshGetCheckpointParent(ctl, checkpoint, &parent) < 0) {
+ vshError(ctl, "%s",
+ _("unexpected problem querying checkpoint state"));
+ goto cleanup;
+ }
+ vshPrint(ctl, "%-15s %s\n", _("Parent:"), parent ? parent :
"-");
+
+ /* Children, Descendants. */
+ flags = 0;
+ count = virDomainCheckpointListChildren(checkpoint, NULL, flags);
+ if (count < 0) {
+ if (last_error->code == VIR_ERR_NO_SUPPORT) {
+ vshResetLibvirtError();
+ ret = true;
+ }
+ goto cleanup;
+ }
+ vshPrint(ctl, "%-15s %d\n", _("Children:"), count);
+ flags = VIR_DOMAIN_CHECKPOINT_LIST_DESCENDANTS;
+ count = virDomainCheckpointListChildren(checkpoint, NULL, flags);
+ if (count < 0)
+ goto cleanup;
+ vshPrint(ctl, "%-15s %d\n", _("Descendants:"), count);
+
+ /* Metadata. */
+ metadata = virDomainCheckpointHasMetadata(checkpoint, 0);
+ if (metadata >= 0)
+ vshPrint(ctl, "%-15s %s\n", _("Metadata:"),
+ metadata ? _("yes") : _("no"));
+
+ ret = true;
+
+ cleanup:
+ VIR_FREE(parent);
+ virshDomainCheckpointFree(checkpoint);
+ virshDomainFree(dom);
+ return ret;
+}
+
+
+/* Helpers for collecting a list of checkpoints. */
+struct virshChk {
+ virDomainCheckpointPtr chk;
+ char *parent;
+};
+struct virshCheckpointList {
+ struct virshChk *chks;
+ int nchks;
+};
+typedef struct virshCheckpointList *virshCheckpointListPtr;
+
+static void
+virshCheckpointListFree(virshCheckpointListPtr chklist)
+{
+ size_t i;
+
+ if (!chklist)
+ return;
+ if (chklist->chks) {
+ for (i = 0; i < chklist->nchks; i++) {
+ virshDomainCheckpointFree(chklist->chks[i].chk);
+ VIR_FREE(chklist->chks[i].parent);
+ }
+ VIR_FREE(chklist->chks);
+ }
+ VIR_FREE(chklist);
+}
+
+
+static int
+virshChkSorter(const void *a,
+ const void *b)
+{
+ const struct virshChk *sa = a;
+ const struct virshChk *sb = b;
+
+ if (sa->chk && !sb->chk)
+ return -1;
+ if (!sa->chk)
+ return sb->chk != NULL;
+
+ return vshStrcasecmp(virDomainCheckpointGetName(sa->chk),
+ virDomainCheckpointGetName(sb->chk));
+}
+
+
+/* Compute a list of checkpoints from DOM. If FROM is provided, the
+ * list is limited to descendants of the given checkpoint. If FLAGS is
+ * given, the list is filtered. If TREE is specified, then all but
+ * FROM or the roots will also have parent information. */
+static virshCheckpointListPtr
+virshCheckpointListCollect(vshControl *ctl,
+ virDomainPtr dom,
+ virDomainCheckpointPtr from,
+ unsigned int orig_flags,
+ bool tree)
+{
+ size_t i;
+ char **names = NULL;
+ int count = -1;
+ virDomainCheckpointPtr *chks;
+ virshCheckpointListPtr chklist = vshMalloc(ctl, sizeof(*chklist));
+ virshCheckpointListPtr ret = NULL;
+ unsigned int flags = orig_flags;
+
+ if (from)
+ count = virDomainCheckpointListChildren(from, &chks, flags);
+ else
+ count = virDomainListCheckpoints(dom, &chks, flags);
+ if (count < 0) {
+ vshError(ctl, "%s",
+ _("unexpected problem querying checkpoints"));
+ goto cleanup;
+ }
+
+ /* When mixing --from and --tree, we also want a copy of from
+ * in the list, but with no parent for that one entry. */
+ chklist->chks = vshCalloc(ctl, count + (tree && from),
+ sizeof(*chklist->chks));
+ chklist->nchks = count;
+ for (i = 0; i < count; i++)
+ chklist->chks[i].chk = chks[i];
+ VIR_FREE(chks);
+ if (tree) {
+ for (i = 0; i < count; i++) {
+ if (virshGetCheckpointParent(ctl, chklist->chks[i].chk,
+ &chklist->chks[i].parent) < 0)
+ goto cleanup;
+ }
+ if (from) {
+ chklist->chks[chklist->nchks++].chk = from;
+ virDomainCheckpointRef(from);
+ }
+ }
+
+ qsort(chklist->chks, chklist->nchks, sizeof(*chklist->chks),
+ virshChkSorter);
+
+ ret = chklist;
+ chklist = NULL;
+
+ cleanup:
+ virshCheckpointListFree(chklist);
+ if (names && count > 0)
+ for (i = 0; i < count; i++)
+ VIR_FREE(names[i]);
+ VIR_FREE(names);
+ return ret;
+}
+
+
+static const char *
+virshCheckpointListLookup(int id,
+ bool parent,
+ void *opaque)
+{
+ virshCheckpointListPtr chklist = opaque;
+ if (parent)
+ return chklist->chks[id].parent;
+ return virDomainCheckpointGetName(chklist->chks[id].chk);
+}
+
+
+/*
+ * "checkpoint-list" command
+ */
+static const vshCmdInfo info_checkpoint_list[] = {
+ {.name = "help",
+ .data = N_("List checkpoints for a domain")
+ },
+ {.name = "desc",
+ .data = N_("Checkpoint List")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_checkpoint_list[] = {
+ VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+ {.name = "parent",
+ .type = VSH_OT_BOOL,
+ .help = N_("add a column showing parent checkpoint")
+ },
+ {.name = "roots",
+ .type = VSH_OT_BOOL,
+ .help = N_("list only checkpoints without parents")
+ },
+ {.name = "leaves",
+ .type = VSH_OT_BOOL,
+ .help = N_("list only checkpoints without children")
+ },
+ {.name = "no-leaves",
+ .type = VSH_OT_BOOL,
+ .help = N_("list only checkpoints that are not leaves (with children)")
+ },
+ {.name = "metadata",
+ .type = VSH_OT_BOOL,
+ .help = N_("list only checkpoints that have metadata that would prevent
undefine")
+ },
+ {.name = "no-metadata",
+ .type = VSH_OT_BOOL,
+ .help = N_("list only checkpoints that have no metadata managed by
libvirt")
+ },
+ {.name = "tree",
+ .type = VSH_OT_BOOL,
+ .help = N_("list checkpoints in a tree")
+ },
+ {.name = "from",
+ .type = VSH_OT_STRING,
+ .help = N_("limit list to children of given checkpoint"),
+ .completer = virshCheckpointNameCompleter,
+ },
+ VIRSH_COMMON_OPT_CURRENT(N_("limit list to children of current
checkpoint")),
+ {.name = "descendants",
+ .type = VSH_OT_BOOL,
+ .help = N_("with --from, list all descendants")
+ },
+ {.name = "name",
+ .type = VSH_OT_BOOL,
+ .help = N_("list checkpoint names only")
+ },
+
+ {.name = NULL}
+};
+
+static bool
+cmdCheckpointList(vshControl *ctl,
+ const vshCmd *cmd)
+{
+ virDomainPtr dom = NULL;
+ bool ret = false;
+ unsigned int flags = 0;
+ size_t i;
+ xmlDocPtr xml = NULL;
+ xmlXPathContextPtr ctxt = NULL;
+ char *doc = NULL;
+ virDomainCheckpointPtr checkpoint = NULL;
+ long long creation_longlong;
+ time_t creation_time_t;
+ char timestr[100];
+ struct tm time_info;
+ bool tree = vshCommandOptBool(cmd, "tree");
+ bool name = vshCommandOptBool(cmd, "name");
+ bool from = vshCommandOptBool(cmd, "from");
+ bool parent = vshCommandOptBool(cmd, "parent");
+ bool roots = vshCommandOptBool(cmd, "roots");
+ bool current = vshCommandOptBool(cmd, "current");
+ const char *from_chk = NULL;
+ char *parent_chk = NULL;
+ virDomainCheckpointPtr start = NULL;
+ virshCheckpointListPtr chklist = NULL;
+
+ VSH_EXCLUSIVE_OPTIONS_VAR(tree, name);
+ VSH_EXCLUSIVE_OPTIONS_VAR(parent, roots);
+ VSH_EXCLUSIVE_OPTIONS_VAR(parent, tree);
+ VSH_EXCLUSIVE_OPTIONS_VAR(roots, tree);
+ VSH_EXCLUSIVE_OPTIONS_VAR(roots, from);
+ VSH_EXCLUSIVE_OPTIONS_VAR(roots, current);
+
+#define FILTER(option, flag) \
+ do { \
+ if (vshCommandOptBool(cmd, option)) { \
+ if (tree) { \
+ vshError(ctl, \
+ _("--%s and --tree are mutually exclusive"), \
+ option); \
+ return false; \
+ } \
+ flags |= VIR_DOMAIN_CHECKPOINT_LIST_ ## flag; \
+ } \
+ } while (0)
+
+ FILTER("leaves", LEAVES);
+ FILTER("no-leaves", NO_LEAVES);
+#undef FILTER
+
+ if (roots)
+ flags |= VIR_DOMAIN_CHECKPOINT_LIST_ROOTS;
+
+ if (vshCommandOptBool(cmd, "metadata"))
+ flags |= VIR_DOMAIN_CHECKPOINT_LIST_METADATA;
+
+ if (vshCommandOptBool(cmd, "no-metadata"))
+ flags |= VIR_DOMAIN_CHECKPOINT_LIST_NO_METADATA;
+
+ if (vshCommandOptBool(cmd, "descendants")) {
+ if (!from && !current) {
+ vshError(ctl, "%s",
+ _("--descendants requires either --from or --current"));
+ return false;
+ }
+ flags |= VIR_DOMAIN_CHECKPOINT_LIST_DESCENDANTS;
+ }
+
+ if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
+ return false;
+
+ if ((from || current) &&
+ virshLookupCheckpoint(ctl, cmd, "from", true, dom, &start,
&from_chk) < 0)
+ goto cleanup;
+
+ if (!(chklist = virshCheckpointListCollect(ctl, dom, start, flags, tree)))
+ goto cleanup;
+
+ if (!tree && !name) {
+ if (parent)
+ vshPrintExtra(ctl, " %-20s %-25s %s",
+ _("Name"), _("Creation Time"),
_("Parent"));
+ else
+ vshPrintExtra(ctl, " %-20s %-25s",
+ _("Name"), _("Creation Time"));
+ vshPrintExtra(ctl, "\n"
+ "------------------------------"
+ "--------------\n");
+ }
+
+ if (tree) {
+ for (i = 0; i < chklist->nchks; i++) {
+ if (!chklist->chks[i].parent &&
+ vshTreePrint(ctl, virshCheckpointListLookup, chklist,
+ chklist->nchks, i) < 0)
+ goto cleanup;
+ }
+ ret = true;
+ goto cleanup;
+ }
+
+ for (i = 0; i < chklist->nchks; i++) {
+ const char *chk_name;
+
+ /* free up memory from previous iterations of the loop */
+ VIR_FREE(parent_chk);
+ xmlXPathFreeContext(ctxt);
+ xmlFreeDoc(xml);
+ VIR_FREE(doc);
+
+ checkpoint = chklist->chks[i].chk;
+ chk_name = virDomainCheckpointGetName(checkpoint);
+ assert(chk_name);
+
+ if (name) {
+ /* just print the checkpoint name */
+ vshPrint(ctl, "%s\n", chk_name);
+ continue;
+ }
+
+ if (!(doc = virDomainCheckpointGetXMLDesc(checkpoint, 0)))
+ continue;
+
+ if (!(xml = virXMLParseStringCtxt(doc, _("(domain_checkpoint)"),
&ctxt)))
+ continue;
+
+ if (parent)
+ parent_chk =
virXPathString("string(/domaincheckpoint/parent/name)",
+ ctxt);
+
+ if (virXPathLongLong("string(/domaincheckpoint/creationTime)", ctxt,
+ &creation_longlong) < 0)
+ continue;
+ creation_time_t = creation_longlong;
+ if (creation_time_t != creation_longlong) {
+ vshError(ctl, "%s", _("time_t overflow"));
+ continue;
+ }
+ localtime_r(&creation_time_t, &time_info);
+ strftime(timestr, sizeof(timestr), "%Y-%m-%d %H:%M:%S %z",
+ &time_info);
+
+ if (parent)
+ vshPrint(ctl, " %-20s %-25s %s\n",
+ chk_name, timestr, parent_chk ?: "-");
+ else
+ vshPrint(ctl, " %-20s %-25s\n", chk_name, timestr);
+ }
+
+ ret = true;
+
+ cleanup:
+ /* this frees up memory from the last iteration of the loop */
+ virshCheckpointListFree(chklist);
+ VIR_FREE(parent_chk);
+ virshDomainCheckpointFree(start);
+ xmlXPathFreeContext(ctxt);
+ xmlFreeDoc(xml);
+ VIR_FREE(doc);
+ virshDomainFree(dom);
+
+ return ret;
+}
+
+
+/*
+ * "checkpoint-dumpxml" command
+ */
+static const vshCmdInfo info_checkpoint_dumpxml[] = {
+ {.name = "help",
+ .data = N_("Dump XML for a domain checkpoint")
+ },
+ {.name = "desc",
+ .data = N_("Checkpoint Dump XML")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_checkpoint_dumpxml[] = {
+ VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+ {.name = "checkpointname",
+ .type = VSH_OT_DATA,
+ .flags = VSH_OFLAG_REQ,
+ .help = N_("checkpoint name"),
+ .completer = virshCheckpointNameCompleter,
+ },
+ {.name = "security-info",
+ .type = VSH_OT_BOOL,
+ .help = N_("include security sensitive information in XML dump")
+ },
+ {.name = "no-domain",
+ .type = VSH_OT_BOOL,
+ .help = N_("exclude <domain> from XML")
+ },
+ {.name = "size",
+ .type = VSH_OT_BOOL,
+ .help = N_("include backup size estimate in XML dump")
+ },
+ {.name = NULL}
+};
+
+static bool
+cmdCheckpointDumpXML(vshControl *ctl,
+ const vshCmd *cmd)
+{
+ virDomainPtr dom = NULL;
+ bool ret = false;
+ const char *name = NULL;
+ virDomainCheckpointPtr checkpoint = NULL;
+ char *xml = NULL;
+ unsigned int flags = 0;
+
+ if (vshCommandOptBool(cmd, "security-info"))
+ flags |= VIR_DOMAIN_CHECKPOINT_XML_SECURE;
+ if (vshCommandOptBool(cmd, "no-domain"))
+ flags |= VIR_DOMAIN_CHECKPOINT_XML_NO_DOMAIN;
+ if (vshCommandOptBool(cmd, "size"))
+ flags |= VIR_DOMAIN_CHECKPOINT_XML_SIZE;
+
+ if (vshCommandOptStringReq(ctl, cmd, "checkpointname", &name) < 0)
+ return false;
+
+ if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
+ return false;
+
+ if (!(checkpoint = virDomainCheckpointLookupByName(dom, name, 0)))
+ goto cleanup;
+
+ if (!(xml = virDomainCheckpointGetXMLDesc(checkpoint, flags)))
+ goto cleanup;
+
+ vshPrint(ctl, "%s", xml);
+ ret = true;
+
+ cleanup:
+ VIR_FREE(xml);
+ virshDomainCheckpointFree(checkpoint);
+ virshDomainFree(dom);
+
+ return ret;
+}
+
+
+/*
+ * "checkpoint-parent" command
+ */
+static const vshCmdInfo info_checkpoint_parent[] = {
+ {.name = "help",
+ .data = N_("Get the name of the parent of a checkpoint")
+ },
+ {.name = "desc",
+ .data = N_("Extract the checkpoint's parent, if any")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_checkpoint_parent[] = {
+ VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+ {.name = "checkpointname",
+ .type = VSH_OT_STRING,
+ .help = N_("find parent of checkpoint name"),
+ .completer = virshCheckpointNameCompleter,
+ },
+ VIRSH_COMMON_OPT_CURRENT(N_("find parent of current checkpoint")),
+ {.name = NULL}
+};
+
+static bool
+cmdCheckpointParent(vshControl *ctl,
+ const vshCmd *cmd)
+{
+ virDomainPtr dom = NULL;
+ bool ret = false;
+ const char *name = NULL;
+ virDomainCheckpointPtr checkpoint = NULL;
+ char *parent = NULL;
+
+ dom = virshCommandOptDomain(ctl, cmd, NULL);
+ if (dom == NULL)
+ goto cleanup;
+
+ if (virshLookupCheckpoint(ctl, cmd, "checkpointname", true, dom,
+ &checkpoint, &name) < 0)
+ goto cleanup;
+
+ if (virshGetCheckpointParent(ctl, checkpoint, &parent) < 0)
+ goto cleanup;
+ if (!parent) {
+ vshError(ctl, _("checkpoint '%s' has no parent"), name);
+ goto cleanup;
+ }
+
+ vshPrint(ctl, "%s", parent);
+
+ ret = true;
+
+ cleanup:
+ VIR_FREE(parent);
+ virshDomainCheckpointFree(checkpoint);
+ virshDomainFree(dom);
+
+ return ret;
+}
+
+
+/*
+ * "checkpoint-delete" command
+ */
+static const vshCmdInfo info_checkpoint_delete[] = {
+ {.name = "help",
+ .data = N_("Delete a domain checkpoint")
+ },
+ {.name = "desc",
+ .data = N_("Checkpoint Delete")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_checkpoint_delete[] = {
+ VIRSH_COMMON_OPT_DOMAIN_FULL(0),
+ {.name = "checkpointname",
+ .type = VSH_OT_STRING,
+ .help = N_("checkpoint name"),
+ .completer = virshCheckpointNameCompleter,
+ },
+ VIRSH_COMMON_OPT_CURRENT(N_("delete current checkpoint")),
+ {.name = "children",
+ .type = VSH_OT_BOOL,
+ .help = N_("delete checkpoint and all children")
+ },
+ {.name = "children-only",
+ .type = VSH_OT_BOOL,
+ .help = N_("delete children but not checkpoint")
+ },
+ {.name = "metadata",
+ .type = VSH_OT_BOOL,
+ .help = N_("delete only libvirt metadata, leaving checkpoint contents
behind")
+ },
+ {.name = NULL}
+};
+
+static bool
+cmdCheckpointDelete(vshControl *ctl,
+ const vshCmd *cmd)
+{
+ virDomainPtr dom = NULL;
+ bool ret = false;
+ const char *name = NULL;
+ virDomainCheckpointPtr checkpoint = NULL;
+ unsigned int flags = 0;
+
+ dom = virshCommandOptDomain(ctl, cmd, NULL);
+ if (dom == NULL)
+ goto cleanup;
+
+ if (virshLookupCheckpoint(ctl, cmd, "checkpointname", true, dom,
+ &checkpoint, &name) < 0)
+ goto cleanup;
+
+ if (vshCommandOptBool(cmd, "children"))
+ flags |= VIR_DOMAIN_CHECKPOINT_DELETE_CHILDREN;
+ if (vshCommandOptBool(cmd, "children-only"))
+ flags |= VIR_DOMAIN_CHECKPOINT_DELETE_CHILDREN_ONLY;
+ if (vshCommandOptBool(cmd, "metadata"))
+ flags |= VIR_DOMAIN_CHECKPOINT_DELETE_METADATA_ONLY;
+
+ if (virDomainCheckpointDelete(checkpoint, flags) == 0) {
+ if (flags & VIR_DOMAIN_CHECKPOINT_DELETE_CHILDREN_ONLY)
+ vshPrintExtra(ctl, _("Domain checkpoint %s children deleted\n"),
name);
+ else
+ vshPrintExtra(ctl, _("Domain checkpoint %s deleted\n"), name);
+ } else {
+ vshError(ctl, _("Failed to delete checkpoint %s"), name);
+ goto cleanup;
+ }
+
+ ret = true;
+
+ cleanup:
+ virshDomainCheckpointFree(checkpoint);
+ virshDomainFree(dom);
+
+ return ret;
+}
+
+
+const vshCmdDef checkpointCmds[] = {
+ {.name = "checkpoint-create",
+ .handler = cmdCheckpointCreate,
+ .opts = opts_checkpoint_create,
+ .info = info_checkpoint_create,
+ .flags = 0
+ },
+ {.name = "checkpoint-create-as",
+ .handler = cmdCheckpointCreateAs,
+ .opts = opts_checkpoint_create_as,
+ .info = info_checkpoint_create_as,
+ .flags = 0
+ },
+ {.name = "checkpoint-current",
+ .handler = cmdCheckpointCurrent,
+ .opts = opts_checkpoint_current,
+ .info = info_checkpoint_current,
+ .flags = 0
+ },
+ {.name = "checkpoint-delete",
+ .handler = cmdCheckpointDelete,
+ .opts = opts_checkpoint_delete,
+ .info = info_checkpoint_delete,
+ .flags = 0
+ },
+ {.name = "checkpoint-dumpxml",
+ .handler = cmdCheckpointDumpXML,
+ .opts = opts_checkpoint_dumpxml,
+ .info = info_checkpoint_dumpxml,
+ .flags = 0
+ },
+ {.name = "checkpoint-edit",
+ .handler = cmdCheckpointEdit,
+ .opts = opts_checkpoint_edit,
+ .info = info_checkpoint_edit,
+ .flags = 0
+ },
+ {.name = "checkpoint-info",
+ .handler = cmdCheckpointInfo,
+ .opts = opts_checkpoint_info,
+ .info = info_checkpoint_info,
+ .flags = 0
+ },
+ {.name = "checkpoint-list",
+ .handler = cmdCheckpointList,
+ .opts = opts_checkpoint_list,
+ .info = info_checkpoint_list,
+ .flags = 0
+ },
+ {.name = "checkpoint-parent",
+ .handler = cmdCheckpointParent,
+ .opts = opts_checkpoint_parent,
+ .info = info_checkpoint_parent,
+ .flags = 0
+ },
+ {.name = NULL}
+};
diff --git a/tools/virsh-completer.c b/tools/virsh-completer.c
index c4adbb70d0..9c9836aadb 100644
--- a/tools/virsh-completer.c
+++ b/tools/virsh-completer.c
@@ -1,7 +1,7 @@
/*
* virsh-completer.c: virsh completer callbacks
*
- * Copyright (C) 2017 Red Hat, Inc.
+ * Copyright (C) 2017-2018 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -623,6 +623,56 @@ virshSecretUUIDCompleter(vshControl *ctl,
}
+char **
+virshCheckpointNameCompleter(vshControl *ctl,
+ const vshCmd *cmd,
+ unsigned int flags)
+{
+ virshControlPtr priv = ctl->privData;
+ virDomainPtr dom = NULL;
+ virDomainCheckpointPtr *checkpoints = NULL;
+ int ncheckpoints = 0;
+ size_t i = 0;
+ char **ret = NULL;
+
+ virCheckFlags(0, NULL);
+
+ if (!priv->conn || virConnectIsAlive(priv->conn) <= 0)
+ return NULL;
+
+ if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
+ return NULL;
+
+ if ((ncheckpoints = virDomainListCheckpoints(dom, &checkpoints, flags)) < 0)
+ goto error;
+
+ if (VIR_ALLOC_N(ret, ncheckpoints + 1) < 0)
+ goto error;
+
+ for (i = 0; i < ncheckpoints; i++) {
+ const char *name = virDomainCheckpointGetName(checkpoints[i]);
+
+ if (VIR_STRDUP(ret[i], name) < 0)
+ goto error;
+
+ virshDomainCheckpointFree(checkpoints[i]);
+ }
+ VIR_FREE(checkpoints);
+ virshDomainFree(dom);
+
+ return ret;
+
+ error:
+ for (; i < ncheckpoints; i++)
+ virshDomainCheckpointFree(checkpoints[i]);
+ VIR_FREE(checkpoints);
+ for (i = 0; i < ncheckpoints; i++)
+ VIR_FREE(ret[i]);
+ VIR_FREE(ret);
+ virshDomainFree(dom);
+ return NULL;
+}
+
char **
virshSnapshotNameCompleter(vshControl *ctl,
const vshCmd *cmd,
diff --git a/tools/virsh-domain-monitor.c b/tools/virsh-domain-monitor.c
index ad739a9df5..505aa84929 100644
--- a/tools/virsh-domain-monitor.c
+++ b/tools/virsh-domain-monitor.c
@@ -1,7 +1,7 @@
/*
* virsh-domain-monitor.c: Commands to monitor domain status
*
- * Copyright (C) 2005, 2007-2016 Red Hat, Inc.
+ * Copyright (C) 2005-2019 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -1614,6 +1614,7 @@ virshDomainListCollect(vshControl *ctl, unsigned int flags)
int autostart;
int state;
int nsnap;
+ int nchk;
int mansave;
virshControlPtr priv = ctl->privData;
@@ -1781,6 +1782,17 @@ virshDomainListCollect(vshControl *ctl, unsigned int flags)
goto remove_entry;
}
+ /* checkpoint filter */
+ if (VSH_MATCH(VIR_CONNECT_LIST_DOMAINS_FILTERS_CHECKPOINT)) {
+ if ((nchk = virDomainListCheckpoints(dom, NULL, 0)) < 0) {
+ vshError(ctl, "%s", _("Failed to get checkpoint
count"));
+ goto cleanup;
+ }
+ if (!((VSH_MATCH(VIR_CONNECT_LIST_DOMAINS_HAS_CHECKPOINT) && nchk
> 0) ||
+ (VSH_MATCH(VIR_CONNECT_LIST_DOMAINS_NO_CHECKPOINT) && nchk ==
0)))
+ goto remove_entry;
+ }
+
/* the domain matched all filters, it may stay */
continue;
@@ -1842,6 +1854,14 @@ static const vshCmdOptDef opts_list[] = {
.type = VSH_OT_BOOL,
.help = N_("list domains without a snapshot")
},
+ {.name = "with-checkpoint",
+ .type = VSH_OT_BOOL,
+ .help = N_("list domains with existing checkpoint")
+ },
+ {.name = "without-checkpoint",
+ .type = VSH_OT_BOOL,
+ .help = N_("list domains without a checkpoint")
+ },
{.name = "state-running",
.type = VSH_OT_BOOL,
.help = N_("list domains in running state")
@@ -1941,6 +1961,9 @@ cmdList(vshControl *ctl, const vshCmd *cmd)
FILTER("with-snapshot", VIR_CONNECT_LIST_DOMAINS_HAS_SNAPSHOT);
FILTER("without-snapshot", VIR_CONNECT_LIST_DOMAINS_NO_SNAPSHOT);
+ FILTER("with-checkpoint", VIR_CONNECT_LIST_DOMAINS_HAS_CHECKPOINT);
+ FILTER("without-checkpoint", VIR_CONNECT_LIST_DOMAINS_NO_CHECKPOINT);
+
FILTER("state-running", VIR_CONNECT_LIST_DOMAINS_RUNNING);
FILTER("state-paused", VIR_CONNECT_LIST_DOMAINS_PAUSED);
FILTER("state-shutoff", VIR_CONNECT_LIST_DOMAINS_SHUTOFF);
diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index ce4c6f1bad..23169f0569 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -3630,6 +3630,10 @@ static const vshCmdOptDef opts_undefine[] = {
.type = VSH_OT_BOOL,
.help = N_("remove all domain snapshot metadata, if inactive")
},
+ {.name = "checkpoints-metadata",
+ .type = VSH_OT_BOOL,
+ .help = N_("remove all domain checkpoint metadata, if inactive")
+ },
{.name = "nvram",
.type = VSH_OT_BOOL,
.help = N_("remove nvram file, if inactive")
@@ -3659,6 +3663,7 @@ cmdUndefine(vshControl *ctl, const vshCmd *cmd)
/* User-requested actions. */
bool managed_save = vshCommandOptBool(cmd, "managed-save");
bool snapshots_metadata = vshCommandOptBool(cmd, "snapshots-metadata");
+ bool checkpoints_metadata = vshCommandOptBool(cmd,
"checkpoints-metadata");
bool wipe_storage = vshCommandOptBool(cmd, "wipe-storage");
bool remove_all_storage = vshCommandOptBool(cmd, "remove-all-storage");
bool delete_snapshots = vshCommandOptBool(cmd, "delete-snapshots");
@@ -3667,6 +3672,7 @@ cmdUndefine(vshControl *ctl, const vshCmd *cmd)
/* Positive if these items exist. */
int has_managed_save = 0;
int has_snapshots_metadata = 0;
+ int has_checkpoints_metadata = 0;
int has_snapshots = 0;
/* True if undefine will not strand data, even on older servers. */
bool managed_save_safe = false;
@@ -3713,6 +3719,8 @@ cmdUndefine(vshControl *ctl, const vshCmd *cmd)
flags |= VIR_DOMAIN_UNDEFINE_SNAPSHOTS_METADATA;
snapshots_safe = true;
}
+ if (checkpoints_metadata)
+ flags |= VIR_DOMAIN_UNDEFINE_CHECKPOINTS_METADATA;
if (nvram)
flags |= VIR_DOMAIN_UNDEFINE_NVRAM;
if (keep_nvram)
@@ -3761,7 +3769,12 @@ cmdUndefine(vshControl *ctl, const vshCmd *cmd)
managed_save_safe = snapshots_safe = true;
}
}
+ has_checkpoints_metadata
+ = virDomainListCheckpoints(dom, NULL,
+ VIR_DOMAIN_CHECKPOINT_LIST_METADATA);
}
+ /* Clear flags which older servers might reject, if they would
+ * otherwise have no effect. */
if (!has_managed_save) {
flags &= ~VIR_DOMAIN_UNDEFINE_MANAGED_SAVE;
managed_save_safe = true;
@@ -3772,6 +3785,8 @@ cmdUndefine(vshControl *ctl, const vshCmd *cmd)
flags &= ~VIR_DOMAIN_UNDEFINE_SNAPSHOTS_METADATA;
snapshots_safe = true;
}
+ if (has_checkpoints_metadata == 0)
+ flags &= ~VIR_DOMAIN_UNDEFINE_CHECKPOINTS_METADATA;
/* Stash domain description for later use */
if (vol_string || remove_all_storage) {
@@ -10063,6 +10078,10 @@ static const vshCmdOptDef opts_dumpxml[] = {
.type = VSH_OT_BOOL,
.help = N_("include all domain snapshots in XML dump"),
},
+ {.name = "checkpoints",
+ .type = VSH_OT_BOOL,
+ .help = N_("include all domain checkpoints in XML dump"),
+ },
{.name = NULL}
};
@@ -10078,6 +10097,7 @@ cmdDumpXML(vshControl *ctl, const vshCmd *cmd)
bool update = vshCommandOptBool(cmd, "update-cpu");
bool migratable = vshCommandOptBool(cmd, "migratable");
bool snapshots = vshCommandOptBool(cmd, "snapshots");
+ bool checkpoints = vshCommandOptBool(cmd, "checkpoints");
if (inactive)
flags |= VIR_DOMAIN_XML_INACTIVE;
@@ -10089,6 +10109,8 @@ cmdDumpXML(vshControl *ctl, const vshCmd *cmd)
flags |= VIR_DOMAIN_XML_MIGRATABLE;
if (snapshots)
flags |= VIR_DOMAIN_XML_SNAPSHOTS;
+ if (checkpoints)
+ flags |= VIR_DOMAIN_XML_CHECKPOINTS;
if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
return false;
diff --git a/tools/virsh-util.c b/tools/virsh-util.c
index aa88397d61..933d1c825d 100644
--- a/tools/virsh-util.c
+++ b/tools/virsh-util.c
@@ -228,6 +228,17 @@ virshDomainFree(virDomainPtr dom)
}
+void
+virshDomainCheckpointFree(virDomainCheckpointPtr chk)
+{
+ if (!chk)
+ return;
+
+ vshSaveLibvirtHelperError();
+ virDomainCheckpointFree(chk); /* sc_prohibit_obj_free_apis_in_virsh */
+}
+
+
void
virshDomainSnapshotFree(virDomainSnapshotPtr snap)
{
diff --git a/tools/virsh.c b/tools/virsh.c
index b41304a888..0de41e33b8 100644
--- a/tools/virsh.c
+++ b/tools/virsh.c
@@ -50,6 +50,7 @@
#include "virstring.h"
#include "virgettext.h"
+#include "virsh-checkpoint.h"
#include "virsh-console.h"
#include "virsh-domain.h"
#include "virsh-domain-monitor.h"
@@ -832,6 +833,7 @@ static const vshCmdGrp cmdGroups[] = {
{VIRSH_CMD_GRP_DOM_MANAGEMENT, "domain", domManagementCmds},
{VIRSH_CMD_GRP_DOM_MONITORING, "monitor", domMonitoringCmds},
{VIRSH_CMD_GRP_HOST_AND_HV, "host", hostAndHypervisorCmds},
+ {VIRSH_CMD_GRP_CHECKPOINT, "checkpoint", checkpointCmds},
{VIRSH_CMD_GRP_IFACE, "interface", ifaceCmds},
{VIRSH_CMD_GRP_NWFILTER, "filter", nwfilterCmds},
{VIRSH_CMD_GRP_NETWORK, "network", networkCmds},
diff --git a/tools/virsh.pod b/tools/virsh.pod
index 4d548e94ca..d70f2ecd0c 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -407,6 +407,7 @@ Inject NMI to the guest.
[I<--with-managed-save>] [I<--without-managed-save>]
[I<--autostart>] [I<--no-autostart>]
[I<--with-snapshot>] [I<--without-snapshot>]
+ [I<--with-checkpoint>] [I<--without-checkpoint>]
[I<--state-running>] [I<--state-paused>]
[I<--state-shutoff>] [I<--state-other>]
@@ -512,6 +513,11 @@ this feature disabled use I<--no-autostart>.
Domains that have snapshot images can be listed using flag I<--with-snapshot>,
domains without a snapshot I<--without-snapshot>.
+=item B<Checkpoint existence>
+
+Domains that have checkpoints can be listed using flag I<--with-checkpoint>,
+domains without a checkpoint I<--without-checkpoint>.
+
=back
When talking to older servers, this command is forced to use a series of API
@@ -805,7 +811,8 @@ can be restarted later.
If I<domain> is transient, then the metadata of any snapshots will
be lost once the guest stops running, but the snapshot contents still
exist, and a new domain with the same name and UUID can restore the
-snapshot metadata with B<snapshot-create>.
+snapshot metadata with B<snapshot-create>. Similarly, the metadata of
+any checkpoints will be lost, but can be restored with B<checkpoint-create>.
If I<--graceful> is specified, don't resort to extreme measures
(e.g. SIGKILL) when the guest doesn't stop after a reasonable timeout;
@@ -1566,7 +1573,7 @@ Convert a domain Id (or UUID) to domain name
Rename a domain. This command changes current domain name to the new name
specified in the second argument.
-B<Note>: Domain must be inactive and without snapshots.
+B<Note>: Domain must be inactive and without snapshots or checkpoints.
=item B<domstate> I<domain> [I<--reason>]
@@ -1654,7 +1661,7 @@ is required in order to produce valid ELF file which can be later
processed by
the crash utility.
=item B<dumpxml> I<domain> [I<--inactive>] [I<--security-info>]
-[I<--update-cpu>] [I<--migratable>] [I<--snapshots>]
+[I<--update-cpu>] [I<--migratable>] [I<--snapshots>]
[I<--checkpoints>]
Output the domain information as an XML dump to stdout, this format can be used
by the B<create> command. Additional options affecting the XML dump may be
@@ -1667,8 +1674,9 @@ migrations, i.e., compatible with older libvirt releases and
possibly amended
with internal run-time options. This option may automatically enable other
options (I<--update-cpu>, I<--security-info>, ...) as necessary.
-Using I<--snapshots> will expand the output to also include information on
-all domain snapshots, for servers that understand the flag.
+Using I<--snapshots> or I<--checkpoints> will expand the output to also
+include information on all domain snapshots or checkpoints respectively,
+for servers that understand the flags.
=item B<edit> I<domain>
@@ -2804,10 +2812,11 @@ services must be shutdown in the domain.
The exact behavior of a domain when it shuts down is set by the
I<on_poweroff> parameter in the domain's XML definition.
-If I<domain> is transient, then the metadata of any snapshots will
-be lost once the guest stops running, but the snapshot contents still
-exist, and a new domain with the same name and UUID can restore the
-snapshot metadata with B<snapshot-create>.
+If I<domain> is transient, then the metadata of any snapshots and
+checkpoints will be lost once the guest stops running, but the underlying
+contents still exist, and a new domain with the same name and UUID can
+restore the snapshot metadata with B<snapshot-create>, and the checkpoint
+metadata with B<checkpoint-create>.
By default the hypervisor will try to pick a suitable shutdown
method. To specify an alternative method, the I<--mode> parameter
@@ -2884,7 +2893,7 @@ Output the device used for the TTY console of the domain. If the
information
is not available the processes will provide an exit code of 1.
=item B<undefine> I<domain> [I<--managed-save>]
[I<--snapshots-metadata>]
-[I<--nvram>] [I<--keep-nvram>]
+[I<--checkpoints-metadata>] [I<--nvram>] [I<--keep-nvram>]
[ {I<--storage> B<volumes> | I<--remove-all-storage>
[I<--delete-snapshots>]}
I<--wipe-storage>]
@@ -2902,6 +2911,12 @@ domain. Without the flag, attempts to undefine an inactive domain
with
snapshot metadata will fail. If the domain is active, this flag is
ignored.
+The I<--checkpoints-metadata> flag guarantees that any checkpoints (see the
+B<checkpoint-list> command) are also cleaned up when undefining an inactive
+domain. Without the flag, attempts to undefine an inactive domain with
+checkpoint metadata will fail. If the domain is active, this flag is
+ignored.
+
I<--nvram> and I<--keep-nvram> specify accordingly to delete or keep nvram
(/domain/os/nvram/) file. If the domain has an nvram file and the flags are
omitted, the undefine will fail.
@@ -4854,6 +4869,211 @@ the data contents from that point in time.
=back
+=head1 CHECKPOINT COMMANDS
+
+The following commands manipulate domain checkpoints. Checkpoints serve as
+a point in time to identify which portions of a guest's disks have changed
+after that time, making it possible to perform incremental and differential
+backups. Checkpoints are identified with a unique name. See
+L<https://libvirt.org/formatcheckpoint.html> for documentation of the XML
+format used to represent properties of checkpoints.
+
+=over 4
+
+=item B<checkpoint-create> I<domain> [I<xmlfile>]
{[I<--redefine>
+{[I<--current>] | [I<--redefine-list>]}] | [I<--no-metadata>]
[I<--quiesce>]}
+
+Create a checkpoint for domain I<domain> with the properties specified
+in I<xmlfile> describing a <domaincheckpoint> top-level element. If
+I<xmlfile> is completely omitted, then libvirt will create a
+checkpoint with a name based on the current time. The new checkpoint
+will become current, as listed by B<checkpoint-current>.
+
+If I<--redefine> is specified, then all XML elements produced by
+B<checkpoint-dumpxml> are valid; this can be used to migrate
+checkpoint hierarchy from one machine to another, to recreate
+hierarchy for the case of a transient domain that goes away and is
+later recreated with the same name and UUID, or to make slight
+alterations in the checkpoint metadata (such as host-specific aspects
+of the domain XML embedded in the checkpoint). When this flag is
+supplied, the I<xmlfile> argument is mandatory, and the domain's
+current snapshot will not be altered unless the I<--current> flag is
+also given. If I<--redefine-list> is specified, I<--redefine> is
+implied, I<--current> is rejected, and the XML changes from being a
+single <domaincheckpoint> to instead being a <checkpoints> element
+describing a list of checkpoints. List form only works if the domain
+has no currently-defined checkpoint metadata, and can be obtained as a
+subset of I<dumpxml --checkpoints> output.
+
+If I<--no-metadata> is specified, then the checkpoint data is created,
+but any metadata is immediately discarded (that is, libvirt does not
+treat the checkpoint as current, and cannot use the checkpoint for an
+incremental backup unless I<--redefine> is later used to teach libvirt
+about the metadata again).
+
+If I<--quiesce> is specified, libvirt will try to use guest agent
+to freeze and unfreeze domain's mounted file systems. However,
+if domain has no guest agent, checkpoint creation will fail.
+
+Existence of checkpoint metadata will prevent attempts to B<undefine>
+a persistent domain. However, for transient domains, checkpoint
+metadata is silently lost when the domain quits running (whether
+by command such as B<destroy> or by internal guest action).
+
+=item B<checkpoint-create-as> I<domain> {[I<--print-xml>]
+| [I<--no-metadata>]} [I<name>] [I<description>] [I<--quiesce>]
+[I<--diskspec>] B<diskspec>]...
+
+Create a checkpoint for domain I<domain> with the given <name> and
+<description>; if either value is omitted, libvirt will choose a
+value. If I<--print-xml> is specified, then XML appropriate for
+I<checkpoint-create> is output, rather than actually creating a
+checkpoint.
+
+The I<--diskspec> option can be used to control which guest disks participate in
the checkpoint. This option can occur
+multiple times, according to the number of <disk> elements in the domain
+xml. Each <diskspec> is in the
+form B<disk[,checkpoint=type][,bitmap=name]>. A literal I<--diskspec> must
precede each B<diskspec> unless
+all three of I<domain>, I<name>, and I<description> are also present.
+For example, a diskspec of "vda,checkpoint=bitmap,bitmap=map1"
+results in the following XML:
+ <disk name='vda' checkpoint='bitmap' bitmap='map1'/>
+
+If I<--quiesce> is specified, libvirt will try to use guest agent
+to freeze and unfreeze domain's mounted file systems. However,
+if domain has no guest agent, checkpoint creation will fail.
+
+If I<--no-metadata> is specified, then the checkpoint data is created,
+but any metadata is immediately discarded (that is, libvirt does not
+treat the checkpoint as current, and cannot use the checkpoint for an
+incremental backup unless I<--redefine> is later used to teach libvirt
+about the metadata again).
+
+=item B<checkpoint-current> I<domain> {[I<--name>] |
[I<--security-info>]
+[I<--no-domain>] [I<--size>] | [I<checkpointname>]}
+
+Without I<checkpointname>, this will output the checkpoint XML for the
+domain's current checkpoint (if any). If I<--name> is specified,
+output just the current checkpoint name instead of the full xml.
+Otherwise, using I<--security-info> will also include security
+sensitive information in the XML, using I<--size> will add XML
+indicating roughly how much guest data has changed since the
+checkpoint was created, and using I<--no-domain> will omit the
+<domain> element from the output for a more compact view.
+
+With I<checkpointname>, this is a request to make the existing named
+checkpoint become the current checkpoint.
+
+=item B<checkpoint-edit> I<domain> [I<checkpointname>]
[I<--current>]
+{[I<--rename>] | [I<--clone>]}
+
+Edit the XML configuration file for I<checkpointname> of a domain. If
+both I<checkpointname> and I<--current> are specified, also force the
+edited checkpoint to become the current snapshot. If
+I<checkpointname> is omitted, then I<--current> must be supplied, to
+edit the current checkpoint.
+
+This is equivalent to:
+
+ virsh checkpoint-dumpxml dom name > checkpoint.xml
+ vi checkpoint.xml (or make changes with your other text editor)
+ virsh checkpoint-create dom checkpoint.xml --redefine [--current]
+
+except that it does some error checking.
+
+The editor used can be supplied by the C<$VISUAL> or C<$EDITOR> environment
+variables, and defaults to C<vi>.
+
+If I<--rename> is specified, then the edits can change the checkpoint
+name. If I<--clone> is specified, then changing the snapshot name
+will create a clone of the checkpoint metadata. If neither is
+specified, then the edits must not change the checkpoint name. Note
+that changing a checkpoint name must be done with care, since some
+drivers may require the original checkpoint name for actually
+accessing changes since a point in time.
+
+=item B<checkpoint-info> I<domain> {I<checkpoint> |
I<--current>}
+
+Output basic information about a named <checkpoint>, or the current
+checkpoint with I<--current>.
+
+=item B<checkpoint-list> I<domain> [I<--metadata>]
[I<--no-metadata>]
+[{I<--parent> | I<--roots> | [{I<--tree> | I<--name>}]}]
+[{[I<--from>] B<checkpoint> | I<--current>} [I<--descendants>]]
+[I<--leaves>] [I<--no-leaves>]
+
+List all of the available checkpoints for the given domain, defaulting
+to show columns for the checkpoint name and creation time.
+
+If I<--parent> is specified, add a column to the output table giving
+the name of the parent of each checkpoint. If I<--roots> is
+specified, the list will be filtered to just checkpoints that have no
+parents. If I<--tree> is specified, the output will be in a tree
+format, listing just checkpoint names. These three options are
+mutually exclusive. If I<--name> is specified only the checkpoint name
+is printed. This option is mutually exclusive with I<--tree>.
+
+If I<--from> is provided, filter the list to checkpoints which are
+children of the given B<checkpoint>; or if I<--current> is provided,
+start at the current checkpoint. When used in isolation or with
+I<--parent>, the list is limited to direct children unless
+I<--descendants> is also present. When used with I<--tree>, the use
+of I<--descendants> is implied. This option is not compatible with
+I<--roots>. Note that the starting point of I<--from> or I<--current>
+is not included in the list unless the I<--tree> option is also
+present.
+
+If I<--leaves> is specified, the list will be filtered to just
+checkpoints that have no children. Likewise, if I<--no-leaves> is
+specified, the list will be filtered to just checkpoints with
+children. (Note that omitting both options does no filtering, while
+providing both options will either produce the same list or error out
+depending on whether the server recognizes the flags). Filtering
+options are not compatible with I<--tree>.
+
+If I<--metadata> is specified, the list will be filtered to just
+checkpoints that involve libvirt metadata, and thus would prevent
+B<undefine> of a persistent domain, or be lost on B<destroy> of a
+transient domain. Likewise, if I<--no-metadata> is specified, the
+list will be filtered to just checkpoints that exist without the need
+for libvirt metadata.
+
+=item B<checkpoint-dumpxml> I<domain> I<snapshot>
[I<--security-info>]
+[I<--no-domain>] [I<--size>]
+
+Output the snapshot XML for the domain's checkpoint named
+I<checkpoint>. Using I<--security-info> will also include security
+sensitive information, using I<--size> will add XML indicating roughly
+how much guest data has changed since the checkpoint was created, and
+using I<--no-domain> will omit the <domain> element from the output
+for a more compact view. Use B<checkpoint-current> to easily access
+the XML of the current snapshot. To grab the XML for all checkpoints
+at once, use B<dumpxml --checkpoints>.
+
+=item B<checkpoint-parent> I<domain> {I<checkpoint> |
I<--current>}
+
+Output the name of the parent checkpoint, if any, for the given
+I<checkpoint>, or for the current checkpoint with I<--current>.
+
+=item B<checkpoint-delete> I<domain> {I<checkpoint> |
I<--current>}
+[I<--metadata>] [{I<--children> | I<--children-only>}]
+
+Delete the checkpoint for the domain named I<checkpoint>, or the
+current checkpoint with I<--current>. The record of which portions of
+the disk changed since the checkpoint are merged into the parent
+checkpoint (if any). If I<--children> is passed, then delete this
+checkpoint and any children of this checkpoint. If I<--children-only>
+is passed, then delete any children of this checkpoint, but leave this
+checkpoint intact. These two flags are mutually exclusive.
+
+If I<--metadata> is specified, then only delete the checkpoint
+metadata maintained by libvirt, while leaving the checkpoint contents
+intact for access by external tools; otherwise deleting a checkpoint
+also removes the ability to perform an incremental backup from that
+point in time.
+
+=back
+
=head1 NWFILTER COMMANDS
The following commands manipulate network filters. Network filters allow
--
2.20.1