[libvirt] [PATCH v4 5/5] virsh: Expose new virDomainFSFreeze and virDomainFSThaw API
These are exposed under domfsfreeze command and domfsthaw command.
Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama(a)hds.com>
---
tools/virsh-domain.c | 92 ++++++++++++++++++++++++++++++++++++++++++++++++++
tools/virsh.pod | 15 ++++++++
2 files changed, 107 insertions(+)
diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index d9aa4fa..b0cf68d 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -11391,6 +11391,86 @@ cmdDomFSTrim(vshControl *ctl, const vshCmd *cmd)
return ret;
}
+static const vshCmdInfo info_domfsfreeze[] = {
+ {.name = "help",
+ .data = N_("Freeze domain's mounted filesystems.")
+ },
+ {.name = "desc",
+ .data = N_("Freeze domain's mounted filesystems.")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_domfsfreeze[] = {
+ {.name = "domain",
+ .type = VSH_OT_DATA,
+ .flags = VSH_OFLAG_REQ,
+ .help = N_("domain name, id or uuid")
+ },
+ {.name = NULL}
+};
+static bool
+cmdDomFSFreeze(vshControl *ctl, const vshCmd *cmd)
+{
+ virDomainPtr dom = NULL;
+ bool ret = false;
+ unsigned int flags = 0;
+
+ if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
+ return ret;
+
+ if (virDomainFSFreeze(dom, flags) < 0) {
+ vshError(ctl, _("Unable to freeze filesystems"));
+ goto cleanup;
+ }
+
+ ret = true;
+
+ cleanup:
+ virDomainFree(dom);
+ return ret;
+}
+
+static const vshCmdInfo info_domfsthaw[] = {
+ {.name = "help",
+ .data = N_("Thaw domain's mounted filesystems.")
+ },
+ {.name = "desc",
+ .data = N_("Thaw domain's mounted filesystems.")
+ },
+ {.name = NULL}
+};
+
+static const vshCmdOptDef opts_domfsthaw[] = {
+ {.name = "domain",
+ .type = VSH_OT_DATA,
+ .flags = VSH_OFLAG_REQ,
+ .help = N_("domain name, id or uuid")
+ },
+ {.name = NULL}
+};
+static bool
+cmdDomFSThaw(vshControl *ctl, const vshCmd *cmd)
+{
+ virDomainPtr dom = NULL;
+ bool ret = false;
+ unsigned int flags = 0;
+
+ if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
+ return ret;
+
+ if (virDomainFSThaw(dom, flags) < 0) {
+ vshError(ctl, _("Unable to thaw filesystems"));
+ goto cleanup;
+ }
+
+ ret = true;
+
+ cleanup:
+ virDomainFree(dom);
+ return ret;
+}
+
const vshCmdDef domManagementCmds[] = {
{.name = "attach-device",
.handler = cmdAttachDevice,
@@ -11538,6 +11618,18 @@ const vshCmdDef domManagementCmds[] = {
.info = info_domdisplay,
.flags = 0
},
+ {.name = "domfsfreeze",
+ .handler = cmdDomFSFreeze,
+ .opts = opts_domfsfreeze,
+ .info = info_domfsfreeze,
+ .flags = 0
+ },
+ {.name = "domfsthaw",
+ .handler = cmdDomFSThaw,
+ .opts = opts_domfsthaw,
+ .info = info_domfsthaw,
+ .flags = 0
+ },
{.name = "domfstrim",
.handler = cmdDomFSTrim,
.opts = opts_domfstrim,
diff --git a/tools/virsh.pod b/tools/virsh.pod
index 20352cb..3f41f77 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -941,6 +941,21 @@ Output a URI which can be used to connect to the graphical display of
the
domain via VNC, SPICE or RDP. If I<--include-password> is specified, the
SPICE channel password will be included in the URI.
+=item B<domfsfreeze> I<domain>
+
+Freeze all mounted filesystems within a running domain to prepare for
+consistent snapshots.
+
+Note that B<snapshot-create> command has a I<--quiesce> option to freeze
+and thaw the filesystems automatically to keep snapshots consistent.
+B<domfsfreeze> command is only needed when a user wants to utilize the
+native snapshot features of storage devices not supported by libvirt yet.
+
+=item B<domfsthaw> I<domain>
+
+Thaw all mounted filesystems within a running domain, which are frozen
+by domfsfreeze command.
+
=item B<domfstrim> I<domain> [I<--minimum> B<bytes>]
[I<--mountpoint mountPoint>]