11:22 a.m.
From: Chen Hanxiao <chenhanxiao(a)gmail.com>
This patch introduces --all to show all block devices info
of guests like:
virsh # domblkinfo w08 --all
Target Capacity Allocation Physical
---------------------------------------------------
hda 42949672960 9878110208 9878110208
vda 10737418240 10736439296 10737418240
Signed-off-by: Chen Hanxiao <chenhanxiao(a)gmail.com>
---
tools/virsh-domain-monitor.c | 82 +++++++++++++++++++++++++++---------
tools/virsh.pod | 5 ++-
2 files changed, 67 insertions(+), 20 deletions(-)
diff --git a/tools/virsh-domain-monitor.c b/tools/virsh-domain-monitor.c
index 39cb2ce7f0..6a2dd72b45 100644
--- a/tools/virsh-domain-monitor.c
+++ b/tools/virsh-domain-monitor.c
@@ -390,7 +390,6 @@ static const vshCmdOptDef opts_domblkinfo[] = {
VIRSH_COMMON_OPT_DOMAIN_FULL(0),
{.name = "device",
.type = VSH_OT_DATA,
- .flags = VSH_OFLAG_REQ,
.completer = virshDomainDiskTargetCompleter,
.help = N_("block device")
},
@@ -398,6 +397,10 @@ static const vshCmdOptDef opts_domblkinfo[] = {
.type = VSH_OT_BOOL,
.help = N_("Human readable output")
},
+ {.name = "all",
+ .type = VSH_OT_BOOL,
+ .help = N_("display all block devices info")
+ },
{.name = NULL}
};
@@ -408,38 +411,79 @@ cmdDomblkinfo(vshControl *ctl, const vshCmd *cmd)
virDomainPtr dom;
bool ret = false;
bool human = false;
+ bool all = false;
const char *device = NULL;
+ xmlDocPtr xmldoc = NULL;
+ xmlXPathContextPtr ctxt = NULL;
+ int ndisks;
+ size_t i;
+ xmlNodePtr *disks = NULL;
+ char *target = NULL;
if (!(dom = virshCommandOptDomain(ctl, cmd, NULL)))
return false;
- if (vshCommandOptStringReq(ctl, cmd, "device", &device) < 0)
+ all = vshCommandOptBool(cmd, "all");
+ if (!all && vshCommandOptStringQuiet(ctl, cmd, "device",
&device) <= 0) {
+ vshError(ctl, "command 'domblkinfo' requires <device>
option");
goto cleanup;
+ }
- if (virDomainGetBlockInfo(dom, device, &info, 0) < 0)
- goto cleanup;
+ if (all) {
+ if (virshDomainGetXML(ctl, cmd, 0, &xmldoc, &ctxt) < 0)
+ goto cleanup;
- human = vshCommandOptBool(cmd, "human");
+ ndisks = virXPathNodeSet("./devices/disk", ctxt, &disks);
+ if (ndisks < 0)
+ goto cleanup;
- if (!human) {
- vshPrint(ctl, "%-15s %llu\n", _("Capacity:"),
info.capacity);
- vshPrint(ctl, "%-15s %llu\n", _("Allocation:"),
info.allocation);
- vshPrint(ctl, "%-15s %llu\n", _("Physical:"),
info.physical);
- } else {
- double val;
- const char *unit;
-
- val = vshPrettyCapacity(info.capacity, &unit);
- vshPrint(ctl, "%-15s %-.3lf %s\n", _("Capacity:"), val,
unit);
- val = vshPrettyCapacity(info.allocation, &unit);
- vshPrint(ctl, "%-15s %-.3lf %s\n", _("Allocation:"), val,
unit);
- val = vshPrettyCapacity(info.physical, &unit);
- vshPrint(ctl, "%-15s %-.3lf %s\n", _("Physical:"), val,
unit);
+ vshPrintExtra(ctl, "%-10s %-15s %-15s %-15s\n", _("Target"),
+ _("Capacity"), _("Allocation"),
_("Physical"));
+ vshPrintExtra(ctl, "-----------------------------"
+ "----------------------\n");
+
+ for (i = 0; i < ndisks; i++) {
+ ctxt->node = disks[i];
+ target = virXPathString("string(./target/@dev)", ctxt);
+
+ if (virDomainGetBlockInfo(dom, target, &info, 0) < 0)
+ goto cleanup;
+
+ vshPrint(ctl, "%-10s %-15llu %-15llu %-15llu\n", target,
+ info.capacity, info.allocation, info.physical);
+
+ VIR_FREE(target);
+ }
+ } else if (device) {
+ if (virDomainGetBlockInfo(dom, device, &info, 0) < 0)
+ goto cleanup;
+
+ human = vshCommandOptBool(cmd, "human");
+
+ if (!human) {
+ vshPrint(ctl, "%-15s %llu\n", _("Capacity:"),
info.capacity);
+ vshPrint(ctl, "%-15s %llu\n", _("Allocation:"),
info.allocation);
+ vshPrint(ctl, "%-15s %llu\n", _("Physical:"),
info.physical);
+ } else {
+ double val;
+ const char *unit;
+
+ val = vshPrettyCapacity(info.capacity, &unit);
+ vshPrint(ctl, "%-15s %-.3lf %s\n", _("Capacity:"), val,
unit);
+ val = vshPrettyCapacity(info.allocation, &unit);
+ vshPrint(ctl, "%-15s %-.3lf %s\n", _("Allocation:"), val,
unit);
+ val = vshPrettyCapacity(info.physical, &unit);
+ vshPrint(ctl, "%-15s %-.3lf %s\n", _("Physical:"), val,
unit);
+ }
}
ret = true;
cleanup:
+ VIR_FREE(target);
+ VIR_FREE(disks);
+ xmlXPathFreeContext(ctxt);
+ xmlFreeDoc(xmldoc);
virshDomainFree(dom);
return ret;
}
diff --git a/tools/virsh.pod b/tools/virsh.pod
index 3f3314a87e..584defa201 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -949,13 +949,16 @@ B<domstate> command says that a domain was paused due to I/O
error.
The B<domblkerror> command lists all block devices in error state and
the error seen on each of them.
-=item B<domblkinfo> I<domain> I<block-device> [I<--human>]
+=item B<domblkinfo> I<domain> { I<block-device> [I<--human>] }
[I<--all>]
Get block device size info for a domain. A I<block-device> corresponds
to a unique target name (<target dev='name'/>) or source file (<source
file='name'/>) for one of the disk devices attached to I<domain> (see
also B<domblklist> for listing these names). If I<--human> is set, the
output will have a human readable output.
+If I<--all> is set, the output will be a table showing all block devices
+size info associated with I<domain>.
+The I<--all> option takes precedence of the others.
=item B<domblklist> I<domain> [I<--inactive>] [I<--details>]
--
2.17.0