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virsh: Expose new virDomainFSFreeze and virDomainFSThaw API

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These are exposed under domfsfreeze command and domfsthaw command.

Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama@hds.com>
This commit is contained in:
Tomoki Sekiyama 2014-05-01 20:06:13 -04:00 committed by Eric Blake
parent 4acccdf13c
commit 061c6347e4
2 changed files with 149 additions and 0 deletions
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126
tools/virsh-domain.c
View File

@ -11397,6 +11397,120 @@ 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 = "mountpoint",
.type = VSH_OT_ARGV,
.help = N_("mountpoint path to be frozen")
},
{.name = NULL}
};
static bool
cmdDomFSFreeze(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom = NULL;
int ret = -1;
const vshCmdOpt *opt = NULL;
const char **mountpoints = NULL;
size_t nmountpoints = 0;
if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
return false;
while ((opt = vshCommandOptArgv(cmd, opt))) {
if (VIR_EXPAND_N(mountpoints, nmountpoints, 1) < 0) {
vshError(ctl, _("%s: %d: failed to allocate mountpoints"),
__FILE__, __LINE__);
goto cleanup;
}
mountpoints[nmountpoints-1] = opt->data;
}
ret = virDomainFSFreeze(dom, mountpoints, nmountpoints, 0);
if (ret < 0) {
vshError(ctl, _("Unable to freeze filesystems"));
goto cleanup;
}
vshPrint(ctl, _("Froze %d filesystem(s)\n"), ret);
cleanup:
VIR_FREE(mountpoints);
virDomainFree(dom);
return ret >= 0;
}
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 = "mountpoint",
.type = VSH_OT_ARGV,
.help = N_("mountpoint path to be thawed")
},
{.name = NULL}
};
static bool
cmdDomFSThaw(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom = NULL;
int ret = -1;
const vshCmdOpt *opt = NULL;
const char **mountpoints = NULL;
size_t nmountpoints = 0;
if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
return false;
while ((opt = vshCommandOptArgv(cmd, opt))) {
if (VIR_EXPAND_N(mountpoints, nmountpoints, 1) < 0) {
vshError(ctl, _("%s: %d: failed to allocate mountpoints"),
__FILE__, __LINE__);
goto cleanup;
}
mountpoints[nmountpoints-1] = opt->data;
}
ret = virDomainFSThaw(dom, mountpoints, nmountpoints, 0);
if (ret < 0) {
vshError(ctl, _("Unable to thaw filesystems"));
goto cleanup;
}
vshPrint(ctl, _("Thawed %d filesystem(s)\n"), ret);
cleanup:
VIR_FREE(mountpoints);
virDomainFree(dom);
return ret >= 0;
}
const vshCmdDef domManagementCmds[] = {
{.name = "attach-device",
.handler = cmdAttachDevice,
@ -11544,6 +11658,18 @@ 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,

23
tools/virsh.pod
View File

@ -941,6 +941,29 @@ 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> [[I<--mountpoint>] B<mountpoint>...]
Freeze mounted filesystems within a running domain to prepare for consistent
snapshots.
The I<--mountpoint> option takes a parameter B<mountpoint>, which is a
mount point path of the filesystem to be frozen. This option can occur
multiple times. If this is not specified, every mounted filesystem is frozen.
Note: 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.
=item B<domfsthaw> I<domain> [[I<--mountpoint>] B<mountpoint>...]
Thaw mounted filesystems within a running domain, which have been frozen by
domfsfreeze command.
The I<--mountpoint> option takes a parameter B<mountpoint>, which is a
mount point path of the filesystem to be thawed. This option can occur
multiple times. If this is not specified, every mounted filesystem is thawed.
=item B<domfstrim> I<domain> [I<--minimum> B<bytes>]
[I<--mountpoint mountPoint>]