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virsh: selective block device migration

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Add `virsh migrate' option `--migrate-disks' that allows CLI user to
explicitly specify block devices to migrate.

Signed-off-by: Pavel Boldin <pboldin@mirantis.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Pavel Boldin 2015-06-16 01:42:11 +03:00 committed by Michal Privoznik
parent 93a19e283e
commit a4e92f9e14
2 changed files with 35 additions and 9 deletions
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23
tools/virsh-domain.c
View File

@ -9806,6 +9806,10 @@ static const vshCmdOptDef opts_migrate[] = {
.type = VSH_OT_STRING, .type = VSH_OT_STRING,
.help = N_("filename containing updated XML for the target") .help = N_("filename containing updated XML for the target")
}, },
{.name = "migrate-disks",
.type = VSH_OT_STRING,
.help = N_("comma separated list of disks to be migrated")
},
{.name = NULL} {.name = NULL}
}; };
@ -9865,6 +9869,25 @@ doMigrate(void *opaque)
VIR_MIGRATE_PARAM_DEST_NAME, opt) < 0) VIR_MIGRATE_PARAM_DEST_NAME, opt) < 0)
goto save_error; goto save_error;
if (vshCommandOptStringReq(ctl, cmd, "migrate-disks", &opt) < 0)
goto out;
if (opt) {
char **val = NULL;
val = virStringSplit(opt, ",", 0);
if (virTypedParamsAddStringList(&params,
&nparams,
&maxparams,
VIR_MIGRATE_PARAM_MIGRATE_DISKS,
(const char **)val) < 0) {
VIR_FREE(val);
goto save_error;
}
VIR_FREE(val);
}
if (vshCommandOptStringReq(ctl, cmd, "xml", &opt) < 0) if (vshCommandOptStringReq(ctl, cmd, "xml", &opt) < 0)
goto out; goto out;
if (opt) { if (opt) {

21
tools/virsh.pod
View File

@ -1521,6 +1521,7 @@ to the I<uri> namespace is displayed instead of being modified.
[I<--compressed>] [I<--abort-on-error>] [I<--auto-converge>] [I<--compressed>] [I<--abort-on-error>] [I<--auto-converge>]
I<domain> I<desturi> [I<migrateuri>] [I<graphicsuri>] [I<listen-address>] I<domain> I<desturi> [I<migrateuri>] [I<graphicsuri>] [I<listen-address>]
[I<dname>] [I<--timeout> B<seconds>] [I<--xml> B<file>] [I<dname>] [I<--timeout> B<seconds>] [I<--xml> B<file>]
[I<--migrate-disks> B<disk-list>]
Migrate domain to another host. Add I<--live> for live migration; <--p2p> Migrate domain to another host. Add I<--live> for live migration; <--p2p>
for peer-2-peer migration; I<--direct> for direct migration; or I<--tunnelled> for peer-2-peer migration; I<--direct> for direct migration; or I<--tunnelled>
@ -1536,15 +1537,17 @@ with incremental copy (same base image shared between source and destination).
In both cases the disk images have to exist on destination host, the In both cases the disk images have to exist on destination host, the
I<--copy-storage-...> options only tell libvirt to transfer data from the I<--copy-storage-...> options only tell libvirt to transfer data from the
images on source host to the images found at the same place on the destination images on source host to the images found at the same place on the destination
host. I<--change-protection> enforces that no incompatible configuration host. By default only non-shared non-readonly images are transferred. Use
changes will be made to the domain while the migration is underway; this flag I<--migrate-disks> to explicitly specify a list of disk targets to
is implicitly enabled when supported by the hypervisor, but can be explicitly transfer via the comma separated B<disk-list> argument. I<--change-protection>
used to reject the migration if the hypervisor lacks change protection enforces that no incompatible configuration changes will be made to the domain
support. I<--verbose> displays the progress of migration. I<--compressed> while the migration is underway; this flag is implicitly enabled when supported
activates compression of memory pages that have to be transferred repeatedly by the hypervisor, but can be explicitly used to reject the migration if the
during live migration. I<--abort-on-error> cancels the migration if a soft hypervisor lacks change protection support. I<--verbose> displays the progress
error (for example I/O error) happens during the migration. I<--auto-converge> of migration. I<--compressed> activates compression of memory pages that have
forces convergence during live migration. to be transferred repeatedly during live migration. I<--abort-on-error> cancels
the migration if a soft error (for example I/O error) happens during the
migration. I<--auto-converge> forces convergence during live migration.
B<Note>: Individual hypervisors usually do not support all possible types of B<Note>: Individual hypervisors usually do not support all possible types of
migration. For example, QEMU does not support direct migration. migration. For example, QEMU does not support direct migration.