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hw/9pfs: use migration blockers to prevent live migration when virtfs export path is mounted

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Now when you try to migrate with VirtFS export path mounted, you get a proper QMP error:

(qemu) migrate tcp:localhost:4444
Migration is disabled when VirtFS export path '/tmp/' is mounted in the guest using mount_tag 'v_tmp'
(qemu)

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
This commit is contained in:
Aneesh Kumar K.V
2011-12-04 22:35:28 +05:30
committed by Justin M. Forbes
parent f03969b952
commit 77a0262181
5 changed files with 41 additions and 13 deletions
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5
qerror.c
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@ -234,6 +234,11 @@ static const QErrorStringTable qerror_table[] = {
.desc = "'%(device)' uses a %(format) feature which is not "
"supported by this qemu version: %(feature)",
},
{
.error_fmt = QERR_VIRTFS_FEATURE_BLOCKS_MIGRATION,
.desc = "Migration is disabled when VirtFS export path '%(path)' "
"is mounted in the guest using mount_tag '%(tag)'",
},
{
.error_fmt = QERR_VNC_SERVER_FAILED,
.desc = "Could not start VNC server on %(target)",