11-03-2014
Snapshot revert fails in my KVM setup
Hi All,
I am trying to revert a snapshot and I am getting the below error message in my KVM setup (RHEL6.5). Reverting to a snapshot is failing.
Quote:
#virsh snapshot-revert TestImg Deployed-Stage --force
error: An error occurred, but the cause is unknown
I used the below command to create the snapshot.
Quote:
virsh snapshot-create-as TestImg Deployed-Stage --disk-only --atomic --no-metadata
Below is my snapshot list:
virsh snapshot-list TestImg –tree
Quote:
Deployed-Stage
|
+- Snapshot1
|
+- Snapshot2
Snapshot Info:
Quote:
virsh snapshot-info TestImg --snapshotname Deployed-Stage
Name: Deployed-Stage
Domain: TestImg
Current: no
State: shutoff
Location: external
Parent: -
Children: 1
Descendants: 2
Metadata: yes
Virsh version:
Quote:
virsh version
Compiled against library: libvirt 0.10.2
Using library: libvirt 0.10.2
Using API: QEMU 0.10.2
Running hypervisor: QEMU 0.12.1
libvirtd.log has below warning message
Quote:
2014-11-03 14:14:17.261+0000: 8025: warning : qemuDomainSnapshotForEachQcow2Raw:1723 : skipping snapshot action on vda
Please help me on this.
Thanks,
Kalpeer
Last edited by kalpeer; 11-03-2014 at 10:16 AM..
Reason: Update the text
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LEARN ABOUT SUNOS
lgrp_cookie_stale
lgrp_cookie_stale(3LGRP) Locality Group Library Functions lgrp_cookie_stale(3LGRP)
NAME
lgrp_cookie_stale - determine whether snapshot of lgroup hierarchy is stale
SYNOPSIS
cc [ flag ... ] file... -llgrp [ library ... ]
#include <sys/lgrp_user.h>
int lgrp_cookie_stale(lgrp_cookie_t cookie);
DESCRIPTION
The lgrp_cookie_stale() function takes a cookie representing the snapshot of the lgroup hierarchy obtained from lgrp_init(3LGRP) and
returns whether it is stale. The snapshot can become out-of-date for a number of reasons depending on its view. If the snapshot was taken
with LGRP_VIEW_OS, changes in the lgroup hierarchy from dynamic reconfiguration, CPU on/offline, or other conditions can cause the snapshot
to become out-of-date. A snapshot taken with LGRP_VIEW_CALLER can be affected by the caller's processor set binding and changes in its
processor set itself, as well as changes in the lgroup hierarchy.
If the snapshot needs to be updated, lgrp_fini(3LGRP) should be called with the old cookie and lgrp_init() should be called to obtain a new
snapshot.
RETURN VALUES
Upon successful completion, lgrp_cookie_stale() returns whether the cookie is stale. Otherwise, it returns -1 and sets errno to indicate
the error.
ERRORS
The lgrp_cookie_stale() function will fail if:
EINVAL The cookie is not valid.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
lgrp_init(3LGRP), lgrp_fini(3LGRP), lgrp_view(3LGRP), liblgrp(3LIB), attributes(5)
SunOS 5.10 16 Apr 2003 lgrp_cookie_stale(3LGRP)