Bug 37152

Summary:	file system become read only after live migration
Product:	Virtualization	Reporter:	Martin Chamberland (martin.chamberland)
Component:	kvm	Assignee:	virtualization_kvm
Status:	RESOLVED OBSOLETE
Severity:	normal
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	2.6.32-5-amd64	Subsystem:
Regression:	No	Bisected commit-id:

Description Martin Chamberland 2011-06-10 14:37:17 UTC

Dell T610
Intel Xeon 2.40ghz
kvm version 1:0.12.5+dfsg-5+squeeze2

Comment 1 Martin Chamberland 2011-06-10 15:38:04 UTC

after 10 minutes...

Jun 10 11:36:45 debian kernel: [ 1833.817530] end_request: I/O error, dev vda, sector 4176552
Jun 10 11:36:45 debian kernel: [ 1833.818019] Buffer I/O error on device dm-0, logical block 459301
Jun 10 11:36:45 debian kernel: [ 1833.818409] lost page write due to I/O error on dm-0
Jun 10 11:36:45 debian kernel: [ 1833.818432] JBD: Detected IO errors while flushing file data on dm-0

Comment 2 Martin Chamberland 2011-06-10 15:42:22 UTC

i forgot to tell that those log where grab from the guest machine.

server01$ sudo mount

mount: warning: /etc/mtab is not writable (e.g. read-only filesystem).
       It's possible that information reported by mount(8) is not
       up to date. For actual information about system mount points
       check the /proc/mounts file.

Comment 3 Martin Chamberland 2011-07-21 14:59:37 UTC

The problem was probably due because of the use of NFS in our setup.
I now use iSCSI to share LUN from both servers and everything seem to work perfectly !

thank's for helping, even if nobody even answer HERE  :-(