[Xen-users] Filesystem Errors on running Xen VM

[Frank Isemann <f.isemann@xxxxxxxxxxx>]

Hi guys :),

I've got strange Filesystem Errors on all running VM's.

Im using the 2.6.18-4-xen-amd64 debian Package for my Hostsytem, its 
using the xen-3.0.3-1 hypervisor.
My data-storage is based on LVM2 and a Software-Raid1 via MDADM

If i check the Root Filesystem via fsck.ext3 in a VM ( mounted system )
_or_ on the Hostsystem thru the LVM Device

i got this Errors:

---------
# fsck.ext3 -n -f -v <DISK>

Pass 5: Checking group summary information
Block bitmap differences:  -1524512 -1527940 -1529864 -1529884 
-(1529886--1529887) -1529891 -1529957 -1532281 -1532318 -1532334 
-1533045 +1558538 +1558540 +1560412 +1560475 +1560481 +1560627 +1560638 
+(1560682--1560684) +1560687 +1560689
Fix? no
Free blocks count wrong for group #46 (17, counted=5).
Fix? no
Free blocks count wrong for group #47 (0, counted=12).
Fix? no
Free blocks count wrong (1303087, counted=1302999).
Fix? no
Inode bitmap differences:  +755001 -755672
Fix? no
Free inodes count wrong (2532225, counted=2532218).
Fix? no

.... and more
---------
Some vServer users are reporting randomly losing Files on the Systems.

BUT if i shutdown the Server and the VM is Destroy'ed
-> The Filesystem ( checked with the LVM Device on the Hostsystem ) is 
completely CLEAN!
Any Ideas?



Greeting,
Frank





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