[PVE-User] Filesystem corruption on a VM?

[Luis G. Coralle]

Hi, I have a lot of VM ( debian 8 and debian 9 ) with 512 MB of RAM on PVE
4.4-24 version and have not problem.
Have you enough free space on the storage?
How much ram memory do you have on PVE?

El mié., 14 de nov. de 2018 a la(s) 14:41, Marco Gaiarin (gaio at sv.lnf.it)
escribió:

>
> I come back on this:
>
> > In a PVE 4.4 cluster i continue to get FS errors like:
> >  Oct 22 20:51:10 vdmsv1 kernel: [268329.890910] EXT4-fs error (device
> sda6): ext4_mb_generate_buddy:758: group 932, block bitmap and bg
> descriptor inconsistent: 30722 vs 32768 free clusters
> > and
> >  Oct 23 09:43:16 vdmsv1 kernel: [314655.032561] EXT4-fs error (device
> sdb1): ext4_validate_block_bitmap:384: comm kworker/u8:2: bg 12: bad block
> bitmap checksum
> >  Oct 23 09:43:16 vdmsv1 kernel: [314655.034265] EXT4-fs (sdb1): Delayed
> block allocation failed for inode 2632026 at logical offset 2048 with max
> blocks 1640 with error 74
> >  Oct 23 09:43:16 vdmsv1 kernel: [314655.034335] EXT4-fs (sdb1): This
> should not happen!! Data will be lost
> > Host run 4.4.134-1-pve kernel, and guest is a debian stretch
> > (4.9.0-8-amd64), and in the same cluster, but also in other clusters, i
> > have other stretch VMs running in the same host kernel, without
> > troubles.
>
> > Googling around lead me to old jessie bugs (kernels 3.16):
> >       https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1423672
> >       https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=818502#22
>
> Seems the bug is really this. I've increased the RAM of the problematic
> VM, and FS corruption deasppeared.
>
>
> Effectively, all other VMs have plently of free ram, this was a bit
> full.
>
>
> I know that PVE 4.4 is EOL, but still i'm seeking feedback. For
> example, is a 'host' kernel bug, or a 'guest' kernel bug?
>
>
> Thanks.
>
> --
> dott. Marco Gaiarin                                     GNUPG Key ID:
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>
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-- 
Luis G. Coralle
Secretaría de TIC
Facultad de Informática
Universidad Nacional del Comahue
(+54) 299-4490300 Int 647