From: Sergi Seira <s.seira@cdmon.com>
To: xen-devel@lists.xensource.com
Subject: ext4_mb_generate_buddy remounting read-only on domU
Date: Wed, 30 Nov 2011 11:04:44 +0100 [thread overview]
Message-ID: <4ED5FFBC.3080605@cdmon.com> (raw)
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Hi,
has anyone had ext4 filesystem remounting hours after a live-migration?
We've been having those 'read only remounts' always hours after a live-migration.
The more load a domU has the faster we get 'read only remount'.
We are suspecting something is getting corrupted after a live migration, and under load an error bumps:
kernel: [3424760.190005] EXT4-fs error (device xvda3): ext4_mb_generate_buddy: EXT4-fs: group 55: 6102 blocks in bitmap, 6101 in gd
kernel: [3424760.190059] Aborting journal on device xvda3-8.
kernel: [3424760.191197] EXT4-fs (xvda3): Remounting filesystem read-only
kernel: [3424760.204396] EXT4-fs (xvda3): delayed block allocation failed for inode 374665 at logical offset 318 with max blocks 1 with error -30
kernel: [3424760.204447] This should not happen!! Data will be lost
kernel: [3424760.204483] EXT4-fs (xvda3): ext4_da_writepages: jbd2_start: 1015 pages, ino 374665; err -30
We have to fsck the volume from dom0 before re-creating domU.
Our system runs on :
dom0 debian6 2.6.32-5-xen-amd64
xen-hypervisor 4.0.1-2
DomU are:
domU paravirtual debian6 2.6.32-5-xen-amd64
3 iscsi volumes act as vxda's, swap, root and home (400G)
7 vcpus
8 GB RAM
Regards,
Sergi
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next reply other threads:[~2011-11-30 10:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-30 10:04 Sergi Seira [this message]
2011-12-12 16:37 ` ext4_mb_generate_buddy remounting read-only on domU Konrad Rzeszutek Wilk
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