[Bug 220084] [NEW] Xen with XFS causes crashes and truncated files/data loss

jafa jafa at silicondust.com
Mon Apr 21 02:02:57 UTC 2008

Public bug reported:

Binary package hint: linux-image-xen


We are running Gutsy on a Xen server (dom0 and domUs running Gutsy
installed via debootstrap).

All filesystems were XFS (dom0 root, n x domU root, bulk, and backup)

* A DomU would crash on average every two days.
* Complete machine would crash once to twice a week (co-located - required phone call and hard reset).
* Random files would often be truncated.
* Sometimes a critical library would be truncated causing a domU not to boot.
* Hourly mysql backup files created by dom0 would often be truncated.

Truncation - the file would still be there, but the size would be
shorter that expected (for example 25k rather than 120k, or 4MB rather
than 11MB).

When we noticed truncated backup files created by dom0 we started to
think it might be the filesystem....

We converted all filesystems to ext3 (dom0, n x domU, bulk, and backup).
Each conversion was done by created a new partition, formatting ext3,
then copying from the XFS partition (ie copy, not reinstall). No other
changes to the server.

That was 4 weeks ago. The machine has not crashed or needed a reboot
since the change to ext3.


** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New

Xen with XFS causes crashes and truncated files/data loss
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