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Subject: XFS SB Validate error
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Date: Thu, 31 Jan 2002 20:45:12 -0500
Message-ID: <29800F5ABF5EAC42998190CFF1846AA303C8C6@symlab0-srvr1.SYMMETRY.SYMMSYS.COM>
Thread-Topic: XFS SB Validate error
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From: "Yom, Francis" <fyom@symmsys.com>
To: <linux-xfs@oss.sgi.com>
Cc: <lord@sgi.com>, <spstarr@sh0n.net>
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Hi all,

I am using Debian Woody on 2.4.17 that has the following patches:

ACPI 20011218
Preempt-Kernel - Robert Love
RMAP VM - rik van riel - RMAP12a
XFS patch for 2.4.17

The machine is a Compaq Presario Laptop with 1 Gb of RAM and 48 GB
Harddrive with 1.2 P3 processor.  I run VMWare Workstation 3.0 with
WinXP and Win2k Guest Os'es.

I have been very happy with XFS and had no problems with it so far.  I
have been using this kernel for 2 weeks now, but have been working with
XFS since 2.4.14.  Today, while working in my XP VMWare session, I got
an error saying that VMWare could not contact the disk drive.  I went to
an X console and checked my syslog and discovered that my /home
partition (3,9) was unmounted my XFS because of a bad superblock.  I had
the dreaded SB Validate problem as stated in the FAQ.

I ended up doing an xfs_repair after rebooting in single user mode.  I
could not get the log to replay so I ended up doing another xfs_repair
with the -L switch which made me very nervous.  Fortunately, my
partition was fixed and I lost no data.  Whew!  I think I was lucky.

I am posting this to see if anyone might know what could have caused
this and if my kernel's config could have been a culprit.  I only wish I
had more information like log info from the xfs_repair to post, but I
don't :-(  The only thing I was doing at the time was reading Outlook
mail from within the XP VMWare session.

If this happens again,  I will be sure to document this very carefully
to present next time.  I am just wondering if this scenario rings any
bells.  FWIW, I have found XFS to be extremely reliable.  It has saved
my ass a number of times when I have had to do cold reboots.

Many thanks,
Francis