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xfs_repair in traversing filesystem

To: xfs@xxxxxxxxxxx
Subject: xfs_repair in traversing filesystem
From: Chris Walker <christopher.walker@xxxxxxxxx>
Date: Fri, 25 Feb 2011 10:23:06 -0500
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Hello,

Our 35TB XFS filesystem developed some problems and was throwing these:

Filesystem "dm-0": Access to block zero in inode 160564555
start_block: 0 start_off: 0 blkcnt: 0 extent-state: 0 lastx: 451b

so we're running xfs_repair on this filesystem.  It finds this inode
and everything looks good, but then it hangs at

Phase 6 - check inode connectivity...
        - resetting contents of realtime bitmap and summary inodes
        - traversing filesystem ...

previous posts suggest running

xfs_repair -P -o bhash=1024

is this still the best way around this problem?  We're using the
latest xfsprogs (3.1.4).

Thanks very much,
Chris

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