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xfs_repair fails with corrupt dinode 17491441757, extent total = 1, nblo

To: xfs@xxxxxxxxxxx
Subject: xfs_repair fails with corrupt dinode 17491441757, extent total = 1, nblocks = 0. This is a bug.
From: Arkadiusz Miśkiewicz <arekm@xxxxxxxx>
Date: Mon, 31 Oct 2011 11:56:20 +0100
User-agent: KMail/1.13.7 (Linux/3.1.0-final-dirty; KDE/4.7.3; x86_64; ; )
xfs_repair version 3.1.6

disconnected inode 17491441754, moving to lost+found
disconnected inode 17491441755, moving to lost+found
disconnected inode 17491441756, moving to lost+found
disconnected inode 17491441757, moving to lost+found
corrupt dinode 17491441757, extent total = 1, nblocks = 0.  This is a bug.
Please capture the filesystem metadata with xfs_metadump and
report it to xfs@xxxxxxxxxxxx
cache_node_purge: refcount was 1, not zero (node=0x21450c90)

fatal error -- 117 - couldn't iget disconnected inode

30GB metadump image, 6.1GB compressed of ~7TB real partition
http://ixion.pld-linux.org/~arekm/lv_storage1.metadump.xz

You need ~8-12GB of memory for xfs_repair on this.

I can also provide ssh access to the system with this image and all needed 
stuff, so you don't need to download it or waste own resources.

In meantime I'll probably make ugly hack by making "couldn't iget disconnected 
inode" non fatal, so repair will be able to finish.
-- 
Arkadiusz Miśkiewicz        PLD/Linux Team
arekm / maven.pl            http://ftp.pld-linux.org/

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