Le 26/10/2012 12:03, Yann Dupont a écrit :
Le 25/10/2012 23:10, Dave Chinner a écrit :
I'll try now to reproduce this kind of behaviour on a verry little
volume (10 GB for exemple) so I can confirm or inform the given
scenario .
This is reproductible. Here is how to do it :
- Started a 3.6.2 kernel.
- I created a fresh lvm volume on localdisk of 20 GB.
- mkfs.xfs on it, with default options
- mounted with default options
- launch something that hammers this volume. I launched compilebench
0.6 on it
- wait some time to fill memory,buffers, and be sure your disks are
really busy. I waited some minutes after the initial 30 kernel unpacking
in compilebench
- hard reset the server (I'm using the Idrac of the server to generate a
power cycle)
- After some try, I finally had the impossibility to mount the xfs
volume, with the error reported in previous mails. So far this is normal .
xfs_logprint don't say much :
xfs_logprint:
data device: 0xfe02
log device: 0xfe02 daddr: 10485792 length: 20480
Header 0x7c wanted 0xfeedbabe
**********************************************************************
* ERROR: header cycle=124 block=5414 *
**********************************************************************
I tried xfs_logprint -c , it gaves a 22M file. You can grab it here :
http://filex.univ-nantes.fr/get?k=QnBXivz2J3LmzJ18uBV
- Rebooted 3.4.15
- xfs_logprint gives the exact same result that with 3.6.2 (diff tells
no differences)
but on 3.4.15, I can mount the volume without problem, log is replayed.
for information here is xfs_info of the volume :
here is xfs_info output
root@label5:/mnt/debug# xfs_info /mnt/tempo
meta-data=/dev/mapper/LocalDisk-crashdisk isize=256 agcount=8,
agsize=655360 blks
= sectsz=512 attr=2
data = bsize=4096 blocks=5242880, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
Does this helps you ?
Cheers,
--
Yann Dupont - Service IRTS, DSI Université de Nantes
Tel : 02.53.48.49.20 - Mail/Jabber : Yann.Dupont@xxxxxxxxxxxxxx
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