Re: 2.6.28.9: EXT3/NFS inodes corruption

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Hi,


On Wed, Jul 29, 2009 at 02:58:12PM +0200, Jan Kara wrote:
> On Tue 28-07-09 18:41:42, Sylvain Rochet wrote:
> > 
> > Lets move out the corrupted directory ;)
> > 
> > root@bazooka:/data/web/ed/90/48/walotux.walon.org/htdocs/tmp/cache/e# rm -- * .ok 
> > rm: cannot remove `spip%3Farticle19.f8740dca': Input/output error
> > root@bazooka:/data/web/ed/90/48/walotux.walon.org/htdocs/tmp/cache/e# cd ..
> > root@bazooka:/data/web/ed/90/48/walotux.walon.org/htdocs/tmp/cache# mv e/ /data/lost+found/wooops
> 
> Actually, leaving that file in the filesystem can potentially lead to
> strange effects because eventually the inode "spip%3Farticle19.f8740dca"
> points to gets reallocated and then you can get e.g. a hardlinked
> directory. On the other hand having it lost+found should be safe enough.

This happened a few times in the past, we saw corrupted dentries reappearing with 
a new file. New files with reference count set to 1 (but obviously should be 2 in 
this case). So the rule is "do not delete corrupted dentries anyway, keep them 
safe in lost+found and do not touch it" ;).


Sylvain

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