[Ocfs2-users] Ghost files in OCFS2 filesystem

[Brian Kroth]

I didn't see this in the bug list.  Which mainline release is this fixed
in?

Thanks,
Brian

Sunil Mushran <sunil.mushran at oracle.com> 2009-08-20 17:46:
> Yes, this is a known issue in OCFS2 1.4.1 and 1.4.2. That is assuming
> no process in the cluster has that file open. We have the fix. It will be
> available with 1.4.3 which is in testing.
> 
> This was discussed in the email announcing the 1.4.2 release.
> ====================================================================
> http://oss.oracle.com/pipermail/ocfs2-announce/2009-June/000028.html
> 
> 1. Oracle# 7643059 - Orphan files not getting deleted
> When one unlinks a file, its inode is moved to the orphan directory and
> deleted when it is no longer in-use across the cluster. As part of the
> scheme, the node that unlinks the file, informs interested nodes of the
> same, asking the last node to stop using that inode to recover the space
> allocated to it. However, this scheme fails if memory pressure forces a
> node to forget to delete the inode on close.
> This issue was introduced in OCFS2 1.4.1. While we have fixed this issue,
> the fix did not make it into this release. Users running into this issue
> can call Oracle Support and ask for an interim release with this fix.
> ====================================================================
> 
> Workaround:
> If on 1.4.2, mount the fs on another node. Chances are it will delete
> the orphans. If not or if you are on 1.4.1, umount vol on all nodes and
> run fsck.ocfs2 -f.
> 
> You could ping support to get an interim fix. But we are close to releasing
> 1.4.3. So maybe better if you wait for that.
> 
> Sunil
> 
> 
> Shave, Chris wrote:
> > Hi,
> >  
> > I have encountered an issue on an Oracle RAC cluster using ocfs2, OS 
> > is RH Linux 5.3.
> >  
> > One of the ocfs2 filesystems appears to be 97% full, yet when I look 
> > at the files in there they only equal about 13gig (filesystems is 
> > 40gig in size).
> >  
> > I have seen this sort of thing in HP-UX but that involved a process 
> > who's output file was deleted but the process hadn't been stopped 
> > properly, once we killed the offending process the space was released, 
> > but I can't seem to find any process on this Linux server that is 
> > using or writing files to that filesystem.
> >  
> > File system:
> >  
> > Filesystem            Size  Used Avail Use% Mounted on
> > /dev/emcpoweri1        40G   39G  1.9G  96% /oraexport
> > File listing: Other than directories, these are the only files in that 
> > filesystem, nothing in lost+found either..
> >  
> > [root at aumel21db01cn01]# ll
> > total 11926784
> > -rw-rw---- 1 oracle oinstall 12210978816 Aug 21 05:23   
> > 00000.Full.090821.dmp
> > -rw-rw-r-- 1 oracle oinstall     1920327 Aug 21 05:23      
> > 00000.Full.090821.log
> > Any assistance with what is going on would be greatly appreciated.
> 
> 
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