[Ocfs2-users] ocfs2 - disk usage inconsistencies

[Matthew Flusche]

When I stat the only file listed in //orphan_dir:0002 it shows 0
clusters.  There are only directories listed in //orphan_dir:0000 and
none of the directories have contents.  So my next courses of action
(since I don't know what has these unlinked files opened) would be to
stop every process accessing this file system?  Possibly umount/mount
the file system? would fsck.ocfs2 clean this up?

-----Original Message-----
From: Sunil Mushran [mailto:Sunil.Mushran at oracle.com] 
Sent: Wednesday, September 20, 2006 1:52 PM
To: Matthew Flusche
Cc: Ocfs2-users at oss.oracle.com
Subject: Re: [Ocfs2-users] ocfs2 - disk usage inconsistencies

Another node or that node itself.

As far as the filesize goes, "ls -l" does not give the ondisk size.
Do "stat <inodenum>" on the unlinked files and see the "Clusters".

Matthew Flusche wrote:
> There has been a lot of file system activity recently.
>
> I have files in orphan_dir:0000 and orphan_dir:0002.  But that doesn't
> seem to account for the 17 GB missing.  The truncate logs seem clean.
> So having files in orphan_dir:0000 is telling me that the node in slot
0
> deleted files and another node(s) still has the file open, correct?
>
> Matt
>
> debugfs: ls -l //orphan_dir:0000
>         16              drwxr-xr-x  13     0     0          774144
> 10-Sep-2006 00:08 .
>         10              drwxr-xr-x   6     0     0            4096
> 2-May-2006 16:11 ..
>         3052182         drwxrwxrwx   0   501   500            4096
> 19-Jul-2006 17:50 00000000002e9296
>         8234094         drwxrwxrwx   0   501   500            4096
> 19-Jul-2006 17:50 00000000007da46e
>         13063783        drwxrwxrwx   0   501   500            4096
> 19-Jul-2006 17:50 0000000000c75667
>         7869995         drwxrwxrwx   0   501   500            4096
> 22-Aug-2006 13:27 000000000078162b
>         3741473         drwxrwxrwx   0   501   500            4096
> 22-Aug-2006 13:29 0000000000391721
>         3351057         drwxrwxrwx   0   501   500            4096
> 19-Jul-2006 17:50 0000000000332211
>         7842503         drwxrwxrwx   0   501   500            4096
> 19-Jul-2006 17:50 000000000077aac7
>         2056493         drwxrwxrwx   0   501   500            4096
> 5-Sep-2006 08:53 00000000001f612d
>         7861894         drwxrwxrwx   0   501   500            4096
> 5-Sep-2006 08:53 000000000077f686
>         1487817         drwxrwxrwx   0   501   500            4096
> 5-Sep-2006 08:53 000000000016b3c9
>         1702439         drwxrwxrwx   0   501   500            4096
> 5-Sep-2006 08:53 000000000019fa27
>
> debugfs: ls -l //orphan_dir:0002
>         18              drwxr-xr-x   2     0     0           94208
> 5-Jul-2006 17:13 .
>         10              drwxr-xr-x   6     0     0            4096
> 2-May-2006 16:11 ..
>         4301446         -rw-r--r--   0   503   500               0
> 12-Aug-2006 10:40 000000000041a286
>
> -----Original Message-----
> From: Sunil Mushran [mailto:Sunil.Mushran at oracle.com] 
> Sent: Wednesday, September 20, 2006 12:32 PM
> To: Matthew Flusche
> Cc: Ocfs2-users at oss.oracle.com
> Subject: Re: [Ocfs2-users] ocfs2 - disk usage inconsistencies
>
> Did you remove some large files recently? If so, check the orphan_dir
> and truncate_log for all the slots.
>
> 1. Start debugfs:
> # debugfs.ocfs2 /dev/sdX
>
> 2. List system directory:
>  > ls -l //
>
> 3. List files in all orphan_dir(s):
>  > ls -l //orphan_dir:0000
>
> If there are files, means some process in the cluster is still using 
> that file.
>
> 4. stat all trancate_log(s):
>  > stat //truncate_log:0000
>
> I will be surprised if you see any bits here. If there are, do 
> "sync;sync;sync;" on the
> appropriate node.
>
> 5. You can find the appropriate node by dumping the slotmap:
>  > slotmap
> Find the slot-to-nodenum mapping. Do the sync on that node.
>
> For this and more, refer to the on-disk format support guide.
>
http://oss.oracle.com/projects/ocfs2/dist/documentation/03-disk_format.p
> df
>
> Matthew Flusche wrote:
>   
>> Hi all.
>>
>> I have a 50 GB OCFS2 file system. I'm currently using ~26GB of space 
>> but df is reporting 43 GB used. Any ideas how to find out where the 
>> missing 17GB is at?
>>
>> The file system was formatted with a 16K cluster & 4K block size.
>>
>> Thanks,
>>
>> Matt
>>
>>
>>     
>
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