[Ocfs2-users] ocfs2 - disk usage inconsistencies

Sunil Mushran Sunil.Mushran at oracle.com
Wed Sep 20 12:30:38 PDT 2006


Yes.

Matthew Flusche wrote:
> 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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