Currently OCFS2 does not do data in the inode. That feature will
enable us to manage small files more efficiently.
Fabio Corazza wrote:
I'm getting the same here. 4GB used in reality but 8GB displayed by df.
This is a 100% more of space consumed despite the real usage of the file
system. Initially I addressed the problem to the actual cluster size and
block size (64k and 4k), since we have a LOT of directories and a LOT of
small files, but still the 100% of usage in respect of the real usage is
too much. The filesystem is being used by a web application which does a
lot of read/writes since it stores photos on users albums, and this will
cause huge SAN space problems in the future (when we will reach 600GB of
space this will require 1.2TB).
I've opened a ticket internally to reformat the filesystem with 4k of
cluster size and 2k of block size, but I think that this will not solve
completely the problem, seeing what the other users report to this
mailing list.
With GFS we never got those problems, but I wanted to get rid of it
since I wanted to get away from the RedHat cluster suite.
Being said this, we should probably discuss more about this issue.
Fabio
Matthew Flusche wrote:
I unmounted the file system from each node and ran the fsck.ocfs2 on it.
That cleaned up the orphan_dirs but I did not get my 17 GB of space
back. Any other suggestions? Am I going to have to
backup,format,restore to fix this?
-----Original Message-----
From: Sunil Mushran [mailto:[EMAIL PROTECTED]
Sent: Wednesday, September 20, 2006 2:31 PM
To: Matthew Flusche
Cc: Ocfs2-users@oss.oracle.com
Subject: Re: [Ocfs2-users] ocfs2 - disk usage inconsistencies
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:[EMAIL PROTECTED]
Sent: Wednesday, September 20, 2006 1:52 PM
To: Matthew Flusche
Cc: Ocfs2-users@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:[EMAIL PROTECTED]
Sent: Wednesday, September 20, 2006 12:32 PM
To: Matthew Flusche
Cc: Ocfs2-users@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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