[Ocfs2-users] Different size with du and ls

[Sunil Mushran]

Email me the following info:

$ debugfs.ocfs2 -R "stats" /dev/sdX  <== replace with ocfs2 device

$ stat /mnt/user/small/11/11zzzzwa1.jpg
$ stat /data/user/small/11/11zzzzwa1.jpg


Markus Meyer wrote:
> Hi all,
>
> I stumbled over a curious thing. The Linux tools "df" and "du" aren't 
> working correctly on an OCFS2 filesystem. "df" shows approx. twice the 
> size as there is on the volume.
> Here how I found out about this issue:
>
> - same dir(a few files more in OCFS but the files are ca. 12 kB in 
> size), first on XFS  second on the OCFS volume
>
> # du -ms /mnt/user/small/kl/
> 439	/mnt/user/small/kl/
> # du -ms ~wkw/data/user/small/kl/
> 27	/web/wkw/data/user/small/kl/
>
> - file size on OCFS2
> # du -ks /mnt/user/small/11/11zzzzwa1.jpg
> 64	11zzzzwa1.jpg
> # ls -lh /mnt/user/small/11/11zzzzwa1.jpg
>   2,4K  11zzzzwa1.jpg
> - same file on XFS
> # ls -lh /data/user/small/11/11zzzzwa1.jpg
>   2,4K  /data/user/small/11/11zzzzwa1.jpg
>
> # md5sum ~wkw/data/user/small/11/11zzzzwa1.jpg
> d49c626360a37de9134ddc0ed31b1f59  /web/wkw/data/user/small/11/11zzzzwa1.jpg
> # md5sum /mnt/user/small/11/11zzzzwa1.jpg
> d49c626360a37de9134ddc0ed31b1f59  11zzzzwa1.jpg
>
> Following versions we use:
> Kernel: Vanilla Debian Kernel 2.6.25-2-amd64
> # modinfo ocfs2
> description:    OCFS2 1.5.0
> version:        1.5.0
> vermagic:       2.6.25-2-amd64 SMP mod_unload
> # dpkg -s ocfs2-tools | grep ^Vers
> Version: 1.2.4-1.2
>
> The OCFS2 has been created with "-T mail -N 2".
>
> Can anyone explain why there is this big difference between "du" and 
> "ls"? Currently we can't rely on "df/du" to give us correct information 
> about the disk usage. Maybe this problem is with the "df" version so I 
> post the version number here too:
> # dpkg -s coreutils | grep ^Vers
> Version: 5.97-5.3
>
>
>
> Regards,
>
> 	Markus Meyer
>
>
> _______________________________________________
> Ocfs2-users mailing list
> Ocfs2-users at oss.oracle.com
> http://oss.oracle.com/mailman/listinfo/ocfs2-users
>