[Ocfs2-users] Defragmenting OCFS2

[Werner Flamme]

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David [30.08.2011 17:18]:
> Ran into an issue last week were a 150GB OCFS2 partition would not allow 
> any further data to be written to it.  The issue was first discovered as 
> a result of a PHP web app alarming that it couldn't write files to 
> disk.  When the issue was investigated initial indications showed; via 
> `df -h`, that the partition still had 56GB of space left.  When an an 
> attempt to create a random file using dd was performed it ran into the 
> same issue.

Does `df -i` state that there are enough inodes free too? When the
Volume was created with big clusters, any file will occupy at least one
cluster, even if it is only 5 bytes in size.

tunefs.ocfs -Q "%B %T\n" /dev/$yours
should output the same number twice if many small files are stored on
the volume (man tunefs.ocfs). They will differ when you used an option
like "-T datafiles" when creating the filesystem (man mkfs.ocfs2).

Regards,
Werner
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