Lustre discuss - May 2006 - /proc kbytesfree / kbytesavail

On Jul 19, 2005  09:19 +0200, Christoph Biardzki wrote:
> could someone explain the difference between "kbytesavail" and 
> "kbytesfree" in the /proc-filesystem? We sometimes seem to get a 
> "device full" message on a particular OST.
The "kbytesfree" number is the total amount of unused space in
the filesystem.  The "kbytesavail" only reports space that is
not already reserved by the clients for write cache.  It also
includes the default ext3 "5% reserved" space, see tune2fs man page
and https://bugzilla.lustre.org/show_bug.cgi?id=2378

Cheers, Andreas
--
Andreas Dilger
Principal Software Engineer
Cluster File Systems, Inc.

Hello,


could someone explain the difference between "kbytesavail" and=20
"kbytesfree" in the /proc-filesystem? We sometimes seem to get a=20
"device full" message on a particular OST.


Thanks!

  - Christoph




root@lx32s234:/proc/fs/lustre: cat obdfilter/OST_lx32s234/kbytesavail
3387552
root@lx32s234:/proc/fs/lustre: cat obdfilter/OST_lx32s234/kbytesfree
110680132
root@lx32s234:/proc/fs/lustre: cat obdfilter/OST_lx32s234/kbytestotal
2111616560


--=20
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