[Linux-cluster] gfs_fsck estimation

[Bob Peterson]

----- Original Message -----
| Hi,
| 
| I'm trying to find a method to estimate the time that gfs_fsck will
| take in a specific server. I have seen a lot of different results.
| Do you know of any method/procedure already written? If not, which
| variables should I consider to make an estimation?
| I'm thinking on considering:
| - filesystem size
| - number of Journals
| - CPU speed/number and memory capacity
| 
| Any thoughts?
| 
| Regards
| Matias Kreder

Hi Matias,

I don't think it's possible to estimate the run time of gfs_fsck.
If the file system is clean, it should be doable, but the problem is
that different kinds of corruption cause especially long delays,
and that corruption is unpredictable.

Another thing to be aware of: Starting with RHEL6.3, the fsck.gfs2
is now able to analyze and repair GFS1 file systems as well as GFS2,
and it is orders of magnitude faster. It's also much more accurate in
its analysis and more able to repair corruption that gfs_fsck would
just give up and throw away.

Regards,

Bob Peterson
Red Hat File Systems