XFS feature request

[Seth Mos <knuffie@xxxxxxxxx>]

Hello,

Upon a filesystem error the XFS filesystem normally unmounts the fs and 
often takes the box along with it.

What I would like to see is XFS remounting the fs readonly upon error, or 
at least on the not so severe errors.

One of my remote boxen (200Km and a 1:30 drive at 160km/h) played this 
trick once because a one of the disks from the raid set dissapeared from 
underneath. The filesystem was intact and did not need to be repaired. The 
box just needed to be rebooted.

On another occasion the root fs of our database server had a duplicate 
inode error which was triggered by trying to xfsdump the root fs. If the 
root filesystem was remounted ro instead of unmounted the database server 
would have survived and we had a chance to stop everything and prevent 
dataloss since all the databases and log files and such live on another fs.

I think this is a good compromise instead of unmounting. It might be wise 
to make it a mount option if possible to not break existing behaviour. 
ext2/3 does this same way afaik.

cheers


--
Seth
It might just be your lucky day, if you only knew.