Andrew Worsley wrote:
> Is there any tool that will unmount a filesystem and fsck say once
> every 2-3 months to avoid having the
> massive slow fsck on the reboot every 6-12 months?

Doing that only shifts the costly(timewise) fsck to a time of your 
choosing, but to do it(fsck) more often achieves no benefit at all.
Ext3/4 filesystems do not need defragmenting like FAT32 and friends, the 
fsck is only a consistency check, as incorrect shutdown procedures can 
cause filesystem inconsistencies.

> If not I am thinking of a cron job that tries to umount the filesystem
> in the middle of the night, run a basic fsck and if all goes well
> remounts it mailing the results to root.
>
> I have a modest root/usr partitions but the larger other partitions
> only used for recording TV take 30+ minutes to do the occasional fsck
> and that always is demanded sometimes very inconveniently on a reboot.

cheers

Robert
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