OptimumCache

[sahostking]

This will be an excellent tool to speed up our servers - if I can get it working!
Installed, then ran

optimumcache mark --recursive /home

but that just resulted in thousands of these errors:

optimumcache: Unable to set temporary attribute on /home/jakkalsk/public_html/wp-includes/fonts/dashicons.ttf: Operation not supported
optimumcache: Unable to set temporary attribute on /home/jakkalsk/public_html/wp-includes/fonts/dashicons.woff: Operation not supported
optimumcache: Unable to set temporary attribute on /home/jakkalsk/public_html/wp-includes/fonts/dashicons.svg: Operation not supported
optimumcache: Unable to set temporary attribute on /home/jakkalsk/public_html/wp-includes/fonts/dashicons.eot: Operation not supported
optimumcache: Failed to mark /home/jakkalsk/public_html/wp-includes/fonts: Operation not supported

I checked /var/cache/optimumcache and its empty

have I done something wrong, or is OptimumCache not ready for primetime yet?

[iseletsk]

Are you sure you are using ext4 and not ext3 for /home partition?

[steve]

Yes:

file -s /dev/sda3
/dev/sda3: Linux rev 1.0 ext4 filesystem data (needs journal recovery) (extents) (large files) (huge files)

[iseletsk]

If you could provide us with access to investigate (using helpdesk.cloudlinux.com) -- I would appreciate it. It is new software, so, I haven seen this issue on ext4 filesystem yet. Maybe some mount option prevents it from happening.

[steve]

Sure, Ill do that now. Thanks, Igor, Im really looking forward to getting this working.

[iseletsk]

The solution seems to be adding user_xattr to mount options list for partition. Most people don need it, but if you are getting same error, you might want to do it.

To do that, edit /etc/fstab, and add user_xattr to mount option list for that partition

Than, run:
mount /partition -o remount,user_xattr

This should produce no downtime, but be careful with fstab -> double check the spelling, etc...

[steve]

Thanks, that has fixed the problem.
How do we know that OptimumCache is working? Is there a way to monitor it?

[iseletsk]

optimumcache stat /home

will get you % of files cached.

[steve]

So this means that nothing is being cached (after 12 hours):

optimumcache stat /home
csums: 0 (0.0%)
fetched uncached cached
inodes: 259348 259348 0 (0.0%)
size: 17768278 17768278 0 (0.0%)
RAM: 11859280 11859280 0 (0.0%)

[info]

Same here:
after optimumcache mark --recursive /home
without errors, this is the situation:

optimumcache stat /home
csums: 0 (0.0%)
fetched uncached cached
inodes: 109050 109050 0 (0.0%)
size: 4140146 4140146 0 (0.0%)
RAM: 1046260 1046260 0 (0.0%)

[iseletsk]

We are looking into this. Something is not working right with the our setup.

[steve]

Igor, I have upd ated to the new version of Optimumcache, and on all servers, including the one where you added user_xattr to fstab, the same error appears:

optimumcache: Unable to se t temporary attribute on /home/flamboij/public_html/wp-content/uploads/2012/08/IMG_0778-400x500.jpg: Operation not supported

[marbman21]

Same here, I tried the new version an got the same errors. Also the /var/cache/optimumcache directory is still empty.

[bogdan.sh]

Looks like filesystem is not mounted with necessary options, you need to remount /home/ with "pfcache_csum,pfcache=/var/cache/optimumcache" options, something like:

mount -t ext4 -o remount,pfcache_csum,pfcache=/var/cache/optimumcache /dev/sda1

[accounts]

Am getting simular:
optimumcache: Unable to set temporary attribute on /home/quota.user: Operation not permitted

optimumcache: Unable to set temporary attribute on /home/username/mail/domain-name/firehorse/dovecot.index.log: Device or resource busy