Linux, PHP, geeky stuff … boring man.
As root: (as a regular user it just won’t work) –
btrfs filesystem defragment /home -r
You probably want to run that weekly.
I eventually noticed Thunderbird and phpStorm were being really slow and laggy … at which point I realised the cron job I had (as my non-root user) wasn’t working.
(using filefrag /path/to/file you can see the change in the number of extents change after defragmenting)
Interestingly (well, perhaps not really) this is very easy.
In my case, I’m hoping that the migration will lead to faster fsck times (currently it’s taking about an hour, which is somewhat excessive, each time the server crashes for whatever reason).
In my case, the filesystem is /dev/md0 and mounted at /home – change the bits below as appropriate.
Continue reading “Migrating an ext3 filesystem to ext4 (Debian Squeeze)”