[systemd-devel] systemd-udevd: excessive I/O usage

[Diego Calleja]

[resend, for some reason kmail formatted the previous message with html]

On Martes, 5 de junio de 2012 09:50:56 Alexander E. Patrakov escribió:
> Result: boot from ext4 takes less than 15 seconds, while boot from
> btrfs takes 9 minutes (or 5 minutes if I disable readahead - the data
> file is not valid anyway on btrfs).

I also had this problem. It turns out that btrfs was creating the 
space cache from scratch (which takes several minutes) on each boot,
for some reason. I added the space_cache mount option to fstab,
and now my system boots fast. I suggest trying it.