[script] Sequential ZFS scrub for cron

[morph027]

As i don't want to start scrubbing all pools in parallel, here's a small script that does start scrubbing for pools sequentially, which can be added to cron, e.g. cron.monthly

 

[maxprox]

Hello morph027,

just now I see your script, and that's exactly what I'm looking for.
As you write, I find, it is enough monthly and it should not overlap with the vzdump backups.
My two questions:
Where do I turn off the default scrubbing?
Is your script compatible with the latest two Proxmox versions 4 and 5?
Thank you for sharing your script.
regards,
maxprox

 

[morph027]

As it deals with ZFS only, it does work with all ZFS on Linux systems I'm still using it.

Should be in file /etc/cron.d/zfsutils-linux

 

[maxprox]

the answer for my first question I found:

 cat /etc/cron.d/zfsutils-linux
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin

# Scrub the second Sunday of every month.
24 0 8-14 * * root [ $(date +\%w) -eq 0 ] && [ -x /usr/lib/zfs-linux/scrub ] && /usr/lib/zfs-linux/scrub
root@fcprox:~#

EDIT: oh same time!