On Tue, 7 Feb 2017 12:27:20 -0800
Samuel Sieb <samuel(a)sieb.net> wrote:
On 01/31/2017 12:02 PM, Chris Murphy wrote:
> On Tue, Jan 31, 2017 at 7:33 AM, Chris Adams <linux(a)cmadams.net>
> wrote:
>> How do LVM RAID volumes get tested? There's a regular cron job for
>> testing MD RAID volumes, but I'm not aware of something like that
>> for LVM RAID.
>
> I'm not aware of an upstream cron job for this; nor one in Fedora.
>
> 'echo check > /sys/block/mdX/md/sync_action' works for either mdadm
> or LVM RAID, as it's kernel code doing the scrub; but LVM does have
> a command for it 'lvchange --syncaction {check|repair) vg/raid_lv'
>
There is something in Fedora that does this. I don't know whether
it's automatic in the kernel or there's a cron job. But my md RAID
arrays get scanned every once in a while and I didn't do anything to
set that up.
% rpm -qf /etc/cron.d/raid-check
mdadm-3.4-2.fc25.x86_64
% cat /etc/cron.d/raid-check
# Run system wide raid-check once a week on Sunday at 1am by default
0 1 * * Sun root /usr/sbin/raid-check
/etc/sysconfig/raid-check has the config. I think by default it's not
set to do anything, but perhaps something updates this on install.
kevin