pg not [deep] scrubbed since 0.000000 -- w/fix

[Harry Coin]

Would ubuntu include the nautilus patch https://github.com/ceph/ceph/pull/28869 ?

Right now the ceph dashboard won't report 'normal'/'green' because of the bug/hack of resetting scrub timestamps to 0 when auto-repair is set. The above patch, accepted in May by Ceph, fixes that.
Fixes: http://tracker.ceph.com/issues/40073

From upstream..

 osd: Fix the way that auto repair triggers after regular scrub

We used a trick to get auto repair to happen after scrub errors
which reset the scrub/deep-scrub stamps. This not only
looks bad to the user, but causes health warnings. Instead
use a new scrubber flag need_auto which causes reg_next_srub()
to set deadline for immediate scrubbing. It also causes time_for_deep
to be set so that auto repair triggers.

Every regular scrub was triggering a deep scrub. Check
scrubber.authoritative.size() (scrub error count), so regular scrub doesn't
trigger deep-scrub when there are no errors.

Caused by: 2202e5d

[Dan Hill (hillpd)]

pr#28869 fixed upstream in 14.2.3. This version is in the eoan-updates and focal pockets.

For UCA, both train-proposed and ussuri-proposed have this fixed, but these have not yet landed:
 ceph | 14.2.2-0ubuntu3~cloud0 | train | bionic-updates | source
 ceph | 14.2.4-0ubuntu0.19.10.1~cloud0 | train-proposed | bionic-proposed | source
 ceph | 14.2.2-0ubuntu3~cloud0 | ussuri | bionic-updates | source
 ceph | 14.2.5-3ubuntu4~cloud0 | ussuri-proposed | bionic-proposed | source

[Harry Coin (hcoin)]

Thanks Dan!

On 2/13/20 1:24 PM, Dan Hill wrote:
> pr#28869 fixed upstream in 14.2.3. This version is in the eoan-updates
> and focal pockets.
>
> For UCA, both train-proposed and ussuri-proposed have this fixed, but these have not yet landed:
> ceph | 14.2.2-0ubuntu3~cloud0 | train | bionic-updates | source
> ceph | 14.2.4-0ubuntu0.19.10.1~cloud0 | train-proposed | bionic-proposed | source
> ceph | 14.2.2-0ubuntu3~cloud0 | ussuri | bionic-updates | source
> ceph | 14.2.5-3ubuntu4~cloud0 | ussuri-proposed | bionic-proposed | source
>
>
> ** Also affects: ceph (Ubuntu Focal)
> Importance: Undecided
> Status: New
>
> ** Also affects: ceph (Ubuntu Xenial)
> Importance: Undecided
> Status: New
>
> ** Also affects: ceph (Ubuntu Bionic)
> Importance: Undecided
> Status: New
>
> ** Also affects: ceph (Ubuntu Eoan)
> Importance: Undecided
> Status: New
>
> ** Changed in: ceph (Ubuntu Xenial)
> Status: New => Won't Fix
>
> ** Changed in: ceph (Ubuntu Bionic)
> Status: New => Won't Fix
>
> ** Changed in: ceph (Ubuntu Eoan)
> Status: New => Fix Released
>
> ** Changed in: ceph (Ubuntu Focal)
> Status: New => Fix Released
>