Re: Inconsistent PG, repair doesn't work

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As a part of a repair is queuing a deep scrub. As soon as the repair part is over the deep scrub continues until it is done.

On Thu, Oct 11, 2018, 12:26 PM Brett Chancellor <bchancellor@xxxxxxxxxxxxxx> wrote:
Does the "repair" function use the same rules as a deep scrub? I couldn't get one to kick off, until I temporarily increased the max_scrubs and lowered the scrub_min_interval on all 3 OSDs for that placement group. This ended up fixing the issue, so I'll leave this here in case somebody else runs into it.

sudo ceph tell 'osd.208' injectargs '--osd_max_scrubs 3'
sudo ceph tell 'osd.120' injectargs '--osd_max_scrubs 3'
sudo ceph tell 'osd.235' injectargs '--osd_max_scrubs 3'
sudo ceph tell 'osd.208' injectargs '--osd_scrub_min_interval 1.0'
sudo ceph tell 'osd.120' injectargs '--osd_scrub_min_interval 1.0'
sudo ceph tell 'osd.235' injectargs '--osd_scrub_min_interval 1.0'
sudo ceph pg repair 75.302

-Brett


On Thu, Oct 11, 2018 at 8:42 AM Maks Kowalik <maks_kowalik@xxxxxxxxx> wrote:
Imho moving was not the best idea (a copying attempt would have told if the read error was the case here).
Scrubs might don't want to start if there are many other scrubs ongoing.

czw., 11 paź 2018 o 14:27 Brett Chancellor <bchancellor@xxxxxxxxxxxxxx> napisał(a):
I moved the file. But the cluster won't actually start any scrub/repair I manually initiate.

On Thu, Oct 11, 2018, 7:51 AM Maks Kowalik <maks_kowalik@xxxxxxxxx> wrote:
Based on the log output it looks like you're having a damaged file on OSD 235 where the shard is stored.
To ensure if that's the case you should find the file (using 81d5654895863d as a part of its name) and try to copy it to another directory.
If you get the I/O error while copying, the next steps would be to delete the file, run the scrub on 75.302 and take a deep look at the OSD.235 for any other errors.

Kind regards,
Maks
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