On 1/15/19 9:02 AM, Stefan Priebe - Profihost AG wrote:
Am 15.01.19 um 12:45 schrieb Marc Roos:
I upgraded this weekend from 12.2.8 to 12.2.10 without such issues
(osd's are idle)
it turns out this was a kernel bug. Updating to a newer kernel - has
solved this issue.
Greets,
Stefan
Hi Stefan, can you tell me what kernel you were on and what hardware was
involved? I want to make sure that it's recorded for the community in
case others run into the same issue.
Thanks,
Mark
-----Original Message-----
From: Stefan Priebe - Profihost AG [mailto:s.priebe@xxxxxxxxxxxx]
Sent: 15 January 2019 10:26
To: ceph-users@xxxxxxxxxxxxxx
Cc: n.fahldieck@xxxxxxxxxxxx
Subject: Re: slow requests and high i/o / read rate on
bluestore osds after upgrade 12.2.8 -> 12.2.10
Hello list,
i also tested current upstream/luminous branch and it happens as well. A
clean install works fine. It only happens on upgraded bluestore osds.
Greets,
Stefan
Am 14.01.19 um 20:35 schrieb Stefan Priebe - Profihost AG:
while trying to upgrade a cluster from 12.2.8 to 12.2.10 i'm
experience
issues with bluestore osds - so i canceled the upgrade and all
bluestore
osds are stopped now.
After starting a bluestore osd i'm seeing a lot of slow requests
caused
by very high read rates.
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s
avgrq-sz avgqu-sz await r_await w_await svctm %util
sda 45,00 187,00 767,00 39,00 482040,00 8660,00
1217,62 58,16 74,60 73,85 89,23 1,24 100,00
it reads permanently with 500MB/s from the disk and can't service
client
requests. Overall client read rate is at 10.9MiB/s rd
I can't reproduce this with 12.2.8. Is this a known bug / regression?
Greets,
Stefan
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