OK, so looks like its ceph crushmap behavior http://docs.ceph.com/docs/master/rados/operations/crush-map/
--
Deepak
From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of Deepak Naidu
Sent: Friday, June 30, 2017 7:06 PM
To: David Turner; ceph-users@xxxxxxxxxxxxxx
Subject: Re: 300 active+undersized+degraded+remapped_______________________________________________
OK, I fixed the issue. But this is very weird. But will list them so its easy for other to check when there is similar issue.
1) I had create rack aware osd tree
2) I have SATA OSD’s and NVME OSD
3) I created rack aware policy for both SATA and NVME OSD
4) NVME OSD was used for CEPH FS Meta
5) Recently: When I tried reboot of OSD node, it seemed that my journal volumes which were on NVME didn’t startup bcos of the UDEV rules and I had to create startup script to fix them.
6) With that. I had rebooted all the OSD one by one monitoring the ceph status.
7) I was at the 3rd last node, then I notice the pgstuck warning. Not sure when and what happened, but I started getting this PG stuck issue(which is listed in my original email)
8) I wasted time to look at the issue/error, but then I found the pool 100% used issue.
9) Now when I tried ceph osd tree. It looks like my NVME OSD’s went back to the host level OSD’s rather than the newly created/mapped NVME rack level. Ie no OSD’s under nvme-host name. This was the issue.
10) Luckily I had created the backup of compiled version. I imported them in crushmap rule and now pool status is OK.
But, my question is how did ceph re-map the CRUSH rule ?
I had to create “new host entry” for NVME in crushmap ie
host OSD1-nvme -- This is just dummy entry in crushmap ie it doesn’t resolve to any hostname
host OSD1 -- This is the actual hostname and resolves to IP and has an hostname
Is that the issue ?
Current status
health HEALTH_OK
osdmap e5108: 610 osds: 610 up, 610 in
flags sortbitwise,require_jewel_osds
pgmap v247114: 15450 pgs, 3 pools, 322 GB data, 86102 objects
1155 GB used, 5462 TB / 5463 TB avail
15450 active+clean
Pool1 15 233M 0 1820T 3737
Pool2 16 0 0 1820T 0
Pool Meta 17 34928k 0 2357G 28
Partial list of my osd tree
-15 2.76392 rack rack1-nvme
-18 0.69098 host OSD1-nvme
60 0.69098 osd.60 up 1.00000 1.00000
-21 0.69098 host OSD2-nvme
243 0.69098 osd.243 up 1.00000 1.00000
-24 0.69098 host OSD3-NGN1-nvme
426 0.69098 osd.426 up 1.00000 1.00000
-1 5456.27734 root default
-12 2182.51099 rack rack1-sata
-2 545.62775 host OSD1
0 9.09380 osd.0 up 1.00000 1.00000
1 9.09380 osd.1 up 1.00000 1.00000
2 9.09380 osd.2 up 1.00000 1.00000
3 9.09380 osd.3 up 1.00000 1.00000
-2 545.62775 host OSD2
0 9.09380 osd.0 up 1.00000 1.00000
1 9.09380 osd.1 up 1.00000 1.00000
2 9.09380 osd.2 up 1.00000 1.00000
3 9.09380 osd.3 up 1.00000 1.00000
-2 545.62775 host OSD2
0 9.09380 osd.0 up 1.00000 1.00000
1 9.09380 osd.1 up 1.00000 1.00000
2 9.09380 osd.2 up 1.00000 1.00000
3 9.09380 osd.3 up 1.00000 1.00000
--
Deepak
From: David Turner [mailto:drakonstein@xxxxxxxxx]
Sent: Friday, June 30, 2017 6:36 PM
To: Deepak Naidu; ceph-users@xxxxxxxxxxxxxx
Subject: Re: 300 active+undersized+degraded+remapped
ceph status
ceph osd treeIs your meta pool on ssds instead of the same root and osds as the rest of the cluster?
On Fri, Jun 30, 2017, 9:29 PM Deepak Naidu <dnaidu@xxxxxxxxxx> wrote:
Hello,
I am getting the below error and I am unable to get them resolved even after starting and stopping the OSD’s. All the OSD’s seems to be up.
How do I repair the OSD’s or fix them manually. I am using cephFS. But oddly the ceph df is showing 100% used(which is showing in KB). But the pool is 1886G(with 3 copies). I can still write to the ceph FS without any issue. Not sure why is CEPH reporting the wrong info of 100% full
ceph version 10.2.7
health HEALTH_WARN
300 pgs degraded
300 pgs stuck degraded
300 pgs stuck unclean
300 pgs stuck undersized
300 pgs undersized
recovery 28/19674 objects degraded (0.142%)
recovery 56/19674 objects misplaced (0.285%)
GLOBAL:
SIZE AVAIL RAW USED %RAW USED
5463T 5462T 187G 0
POOLS:
NAME ID USED %USED MAX AVAIL OBJECTS
Pool1 15 233M 0 1820T 3737
Pool2 16 0 0 1820T 0
PoolMeta 17 34719k 100.00 0 28
Any help is appreciated
--
Deepak
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