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James,
You have an omap corruption. It is likely caused by a bug
which has already been identified. A fix for that problem is
available but it is still pending backport for the next Jewel
point release. All 4 of your replicas have different
"omap_digest" values.
Instead of the xattrs the ceph-osdomap-tool --command
dump-objects-with-keys output from OSDs 3, 10, 11, 23 would be
interesting to compare.
***WARNING*** Please backup your data before doing any repair
attempts.
If you can upgrade to Kraken v11.2.0, it will auto repair the
omaps on ceph-osd start up. It will likely still require a ceph
pg repair to make the 4 replicas consistent with each other. The
final result may be the reappearance of removed MDS files in the
directory.
If you can recover the data, you could remove the directory
entirely and rebuild it. The original bug was triggered during
omap deletion typically in a large directory which corresponds to
an individual unlink in cephfs.
If you can build a branch in github to get the newer
ceph-osdomap-tool you could try to use it to repair the omaps.
David
On 5/2/17 5:05 AM, James Eckersall
wrote:
Hi,
I'm having some issues with a ceph cluster. It's an 8 node cluster rnning
Jewel ceph-10.2.7-0.el7.x86_64 on CentOS 7.
This cluster provides RBDs and a CephFS filesystem to a number of clients.
ceph health detail is showing the following errors:
pg 2.9 is active+clean+inconsistent, acting [3,10,11,23]
1 scrub errors
mds0: Metadata damage detected
The pg 2.9 is in the cephfs_metadata pool (id 2).
I've looked at the OSD logs for OSD 3, which is the primary for this PG,
but the only thing that appears relating to this PG is the following:
log_channel(cluster) log [ERR] : 2.9 deep-scrub 1 errors
After initiating a ceph pg repair 2.9, I see the following in the primary
OSD log:
log_channel(cluster) log [ERR] : 2.9 repair 1 errors, 0 fixed
log_channel(cluster) log [ERR] : 2.9 deep-scrub 1 errors
I found the below command in a previous ceph-users post. Running this
returns the following:
# rados list-inconsistent-obj 2.9
{"epoch":23738,"inconsistents":[{"object":{"name":"10000411194.00000000","nspace":"","locator":"","snap":"head","version":14737091},"errors":["omap_digest_mismatch"],"union_shard_errors":[],"selected_object_info":"2:9758b358:::10000411194.00000000:head(33456'14737091
mds.0.214448:248532 dirty|omap|data_digest s 0 uv 14737091 dd
ffffffff)","shards":[{"osd":3,"errors":[],"size":0,"omap_digest":"0x6748eef3","data_digest":"0xffffffff"},{"osd":10,"errors":[],"size":0,"omap_digest":"0xa791d5a4","data_digest":"0xffffffff"},{"osd":11,"errors":[],"size":0,"omap_digest":"0x53f46ab0","data_digest":"0xffffffff"},{"osd":23,"errors":[],"size":0,"omap_digest":"0x97b80594","data_digest":"0xffffffff"}]}]}
So from this, I think that the object in PG 2.9 with the problem is
10000411194.00000000.
This is what I see on the filesystem on the 4 OSD's this PG resides on:
-rw-r--r--. 1 ceph ceph 0 Apr 27 12:31
/var/lib/ceph/osd/ceph-3/current/2.9_head/DIR_9/DIR_E/DIR_A/DIR_1/10000411194.00000000__head_1ACD1AE9__2
-rw-r--r--. 1 ceph ceph 0 Apr 15 22:05
/var/lib/ceph/osd/ceph-10/current/2.9_head/DIR_9/DIR_E/DIR_A/DIR_1/10000411194.00000000__head_1ACD1AE9__2
-rw-r--r--. 1 ceph ceph 0 Apr 15 22:07
/var/lib/ceph/osd/ceph-11/current/2.9_head/DIR_9/DIR_E/DIR_A/DIR_1/10000411194.00000000__head_1ACD1AE9__2
-rw-r--r--. 1 ceph ceph 0 Apr 16 03:58
/var/lib/ceph/osd/ceph-23/current/2.9_head/DIR_9/DIR_E/DIR_A/DIR_1/10000411194.00000000__head_1ACD1AE9__2
The extended attrs are as follows, although I have no idea what any of them
mean.
# file:
var/lib/ceph/osd/ceph-11/current/2.9_head/DIR_9/DIR_E/DIR_A/DIR_1/10000411194.00000000__head_1ACD1AE9__2
user.ceph._=0sDwj5AAAABAM1AAAAAAAAABQAAAAxMDAwMDQxMTE5NC4wMDAwMDAwMP7/////////6RrNGgAAAAAAAgAAAAAAAAAGAxwAAAACAAAAAAAAAP////8AAAAAAAAAAP//////////AAAAABUn4QAAAAAAu4IAAK4m4QAAAAAAu4IAAAICFQAAAAIAAAAAAAAAAOSZDAAAAAAAsEUDAAAAAAAAAAAAjUoIWUgWsQQCAhUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAVJ+EAAAAAAAAAAAAAAAAAABwAAACNSghZESm8BP///w==
user.ceph._@1=0s//////8=
user.ceph._layout=0sAgIYAAAAAAAAAAAAAAAAAAAA//////////8AAAAA
user.ceph._parent=0sBQRPAQAAlBFBAAABAAAIAAAAAgIjAAAAjxFBAAABAAAPAAAAdHViZWFtYXRldXIubmV0qdgAAAAAAAACAh0AAAB/EUEAAAEAAAkAAAB3cC1yb2NrZXREAAAAAAAAAAICGQAAABYNQQAAAQAABQAAAGNhY2hlUgAAAAAAAAACAh4AAAAQDUEAAAEAAAoAAAB3cC1jb250ZW50NAMAAAAAAAACAhgAAAANDUEAAAEAAAQAAABodG1sIAEAAAAAAAACAikAAADagTMAAAEAABUAAABuZ2lueC1waHA3LWNsdmdmLWRhdGGJAAAAAAAAAAICMwAAADkAAAAAAQ==
user.ceph._parent@1
=0sAAAfAAAANDg4LTU3YjI2NTdmMmZhMTMtbWktcHJveWVjdG8tMXSQCAAAAAAAAgIcAAAAAQAAAAAAAAAIAAAAcHJvamVjdHPBAgcAAAAAAAIAAAAAAAAAAAAAAA==
user.ceph.snapset=0sAgIZAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAA==
user.cephos.seq=0sAQEQAAAAgcAqFAAAAAAAAAAAAgAAAAA=
user.cephos.spill_out=0sMAA=getfattr: Removing leading '/' from absolute
path names
# file:
var/lib/ceph/osd/ceph-3/current/2.9_head/DIR_9/DIR_E/DIR_A/DIR_1/10000411194.00000000__head_1ACD1AE9__2
user.ceph._=0sDwj5AAAABAM1AAAAAAAAABQAAAAxMDAwMDQxMTE5NC4wMDAwMDAwMP7/////////6RrNGgAAAAAAAgAAAAAAAAAGAxwAAAACAAAAAAAAAP////8AAAAAAAAAAP//////////AAAAABUn4QAAAAAAu4IAAK4m4QAAAAAAu4IAAAICFQAAAAIAAAAAAAAAAOSZDAAAAAAAsEUDAAAAAAAAAAAAjUoIWUgWsQQCAhUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAVJ+EAAAAAAAAAAAAAAAAAABwAAACNSghZESm8BP///w==
user.ceph._@1=0s//////8=
user.ceph._layout=0sAgIYAAAAAAAAAAAAAAAAAAAA//////////8AAAAA
user.ceph._parent=0sBQRPAQAAlBFBAAABAAAIAAAAAgIjAAAAjxFBAAABAAAPAAAAdHViZWFtYXRldXIubmV0qdgAAAAAAAACAh0AAAB/EUEAAAEAAAkAAAB3cC1yb2NrZXREAAAAAAAAAAICGQAAABYNQQAAAQAABQAAAGNhY2hlUgAAAAAAAAACAh4AAAAQDUEAAAEAAAoAAAB3cC1jb250ZW50NAMAAAAAAAACAhgAAAANDUEAAAEAAAQAAABodG1sIAEAAAAAAAACAikAAADagTMAAAEAABUAAABuZ2lueC1waHA3LWNsdmdmLWRhdGGJAAAAAAAAAAICMwAAADkAAAAAAQ==
user.ceph._parent@1
=0sAAAfAAAANDg4LTU3YjI2NTdmMmZhMTMtbWktcHJveWVjdG8tMXSQCAAAAAAAAgIcAAAAAQAAAAAAAAAIAAAAcHJvamVjdHPBAgcAAAAAAAIAAAAAAAAAAAAAAA==
user.ceph.snapset=0sAgIZAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAA==
user.cephos.seq=0sAQEQAAAAZaQ9GwAAAAAAAAAAAgAAAAA=
user.cephos.spill_out=0sMAA=getfattr: Removing leading '/' from absolute
path names
# file:
var/lib/ceph/osd/ceph-10/current/2.9_head/DIR_9/DIR_E/DIR_A/DIR_1/10000411194.00000000__head_1ACD1AE9__2
user.ceph._=0sDwj5AAAABAM1AAAAAAAAABQAAAAxMDAwMDQxMTE5NC4wMDAwMDAwMP7/////////6RrNGgAAAAAAAgAAAAAAAAAGAxwAAAACAAAAAAAAAP////8AAAAAAAAAAP//////////AAAAABUn4QAAAAAAu4IAAK4m4QAAAAAAu4IAAAICFQAAAAIAAAAAAAAAAOSZDAAAAAAAsEUDAAAAAAAAAAAAjUoIWUgWsQQCAhUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAVJ+EAAAAAAAAAAAAAAAAAABwAAACNSghZESm8BP///w==
user.ceph._@1=0s//////8=
user.ceph._layout=0sAgIYAAAAAAAAAAAAAAAAAAAA//////////8AAAAA
user.ceph._parent=0sBQRPAQAAlBFBAAABAAAIAAAAAgIjAAAAjxFBAAABAAAPAAAAdHViZWFtYXRldXIubmV0qdgAAAAAAAACAh0AAAB/EUEAAAEAAAkAAAB3cC1yb2NrZXREAAAAAAAAAAICGQAAABYNQQAAAQAABQAAAGNhY2hlUgAAAAAAAAACAh4AAAAQDUEAAAEAAAoAAAB3cC1jb250ZW50NAMAAAAAAAACAhgAAAANDUEAAAEAAAQAAABodG1sIAEAAAAAAAACAikAAADagTMAAAEAABUAAABuZ2lueC1waHA3LWNsdmdmLWRhdGGJAAAAAAAAAAICMwAAADkAAAAAAQ==
user.ceph._parent@1
=0sAAAfAAAANDg4LTU3YjI2NTdmMmZhMTMtbWktcHJveWVjdG8tMXSQCAAAAAAAAgIcAAAAAQAAAAAAAAAIAAAAcHJvamVjdHPBAgcAAAAAAAIAAAAAAAAAAAAAAA==
user.ceph.snapset=0sAgIZAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAA==
user.cephos.seq=0sAQEQAAAA1T1dEQAAAAAAAAAAAgAAAAA=
user.cephos.spill_out=0sMAA=getfattr: Removing leading '/' from absolute
path names
# file:
var/lib/ceph/osd/ceph-23/current/2.9_head/DIR_9/DIR_E/DIR_A/DIR_1/10000411194.00000000__head_1ACD1AE9__2
user.ceph._=0sDwj5AAAABAM1AAAAAAAAABQAAAAxMDAwMDQxMTE5NC4wMDAwMDAwMP7/////////6RrNGgAAAAAAAgAAAAAAAAAGAxwAAAACAAAAAAAAAP////8AAAAAAAAAAP//////////AAAAABUn4QAAAAAAu4IAAK4m4QAAAAAAu4IAAAICFQAAAAIAAAAAAAAAAOSZDAAAAAAAsEUDAAAAAAAAAAAAjUoIWUgWsQQCAhUAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAVJ+EAAAAAAAAAAAAAAAAAABwAAACNSghZESm8BP///w==
user.ceph._@1=0s//////8=
user.ceph._layout=0sAgIYAAAAAAAAAAAAAAAAAAAA//////////8AAAAA
user.ceph._parent=0sBQRPAQAAlBFBAAABAAAIAAAAAgIjAAAAjxFBAAABAAAPAAAAdHViZWFtYXRldXIubmV0qdgAAAAAAAACAh0AAAB/EUEAAAEAAAkAAAB3cC1yb2NrZXREAAAAAAAAAAICGQAAABYNQQAAAQAABQAAAGNhY2hlUgAAAAAAAAACAh4AAAAQDUEAAAEAAAoAAAB3cC1jb250ZW50NAMAAAAAAAACAhgAAAANDUEAAAEAAAQAAABodG1sIAEAAAAAAAACAikAAADagTMAAAEAABUAAABuZ2lueC1waHA3LWNsdmdmLWRhdGGJAAAAAAAAAAICMwAAADkAAAAAAQ==
user.ceph._parent@1
=0sAAAfAAAANDg4LTU3YjI2NTdmMmZhMTMtbWktcHJveWVjdG8tMXSQCAAAAAAAAgIcAAAAAQAAAAAAAAAIAAAAcHJvamVjdHPBAgcAAAAAAAIAAAAAAAAAAAAAAA==
user.ceph.snapset=0sAgIZAAAAAAAAAAAAAAABAAAAAAAAAAAAAAAAAAAAAA==
user.cephos.seq=0sAQEQAAAADiM7AAAAAAAAAAAAAgAAAAA=
user.cephos.spill_out=0sMAA=getfattr: Removing leading '/' from absolute
path names
With metadata damage issue, I can get the list of inodes with the command
below.
$ ceph tell mds.0 damage ls | python -m "json.tool"
[
{
"damage_type": "dir_frag",
"frag": "*",
"id": 5129156,
"ino": 1099556021325
},
{
"damage_type": "dir_frag",
"frag": "*",
"id": 8983971,
"ino": 1099548098243
},
{
"damage_type": "dir_frag",
"frag": "*",
"id": 33278608,
"ino": 1099548257921
},
{
"damage_type": "dir_frag",
"frag": "*",
"id": 33455691,
"ino": 1099548271575
},
{
"damage_type": "dir_frag",
"frag": "*",
"id": 38203788,
"ino": 1099548134708
},
...
All of the inodes (approx 800 of them) are for various directories within a
wordpress cache directory.
I ran an rm -rf on each of the directories as I do not need the content.
The content of the directories was removed, but the directories are unable
to be removed as rmdir reports they are not empty, despite having 0 files
listed with ls.
I'm not sure if these two issues are related to each other. They were
noticed within a day of each other. I think the metadata damage error
appeared before the scrub error.
I'm at a bit of a loss with how to proceed and I don't want to make things
worse.
I'd really appreciate any help that anyone can give to try and resolve
these problems.
Thanks
J
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