[Gluster-users] 3.8.3 Shards Healing Glacier Slow

[David Gossage]

On Mon, Aug 29, 2016 at 7:14 AM, David Gossage <dgossage at carouselchecks.com>
wrote:

> On Mon, Aug 29, 2016 at 5:25 AM, Krutika Dhananjay <kdhananj at redhat.com>
> wrote:
>
>> Could you attach both client and brick logs? Meanwhile I will try these
>> steps out on my machines and see if it is easily recreatable.
>>
>>
> Hoping 7z files are accepted by mail server.
>

Also didnt do translation of timezones but in CST I started the node 1 heal
2016-08-26 20:26:42, and then the next morning i started initall node 2
heal at  2016-08-27 07:58:34

>
> -Krutika
>>
>> On Mon, Aug 29, 2016 at 2:31 PM, David Gossage <
>> dgossage at carouselchecks.com> wrote:
>>
>>> Centos 7 Gluster 3.8.3
>>>
>>> Brick1: ccgl1.gl.local:/gluster1/BRICK1/1
>>> Brick2: ccgl2.gl.local:/gluster1/BRICK1/1
>>> Brick3: ccgl4.gl.local:/gluster1/BRICK1/1
>>> Options Reconfigured:
>>> cluster.data-self-heal-algorithm: full
>>> cluster.self-heal-daemon: on
>>> cluster.locking-scheme: granular
>>> features.shard-block-size: 64MB
>>> features.shard: on
>>> performance.readdir-ahead: on
>>> storage.owner-uid: 36
>>> storage.owner-gid: 36
>>> performance.quick-read: off
>>> performance.read-ahead: off
>>> performance.io-cache: off
>>> performance.stat-prefetch: on
>>> cluster.eager-lock: enable
>>> network.remote-dio: enable
>>> cluster.quorum-type: auto
>>> cluster.server-quorum-type: server
>>> server.allow-insecure: on
>>> cluster.self-heal-window-size: 1024
>>> cluster.background-self-heal-count: 16
>>> performance.strict-write-ordering: off
>>> nfs.disable: on
>>> nfs.addr-namelookup: off
>>> nfs.enable-ino32: off
>>> cluster.granular-entry-heal: on
>>>
>>> Friday did rolling upgrade from 3.8.3->3.8.3 no issues.
>>> Following steps detailed in previous recommendations began proces of
>>> replacing and healngbricks one node at a time.
>>>
>>> 1) kill pid of brick
>>> 2) reconfigure brick from raid6 to raid10
>>> 3) recreate directory of brick
>>> 4) gluster volume start <> force
>>> 5) gluster volume heal <> full
>>>
>>> 1st node worked as expected took 12 hours to heal 1TB data.  Load was
>>> little heavy but nothing shocking.
>>>
>>> About an hour after node 1 finished I began same process on node2.  Heal
>>> proces kicked in as before and the files in directories visible from mount
>>> and .glusterfs healed in short time.  Then it began crawl of .shard adding
>>> those files to heal count at which point the entire proces ground to a halt
>>> basically.  After 48 hours out of 19k shards it has added 5900 to heal
>>> list.  Load on all 3 machnes is negligible.   It was suggested to change
>>> this value to full cluster.data-self-heal-algorithm and restart volume
>>> which I did.  No efffect.  Tried relaunching heal no effect, despite any
>>> node picked.  I started each VM and performed a stat of all files from
>>> within it, or a full virus scan  and that seemed to cause short small
>>> spikes in shards added, but not by much.  Logs are showing no real messages
>>> indicating anything is going on.  I get hits to brick log on occasion of
>>> null lookups making me think its not really crawling shards directory but
>>> waiting for a shard lookup to add it.  I'll get following in brick log but
>>> not constant and sometime multiple for same shard.
>>>
>>> [2016-08-29 08:31:57.478125] W [MSGID: 115009]
>>> [server-resolve.c:569:server_resolve] 0-GLUSTER1-server: no resolution
>>> type for (null) (LOOKUP)
>>> [2016-08-29 08:31:57.478170] E [MSGID: 115050]
>>> [server-rpc-fops.c:156:server_lookup_cbk] 0-GLUSTER1-server: 12591783:
>>> LOOKUP (null) (00000000-0000-0000-00
>>> 00-000000000000/241a55ed-f0d5-4dbc-a6ce-ab784a0ba6ff.221) ==> (Invalid
>>> argument) [Invalid argument]
>>>
>>> This one repeated about 30 times in row then nothing for 10 minutes then
>>> one hit for one different shard by itself.
>>>
>>> How can I determine if Heal is actually running?  How can I kill it or
>>> force restart?  Does node I start it from determine which directory gets
>>> crawled to determine heals?
>>>
>>> *David Gossage*
>>> *Carousel Checks Inc. | System Administrator*
>>> *Office* 708.613.2284
>>>
>>> _______________________________________________
>>> Gluster-users mailing list
>>> Gluster-users at gluster.org
>>> http://www.gluster.org/mailman/listinfo/gluster-users
>>>
>>
>>
>
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