Re: 3.8.3 Shards Healing Glacier Slow

[Darrell Budic <budic@xxxxxxxxxxxxxxxx>]

I noticed that my new brick (replacement disk) did not have a .shard directory created on the brick, if that helps. 

I removed the affected brick from the volume and then wiped the disk, did an add-brick, and everything healed right up. I didn’t try and set any attrs or anything else, just removed and added the brick as new.

On Aug 29, 2016, at 9:49 AM, Darrell Budic <budic@xxxxxxxxxxxxxxxx> wrote:

Just to let you know I’m seeing the same issue under 3.7.14 on CentOS 7. Some content was healed correctly, now all the shards are queued up in a heal list, but nothing is healing. Got similar brick errors logged to the ones David was getting on the brick that isn’t healing:

[2016-08-29 03:31:40.436110] E [MSGID: 115050] [server-rpc-fops.c:179:server_lookup_cbk] 0-gv0-rep-server: 1613822: LOOKUP (null) (00000000-0000-0000-0000-000000000000/0f61bf63-8ef1-4e53-8bc3-6d46590c4fb1.29) ==> (Invalid argument) [Invalid argument]

[2016-08-29 03:31:43.005013] E [MSGID: 115050] [server-rpc-fops.c:179:server_lookup_cbk] 0-gv0-rep-server: 1616802: LOOKUP (null) (00000000-0000-0000-0000-000000000000/0f61bf63-8ef1-4e53-8bc3-6d46590c4fb1.40) ==> (Invalid argument) [Invalid argument]

This was after replacing the drive the brick was on and trying to get it back into the system by setting the volume's fattr on the brick dir. I’ll try the suggested method here on it it shortly.

  -Darrell

On Aug 29, 2016, at 7:25 AM, Krutika Dhananjay <kdhananj@xxxxxxxxxx> wrote:

Got it. Thanks.

I tried the same test and shd crashed with SIGABRT (well, that's because I compiled from src with -DDEBUG).
In any case, this error would prevent full heal from proceeding further.

I'm debugging the crash now. Will let you know when I have the RC.

-Krutika

On Mon, Aug 29, 2016 at 5:47 PM, David Gossage <dgossage@xxxxxxxxxxxxxxxxxx> wrote:

On Mon, Aug 29, 2016 at 7:14 AM, David Gossage <dgossage@xxxxxxxxxxxxxxxxxx> wrote:

On Mon, Aug 29, 2016 at 5:25 AM, Krutika Dhananjay <kdhananj@xxxxxxxxxx> 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.

looks like zip file awaiting approval due to size 

-Krutika

On Mon, Aug 29, 2016 at 2:31 PM, David Gossage <dgossage@xxxxxxxxxxxxxxxxxx> 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

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