Re: Scrub while cluster re-balancing

Mallikarjun Biradar <mallikarjuna.biradar@xxxxxxxxx> · Wed, 3 Dec 2014 00:23:01 +0530

Hi Craig,
 ceph -s is not showing any PG's in pool2.

I have 3 pools.  rbd and two pools that i created testPool and testPool2.
I have more than 10TB of data in testPool1 and good amount of data in testPool2 as well.

 Iam not using rbd pool.
-Thanks & regards, 

Mallikarjun Biradar
On 3 Dec 2014 00:15, "Craig Lewis" <clewis@xxxxxxxxxxxxxxxxxx> wrote:
You mean `ceph -w` and `ceph -s` didn't show any PGs in the active+clean+scrubbing state while pool 2's PGs were being scrubbed?
I see that happen with my really small pools.  I have a bunch of RadosGW pools that contain <5 objects, and ~1kB of data.  When I scrub the PGs in those pools, they complete so fast that they never show up in `ceph -w`.

Since you have pools 0, 1, and 2, I assume those are the default 'data', 'metadata', and 'rdb'.  If you're not using RDB, then the rdb pool will be very small.

On Tue, Dec 2, 2014 at 5:32 AM, Mallikarjun Biradar <mallikarjuna.biradar@xxxxxxxxx> wrote:
Hi all,

I was running scrub while cluster is in re-balancing state.
From the osd logs..

2014-12-02 18:50:26.934802 7fcc6b614700  0 log_channel(default) log [INF] : 0.3 scrub ok
2014-12-02 18:50:27.890785 7fcc6b614700  0 log_channel(default) log [INF] : 0.24 scrub ok
2014-12-02 18:50:31.902978 7fcc6b614700  0 log_channel(default) log [INF] : 0.25 scrub ok
2014-12-02 18:50:33.088060 7fcc6b614700  0 log_channel(default) log [INF] : 0.33 scrub ok
2014-12-02 18:50:50.828893 7fcc6b614700  0 log_channel(default) log [INF] : 1.61 scrub ok
2014-12-02 18:51:06.774648 7fcc6b614700  0 log_channel(default) log [INF] : 1.68 scrub ok
2014-12-02 18:51:20.463283 7fcc6b614700  0 log_channel(default) log [INF] : 1.80 scrub ok
2014-12-02 18:51:39.883295 7fcc6b614700  0 log_channel(default) log [INF] : 1.89 scrub ok
2014-12-02 18:52:00.568808 7fcc6b614700  0 log_channel(default) log [INF] : 1.9f scrub ok
2014-12-02 18:52:15.897191 7fcc6b614700  0 log_channel(default) log [INF] : 1.a3 scrub ok
2014-12-02 18:52:34.681874 7fcc6b614700  0 log_channel(default) log [INF] : 1.aa scrub ok
2014-12-02 18:52:47.833630 7fcc6b614700  0 log_channel(default) log [INF] : 1.b1 scrub ok
2014-12-02 18:53:09.312792 7fcc6b614700  0 log_channel(default) log [INF] : 1.b3 scrub ok
2014-12-02 18:53:25.324635 7fcc6b614700  0 log_channel(default) log [INF] : 1.bd scrub ok
2014-12-02 18:53:48.638475 7fcc6b614700  0 log_channel(default) log [INF] : 1.c3 scrub ok
2014-12-02 18:54:02.996972 7fcc6b614700  0 log_channel(default) log [INF] : 1.d7 scrub ok
2014-12-02 18:54:19.660038 7fcc6b614700  0 log_channel(default) log [INF] : 1.d8 scrub ok
2014-12-02 18:54:32.780646 7fcc6b614700  0 log_channel(default) log [INF] : 1.fa scrub ok
2014-12-02 18:54:36.772931 7fcc6b614700  0 log_channel(default) log [INF] : 2.4 scrub ok
2014-12-02 18:54:41.758487 7fcc6b614700  0 log_channel(default) log [INF] : 2.9 scrub ok
2014-12-02 18:54:46.910043 7fcc6b614700  0 log_channel(default) log [INF] : 2.a scrub ok
2014-12-02 18:54:51.908335 7fcc6b614700  0 log_channel(default) log [INF] : 2.16 scrub ok
2014-12-02 18:54:54.940807 7fcc6b614700  0 log_channel(default) log [INF] : 2.19 scrub ok
2014-12-02 18:55:00.956170 7fcc6b614700  0 log_channel(default) log [INF] : 2.44 scrub ok
2014-12-02 18:55:01.948455 7fcc6b614700  0 log_channel(default) log [INF] : 2.4f scrub ok
2014-12-02 18:55:07.273587 7fcc6b614700  0 log_channel(default) log [INF] : 2.76 scrub ok
2014-12-02 18:55:10.641274 7fcc6b614700  0 log_channel(default) log [INF] : 2.9e scrub ok
2014-12-02 18:55:11.621669 7fcc6b614700  0 log_channel(default) log [INF] : 2.ab scrub ok
2014-12-02 18:55:18.261900 7fcc6b614700  0 log_channel(default) log [INF] : 2.b0 scrub ok
2014-12-02 18:55:19.560766 7fcc6b614700  0 log_channel(default) log [INF] : 2.b1 scrub ok
2014-12-02 18:55:20.501591 7fcc6b614700  0 log_channel(default) log [INF] : 2.bb scrub ok
2014-12-02 18:55:21.523936 7fcc6b614700  0 log_channel(default) log [INF] : 2.cd scrub ok

Interestingly, for pg's 2.x (2.4, 2.9 etc)in logs here, cluster status was not reporting scrubbing, whereas for 0.x & 1.x it was reporting as scrubbing in cluster status.

In case of scrub operation on PG's (2.x) is really scrubbing performed OR cluster status is missing to report them?

 -Thanks & Regards,
Mallikarjun Biradar

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