Re: RGW: Is 'radosgw-admin reshard stale-instances rm' safe?

[Rudenko Aleksandr <ARudenko@xxxxxxx>]

Hi, Konstantin.

 

Thanks for the reply.

 

I know about stale instances and that they remained from prior version.

 

I ask about “marker” of bucket. I have bucket “clx” and I can see his current marker in stale-instances list.

As I know, stale-instances list must contain only previous marker ids.

From: Konstantin Shalygin <k0ste@xxxxxxxx>
Date: Friday, 21 June 2019 at 15:30
To: Rudenko Aleksandr <ARudenko@xxxxxxx>
Cc: "ceph-users@xxxxxxxxxxxxxx" <ceph-users@xxxxxxxxxxxxxx>
Subject: Re: [ceph-users] RGW: Is 'radosgw-admin reshard stale-instances rm' safe?

 

Hi, folks.

I have Luminous 12.2.12. Auto-resharding is enabled.

In stale instances list I have:

# radosgw-admin reshard stale-instances list | grep clx

    "clx:default.422998.196",

I have the same marker-id in bucket stats of this bucket:

# radosgw-admin bucket stats --bucket clx | grep marker

    "marker": "default.422998.196",

    "max_marker": "0#,1#,2#,3#,4#,5#,6#,7#,8#,9#,10#,11#,12#,13#,14#,15#,16#,17#,18#,19#,20#,21#,22#,23#,24#,25#,26#,27#,28#,29#,30#,31#,32#,33#,34#,35#,36#,37#,38#,39#,40#,41#,42#,43#,44#,45#,46#,47#,48#,49#,50#,51#,52#",

I think it is not correct. I think active marker (in bucket stats) must not match marker in stale instances list.

I have to run ‘radosgw-admin reshard stale-instances rm’ because I have large OMAP warning, but I am not sure.

Is it safe to run: radosgw-admin reshard stale-instances rm ?

Yes, this staled by dynamic resharding, mostly prior 12.2.11. At least I have not seen new one stales in my cluster.

 

 

k

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