Re: Standby is not removing restored WAL segments

On Mon, Sep 15, 2014 at 5:33 PM, Guillaume Lelarge
<guillaume(at)lelarge(dot)info> wrote:

> I have no direct answer for you, but we seem to have the same issue for two
> of our customers. We are on 9.2.8 on one of them. Do you know if you have
> the .ready related files in the archive_status directory? are they old WAL
> files? can you tell us their names?

We don't have their names anymore, but the stalled WAL segments were
from the same
timeline as the up-to-date ones and were removed after we did a restart.

As for the ready files, there are quite a lot of them:

pg_xlog/archive_status$ ls -la
total 68
drwx------ 2 postgres postgres 28672 Sep 16 12:46 .
drwxr-xr-x 3 postgres postgres 20480 Sep 16 12:41 ..
-rw------- 1 postgres postgres 0 Apr 10 16:47 0000000100006C17000000D3.ready
-rw------- 1 postgres postgres 0 Apr 10 16:47 0000000100006C17000000D4.ready
-rw------- 1 postgres postgres 0 Apr 10 16:47 0000000100006C17000000D5.ready
-rw------- 1 postgres postgres 0 Apr 10 16:47 0000000100006C17000000D6.ready
-rw------- 1 postgres postgres 0 Apr 10 16:56 0000000100006C17000000D7.ready
-rw------- 1 postgres postgres 0 Apr 10 16:56 0000000100006C17000000D8.ready
-rw------- 1 postgres postgres 0 Apr 10 16:56 0000000100006C17000000D9.ready
-rw------- 1 postgres postgres 0 Apr 10 16:56 0000000100006C17000000DA.ready
-rw------- 1 postgres postgres 0 Apr 10 16:56 0000000100006C17000000DB.ready
-rw------- 1 postgres postgres 0 Apr 10 16:56 0000000100006C17000000DC.ready
-rw------- 1 postgres postgres 0 Apr 10 16:56 0000000100006C17000000DD.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000DE.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000DF.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000E0.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000E1.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000E2.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000E3.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000E4.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000E5.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000E6.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000E7.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000E8.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000E9.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000EA.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000EB.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000EC.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000ED.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000EE.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000EF.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000F0.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000F1.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000F2.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000F3.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000F4.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000F5.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000F6.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000F7.ready
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-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C17000000FF.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C1800000000.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C1800000001.ready
-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C1800000002.ready
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-rw------- 1 postgres postgres 0 Apr 10 17:02 0000000100006C1800000005.ready
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-rw------- 1 postgres postgres 0 Sep 16 12:43 0000000300007A1200000059.done
-rw------- 1 postgres postgres 0 Sep 16 12:43 0000000300007A120000005A.done
-rw------- 1 postgres postgres 0 Sep 16 12:43 0000000300007A120000005B.done
-rw------- 1 postgres postgres 0 Sep 16 12:43 0000000300007A120000005C.done
-rw------- 1 postgres postgres 0 Sep 16 12:44 0000000300007A120000005D.done
-rw------- 1 postgres postgres 0 Sep 16 12:44 0000000300007A120000005E.done
-rw------- 1 postgres postgres 0 Sep 16 12:44 0000000300007A120000005F.done
-rw------- 1 postgres postgres 0 Sep 16 12:45 0000000300007A1200000060.done
-rw------- 1 postgres postgres 0 Sep 16 12:45 0000000300007A1200000061.done
-rw------- 1 postgres postgres 0 Sep 16 12:45 0000000300007A1200000062.done
-rw------- 1 postgres postgres 0 Sep 16 12:46 0000000300007A1200000063.done
-rw------- 1 postgres postgres 0 Apr 10 16:49 00000003.history.done
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000B5.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000B6.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000B7.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000B8.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000B9.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000BA.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000BB.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000BC.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000BD.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000BE.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000BF.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000C0.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000C1.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000C2.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000C3.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000C4.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000C5.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000C6.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000C7.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000C8.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000C9.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000CA.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000CB.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000CC.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000CD.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000CE.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000CF.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000D0.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000D1.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000D2.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000D3.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000D4.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000D5.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000D6.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000D7.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000D8.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000D9.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000DA.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000DB.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000DC.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000DD.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000DE.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000DF.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000E0.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000E1.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000E2.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000E3.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000E4.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000E5.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000E6.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000E7.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000E8.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000E9.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000EA.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000EB.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000EC.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000ED.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000EE.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000EF.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000F0.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000F1.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000F2.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000F3.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000F4.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000F5.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000F6.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000F7.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000F8.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000F9.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000FA.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000FB.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000FC.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000FD.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF4000000FE.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000000.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000001.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000002.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000003.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000004.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000005.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000006.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000007.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000008.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000009.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000000A.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000000B.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000000C.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000000D.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000000E.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000000F.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000010.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000011.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000012.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000013.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000014.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000015.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000016.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000017.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000018.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000019.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000001A.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000001B.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000001C.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000001D.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000001E.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000001F.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000020.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000021.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000022.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000023.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000024.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000025.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000026.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000027.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000028.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000029.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000002A.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000002B.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000002C.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000002D.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000002E.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF50000002F.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000030.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000031.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000032.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000033.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000034.ready
-rw------- 1 postgres postgres 0 Apr 9 13:13 0000000800006BF500000035.ready

I think most of them were generated to the moment right near the
timeline switch, likely
related to rebuilding of the master (and this replica) due to 9.3
upgrade or for some
other purposes. They do not correspond to the time when the database
was experiencing
issues described in the first post.

--
Regards,
Alexey Klyukin