Re: stale WAL files?

> On Mar 29, 2019, at 6:58 AM, Michael Paquier <michael(at)paquier(dot)xyz> wrote:
>
>> On Thu, Mar 28, 2019 at 09:53:16AM -0600, Rob Sargent wrote:
>> This is pg10 so it's pg_wal. ls -ltr
>>
>>
>> -rw-------. 1 postgres postgres 16777216 Mar 16 16:33
>> 0000000100000CEA000000B1
>> -rw-------. 1 postgres postgres 16777216 Mar 16 16:33
>> 0000000100000CEA000000B2
>>
>> ... 217 more on through to ...
>>
>> -rw-------. 1 postgres postgres 16777216 Mar 16 17:01
>> 0000000100000CEA000000E8
>> -rw-------. 1 postgres postgres 16777216 Mar 16 17:01
>> 0000000100000CEA000000E9
>> -rw-------. 1 postgres postgres 16777216 Mar 28 09:46
>> 0000000100000CEA0000000E
>
Today there are 210 Mar 16 WAL files versus the originally reported 271. I cannot at this point confirm the original count, other that to say I used “ls -ltr | grep ‘Mar 16’ | wc -l” to get both numbers.

Is it interesting that the earliest files (by ls time stamp) are not lowest numerically? Those two file names end “0000B[12]” (written at 16:33) in a range across the directory from “00001A” through “0000E9”? “0000B0” was written at16:53 and “0000B3” was written at 16:54
Is there any analysis of the file names I could do which might shed any light on the issue?