Re: What to do when pg_xlog directory has filled up the filesystem

On 1/23/2015 11:33 AM, Jeff Frost wrote:
>> On Jan 23, 2015, at 08:00, John Scalia <jayknowsunix@gmail.com> wrote:
>>
>> Hi all,
>>
>> Just curious about this issue as it has occurred on my 9.4.0 sandbox primary server. The link to the directory
specifiedin archive_command had disappeared, so the command specified in archive_command kept failing overnight. This
resultedin many WAL segments piling up in the pg_xlog directory and a bunch of <wal name>.ready files appearing in the
pg_xlog/archive.statusdirectory. The filesystem had reached 100% full so the database quit and would not restart. I've
thoughtabout just moving some of the WAL segments temporarily to another filesystem, but which ones, oldest or newest?
Andis that really the best way to deal with this or what is the best way to deal with this kind of issue? 
> If you are on ext4, you can just:
>
> tune2fs -m 0 /dev/sda1
>
> Or whatever device you're talking about.
>
> That will reset the reserved space to 0.
>
> Then you can start up PostgreSQL and let it do the archiving. After it's done:
>
> tune2fs -m 5 /dev/sda1
>
> To put it back to the default.
>
Thanks, Jeff!