Re: Weird disk/table space consumption problem

Scott Marlowe wrote:
>> So, I wonder what went wrong? Any explanation? Soft raid no good for
>> PostgreSQL?
>
> I've no such problems caused by modern linux software RAID (md).  It's
> no surprise pgsql didn't free up the space, as it was all likely dead
> tuples at that point.  Are you sure you didn't have a cartesian
> product that created a larger set than you anticipated?  I'd post the
> query here to see if anyone has any suggestions on that.

I'm glad to hear my soft raid md0 is no problem.

> As for the freeing inode messages, it sounds like something is
> causeing file system corruption, and my first suspect is always memory
> / hardware issues.  Have you run memtest86 on that machine to make
> sure it's got good memory etc.?

I do have some weird every few days error where the soft raid blocks for
a couple of seconds and I get this kernel log output:

Jul  7 19:58:55 server kernel: [40336.000239] ata1.00: status: { DRDY }
Jul  7 19:58:55 server kernel: [40336.000244] ata1.00: cmd
61/08:a0:a7:44:21/00:00:00:00:00/40 tag 20 ncq 4096 out
Jul  7 19:58:55 server kernel: [40336.000245]          res
40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout)

This an experimental machine, an old(er) Dell PowerEdge 800. I haven't
had the time to look into this. Any thoughts?

Thanks!
Dirk

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