Date: Wed, 20 Feb 2002 10:42:23 -0700 (MST)
From: Craig Loomis
Subject: Re: 2.5m obslog 20020219 (MJD 52325)
  In additional to the multiple murmur logs, each of the
/skycat/oplogs/astrolog/MJD/ directories holds an oldMurmur.tar file, which
appears to hold astroda and murmur logs from the previous night.  The contents
of the tar file are often duplicated and/or unused files which don't appear in
the previous night's directory. e.g.:
me$ tar tvf 52320/oldMurmur.tar
rw-rw-r-- 8237/3532       7335932 Feb 14 06:16 2002 /skycat/oplogs/murmurlog/52319/astroda.v14_36.log
rw-rw-r-- 8237/3532      38834421 Feb 14 06:16 2002 /skycat/oplogs/murmurlog/52319/astroda.v14_39.log
rw-rw-r-- 8237/3532       5367764 Feb 14 06:16 2002 /skycat/oplogs/murmurlog/52319/astroda.v14_39a.log
rw-rw-r-- 8237/3532        589680 Feb 14 06:16 2002 /skycat/oplogs/murmurlog/52319/astroda.v14_40.log
rw-rw-r-- 8237/3532      14546420 Feb 14 06:16 2002 /skycat/oplogs/murmurlog/52319/astroda.v14_41.log
rw-rw-r-- 8237/3532        547847 Feb 14 06:16 2002 /skycat/oplogs/murmurlog/52319/astroda.v14_42.log
rw-rw-r-- 8237/3532       7336016 Feb 14 06:16 2002 /skycat/oplogs/murmurlog/52319/iop.murmur.log
rw-rw-rw- 2525/3532       8462110 Feb 14 15:28 2002 /skycat/oplogs/murmurlog/52319/murmur.15:16:24Feb132002.log
rw-rw-r-- 8237/3532             0 Feb 14 06:16 2002 /skycat/oplogs/murmurlog/52319/murmur.log
rw-rw-r-- 8237/3532         43906 Feb 14 06:16 2002 /skycat/oplogs/murmurlog/52319/sd1.log
  That 38M astroda.v14_39 file has appeared unchanged in all the tar files
since Dec. 4. astroda.v14_36 appears to be the active log around 52320 (it is the one
that grows from night to night). I have occasionally wondered how the astroda
log differs from the iop.murmur.log...
  These tar files take up 15G, or ~half the disk space. And if we really are
keeping all the /astrolog/contents spinning for the duration of the survey,
the tar files should not be necessary and /astrolog directories should not be
deleted.
 - craig
> Around 1037Z we got a warning about /skycat disk space. It is 99%
> full.  Since we got more disk space last year, /astrolog and /skycat
> has been on a disk called /d1. So actually, it is /d1 that became 99%
> full. We (observers) has been bad in cleaning up /astrolog  directory
> daily and there are way over hunderd MJD directories. I got rid of 100+
> directories, but there are still room for cleaning up. I will leave
> complete clean up tomorrow afternoon. I don't trust myself enough to do
> it at this time of the night.  Meanwhile, Eric has done some cleaning
> up in /skycat because he knew that under current endNight, we end up
> having three copies of murmur log per night  living in /skycat.
> Together, we have deleted more than enough space (78% full) so that we
> don't run out of disk space.  Eric filed a PR against endNight so that
> we don't end up having three copies of murmurlog. We are aware that if
> this is not done soon and if the duplicate copies of the murmurlogs are
> not removed from the /skycat, we will run out of disk space befoore the
> survey is over. (/skycat was supposed to hold all non-TPM/MCP logs and
> par files until the end of the survey).