Hi Folks:
I'm looking at backups - simple backups right now.
We have a strategy where an old computer is mounted with a large
external, removable hard drive. Directories - large directories -
that we have on our other production servers are mounted on this
small computer via NFS. A cron job then does a simple "cp" from the
NFS mounted production drive partitions to to the large, external,
removable hard drive.
I thought it was an elegant solution, myself, except for one small,
niggling detail.
It doesn't work.
The process doesn't copy all the files. Oh, we're not having a
problem with file locks, no. When you do a "du -sh <directory>"
comparison between the /scsi/web directory on the backup drive and
the production /scsi/web directory the differences measure in the GB.
For example my production /scsi partition has 62GB on it. The most
recently done backup has 42GB on it!
What our research found is that the cp command apparently has a limit
of copying 250,000 inodes. I have image directories on the webserver
that have 114,000 files so this is the limit I think I'm running into.
While I'm looking at solutions like Bacula and Amanda, etc., I'm
wondering if RSYNCing the files may work. Or will I run into the
same limitation?
Any thoughts?
---
Richard 'Doc' Kinne, [KQR]
American Association of Variable Star Observers
<rkinne @ aavso.org>
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