Using rsync should be faster too as I imagine very few of those 114k
files have actually changed. There are a few wrapper scripts for
rsync to improve the experience specifically for backups. This link
might send you down a helpful path:
http://www.google.com/search?q=rdiff-backup+vs+rsnapshot
Can't vouch for either one as I'm stuck using something dreadful for
the time being.
JL
On Jan 8, 2009, at 4:54 PM, David Allan wrote:
I think there are probably as many answers to this question as there
are members of this list, but I have found tar to be a simple and
effective solution for this sort of problem, although I can't say
I've tried it on anything approaching that number of files:
tar cf - /source/directory | ( cd /backup/directory ; tar xvf - )
Looking forward to the discussion thread,
Dave
On Thu, 8 Jan 2009, Richard 'Doc' Kinne wrote:
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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