Bob Zahn wrote:
> I'm needing to backup a Windows 2K server that has a large 46+GB
> shared 'D$' drive. This disk contains an application that has many
> little files and even under the best circumstances with purchased
> backup software it will take 30 to 36 hours to backup. I've managed
> to get this to 21 hours using a combination of Amanda-2.4.4,
> Samba-2.2.8a, and gnutar-1.13.25 to back up this beast. However, this
Be aware than when using samba to backup a PC, you're in fact not
using gnutar at all; you use the built in tar in smbclient.
> is still not good enough (for management, of course). In searching
> the amanda-users and amanda-hackers archives, I found some mention
> of modifing sendsize.c to use calcsize for estimations. I don't
> really want to do this as it only effects the estimation phase for
And the estimation phase of smbclient is the superfast built in "du".
Because smbclient uses the archive bit to select files for incremental
backup, the backuplevel is 1 at most. (So the sendsize only has
to count for level 0 and level 1; while for normal gnutar sendsize
could ask for level 0, level n and level n+1.)
> planner. I was hoping to use include or exclude options of gnutar but
> samba will not really play well in this game. I tried to divide the
> large shared drive into directories using the include option in both
> the disklist and in the dumptypes. Samba complains about this and
The builtin tar in smbclient does not know about "include".
> gives error messages and quits. Then I tried using ex! clude. Samba
> will be ok with this option as long as you just exclude only one file
> or directory. This is not a good option either as I have many files
> or patterns I want to exclude (i.e.,./pagefile.sys, */*.tmp, or
> */*.zip). So, I thought of installing cygwin on this W2K machine with
> amanda client and trying this configuration. I am working through
> this implementation currently and am having some problems (I did get
> the host server to talk to the w2k, cygwin, amanda client machine,
> but had to stop at this point and got pulled off onto another
> project). My thought was I could at least bypass Samba and just use
> gnutar to backup the W2K client machine using exclude lists or files.
> Has anyone done this or something similar? If so, can you give me
> some advice on the best way to accomplish my objective - backing up
> large W2K shared partitions in the shortest time possible. Thanks in
> advance. Bob...
I stood once for the same problem, but I reversed the solution.
I installed the files on a large Linux reiserfs (very good for zillion
small files), and I do my backups using gnutar.
The filesystem is shared with samba to the server that uses it.
My backup time went down from over 5 hours to 1 hour 20 minutes for a
full dump. Estimate time went down from 2 hours to 20 minutes.
This was long before the cygwin port became available. So I never
tried that path. It could be a valid path too. I'm interested
in the result.
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