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Re: backup tool




> Can anybody recommend a free/commercial backup tool meeting the
> following requirements:
> 
> 1. Networked
> 2. Not NFS-based.
> 3. (If rsh/rlogin/rhosts/tcp wrappers -based) Should work in an
> environment without root rlogin/rsh facilities. As a non root user,
> rsh/rlogin is guaranteed not to prompt for password.

the above mentioned requirerments may be all or partially met using dump
(it does come as part of any descent unix system, including linux).

it allows you to specify the dump device using a network-format, and you
may set permissions up so it'll not require root rsh access - just create
a dummy user on the backup server (i.e. where your tape driver resides),
and give it access for read/write to the tape, then put root from all
other machines in the .rhosts file of this specific user, and the magic
begins. one problem thought - this method doesn't support scheduling the
dump amongst the different machines (i.e. making one machine begin its
dump right after the first one finishes).

> 4. Scenario-based. Must be customizeable enough to allow to
> include/exclude various parts of the filesystem, based on scenario

dump works in the level of devices, so you have to dump a whole partition,
or not dump it at all. you may choose which paritionts to dump and in
which order, but not which part of them to dump. you do have support for
full dumps and incremental dumps, but that probably won't save the day.

> 5. Cron-friendly, so that it'd allow unattended backups.

> 	'find ... > lst; tar -T lst ...'

why are you doin gthis 'find' in the first place? just in order to allow
choosing which files to dump? or to implement 'incremental' backups?

> ... with all machines NFS-mounted to the backup server.Now tar just
> dies with return code 2 in the middle of this list (always at the very
> same file). Even hard-mounted NFS doesn't help.

another option: there is a program named 'BRU' advertised at sys.admin
magazine constantly. you may check it out..

guy


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