Re: xfsdump & compression? (was: Re: xfsdump aborts after assertion failure)

["Esger Abbink" <e.abbink@chello.nl>]

So, as i understand it there is no "safe" compression aside from hardware
compression while using xfsdump.

as the data volume is quite big, i really need compression. recommandations
for backup software anyone?

----- Original Message -----
From: <ivanr@sgi.com>
To: "Bernhard R. Erdmann" <be@berdmann.de>
Cc: "Esger Abbink" <e.abbink@chello.nl>; <linux-xfs@oss.sgi.com>
Sent: Monday, February 18, 2002 2:22 AM
Subject: Re: xfsdump & compression? (was: Re: xfsdump aborts after assertion
failure)


> On Sat, 16 Feb 2002, Bernhard R. Erdmann wrote:
>
> > > how do i get xfsdump to compress stuff?
>
> xfsdump does not compress stuff.
>
> > 1. use hardware compression
> > 2. xfsdump -J -F - / | gzip | dd of=$TAPE bs=32k
>
> Option 2 will nullify all of xfsdump's fault tolerance features when
> writing to tape.  In other words, if there's a tape error or you hit the
> end of tape, xfsdump can't recover.
>
> I understand of course that this might be fine for some, but many sites
> don't like to take chances with their backups.  Just thought I'd mention
> this in case it was an issue.
>
> Ivan
>
> --
> Ivan Rayner
> ivanr@sgi.com
>