Veritas-bu

[Veritas-bu] bpverify(1) is a joke, is it possible to restore to /dev/null?

2006-05-15 10:23:49
Subject: [Veritas-bu] bpverify(1) is a joke, is it possible to restore to /dev/null?
From: jpiszcz.backup AT gmail DOT com (Justin Piszcz)
Date: Mon, 15 May 2006 10:23:49 -0400
Why?

I have a 2-3TB backup that I do not have another 2-3TB box to restore
to.  If I can restore to /dev/null, then I could test a restore and
the tapes integrity.

And if it does not verify all the data on the tape, how come it takes
~2hrs for each LTO2 tape?

Justin.


On 5/15/06, Steve <nbu.admin AT gmail DOT com> wrote:
>
> Bpverify does not / cant verify all of the data on the tape, this is from
> the commands guide:
>
>
> bpverify verifies the contents of one or more backups by reading the backup
> volume
>
> and comparing its contents to the NetBackup catalog. This operation does not
> compare
>
> the data on the volume with the contents of the client disk. However, it
> does read each
>
> block in the image, thus verifying that the volume is readable.
>
> Why would you want to send data to dev null, that would not perform any type
> of verification either.
>
> Steve
>
> Hope this helps
>
>
>
> On 5/15/06, Justin Piszcz <jpiszcz.backup AT gmail DOT com> wrote:
> >
> All,
>
> I ran a restore last week which was on three tapes, on the second tape
> it failed due to an I/O error, I repeated the restore and the same
> result occurred.
>
> I ran bpverify on the backup image ID and it said everything was OK,
> obviously this is not a good way to test a tape's integrity!
>
> Is there a way to restore all files to /dev/null?
>
> Justin.
>
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