[ale] writing to tape

[Jim Kinney]

On Tue, Feb 2, 2010 at 1:47 PM, Greg Freemyer <greg.freemyer at gmail.com>wrote:

> Jim,
>
> Your reading too quick I suspect.
>

Yep. PEBKAC failure evident. Claiming failure due to errant specks on
reading glasses causing a temporal displacement of quotation mark.

>
> ssh server1 xxx | yyy
>
> says run xxx on the remote machine and pipe its output to the local process
> yyy.
>
> So effectively server1 is being backed up to a local tape drive.
>
> Greg
>
> On Tue, Feb 2, 2010 at 12:56 PM, Jim Kinney <jim.kinney at gmail.com> wrote:
> > Just a probably dumb question but why pipe a tar output to a dd? Why not
> use
> > Tape ARchiver (tar) directly to write to the tape?
> > (maybe I should reread the entire thread....)
> >
> > 2010/2/2 Björn Gustafsson <bg-ale at bjorng.net>
> >>
> >> On Mon, Feb 1, 2010 at 10:31 AM, Geoffrey <lists at serioustechnology.com>
> >> wrote:
> >> > Greg Freemyer wrote:
> >> >> What's your command line including pipes.
> >> >
> >> > ssh servername "tar -cf - $BackupThis" | dd bs=10k of=/dev/nst0
> >>
> >> I don't know if it works with GNU tar, but you might want to try the
> >> -B switch and/or to set `-b 20' to explicitly match the dd blocksize.
> >> (20 should be the default though.)
> >>
> >> After quickly checking the GNU tar manpage, it seems to indicate that
> >> -B only works for reads, but it might be worth a try anyway.
> >>
> >> --
> >> Björn Gustafsson
> >>
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> >
> >
> > --
> > --
> > James P. Kinney III
> > Actively in pursuit of Life, Liberty and Happiness
> >
> >
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> >
> >
>
>
>
> --
> Greg Freemyer
> Head of EDD Tape Extraction and Processing team
> Litigation Triage Solutions Specialist
> http://www.linkedin.com/in/gregfreemyer
> Preservation and Forensic processing of Exchange Repositories White Paper -
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>
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>
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-- 
-- 
James P. Kinney III
Actively in pursuit of Life, Liberty and Happiness
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