Networker

Re: [Networker] restore failed : staging

2009-04-15 07:42:15
Subject: Re: [Networker] restore failed : staging
From: Francis Swasey <Frank.Swasey AT UVM DOT EDU>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Wed, 15 Apr 2009 07:30:37 -0400
On 4/14/09 9:05 PM, Preston de Guise wrote:
On 14/04/2009, at 22:58 , Thierry FAIDHERBE wrote:

Do remember Adv_File supports multiple write but a single read operation.
So, if you operate a staging (disk to tape) of the device,
you cannot recover from.

To stop the staging, you have to kill the corresponding nsrstage process.

To be more accurate, the RO portion of the ADV_FILE device only supports one clone or one stage operation at once.

If only recoveries are occurring, there are no limits to the number of concurrent recoveries.

Right -- the old a read is not always a read. And why can't there be recoveries and clones running at the same time? Because a stage operation is really a clone operation followed by the deletion of the original -- and NetWorker can't tell if a clone operation is really a clone or just the first half of a stage. It's logical -- infuriating, but logical.

Bis Spater!
  Frank


Cheers,

Preston.

--
Preston de Guise


"Enterprise Systems Backup and Recovery: A Corporate Insurance Policy":

http://www.amazon.com/Enterprise-Systems-Backup-Recovery-Corporate/dp/1420076396

http://www.enterprisesystemsbackup.com

NetWorker blog: http://nsrd.wordpress.com

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--
Frank Swasey                    | http://www.uvm.edu/~fcs
Sr Systems Administrator        | Always remember: You are UNIQUE,
University of Vermont           |    just like everyone else.
  "I am not young enough to know everything." - Oscar Wilde (1854-1900)

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