On Wednesday 21 July 2010 18:26, Sterling James wrote:
>What's compression set to? I know that has other implications, also. Look
>at the makesparsefile option for restore.
>
>"Tivoli Storage Manager backs up a sparse file as a regular file if client
>compression is off. Set the compression option
> Does that imply then that a TMC backed up sparse file could not be
> restored to the same device it came off of? Would TMC attempt to
> restore
> all 26G?
Yes, and yes. Bitten by that one on Solaris too.
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backing up sparse files to minimize network transaction
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Thanks
From:
"Edmund R. MacKenty"
To:
LINUX-390@VM.MARIST.EDU
Date:
07/21/2010 04:58 PM
Subject:
Re: Files on disk
Sent by:
Linux on 390 Port
On Wednesday 21 July 2010 17:48, Dav
I might just add that despite it's manpage assertion, rsync isn't too
intelligent about it at all.
My (non z) testing indicated that if you re-use the same target file, after
the initial run "cp" is significantly more efficient. The initial run for
both is comparable as the target needs to be creat
On Wednesday 21 July 2010 17:48, Dave Jones wrote:
>Does that imply then that a TMC backed up sparse file could not be
>restored to the same device it came off of? Would TMC attempt to restore
>all 26G?
I would expect so. If it doesn't know enough to preserve the sparseness of a
file as it backs
Does that imply then that a TMC backed up sparse file could not be
restored to the same device it came off of? Would TMC attempt to restore
all 26G?
On 07/21/2010 12:14 PM, David Boyes wrote:
Sparse files. OK. Then the next question, how can I store a 26G file in
a machine that isn't that large?
Thank you all for your replies. It's clear to me, we were dumping zero's.
Regards, Berry.
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>> Sparse files. OK. Then the next question, how can I store a 26G file in
>> a machine that isn't that large?
Because sparse files are just a bunch of pointers -- the data doesn't really
exist. It's just diddling around with the directory inode.
>> And to add to this, why does the
>> filesystem
On Wednesday 21 July 2010 11:59, Berry van Sleeuwen wrote:
>Sparse files. OK. Then the next question, how can I store a 26G file in
>a machine that isn't that large? And to add to this, why does the
>filesystem backup really dump 26G into our TSM server?
Because it isn't really using 26GB of disk
RSYNC is your friend.
rsync -a -S sourcedir/. targetdir/.
where "-S" means "handle sparse files intelligently". TAR also has an
option for handling sparse files.
-- R; <><
On Wed, Jul 21, 2010 at 11:59, Berry van Sleeuwen
wrote:
> Hello Edmund,
>
> Sparse files. OK. Then the nex
Hello Edmund,
Sparse files. OK. Then the next question, how can I store a 26G file in
a machine that isn't that large? And to add to this, why does the
filesystem backup really dump 26G into our TSM server?
So it looks like the data is going somewhere.
Berry.
Op 21-07-10 15:41, Edmund R. MacKen
On Wednesday 21 July 2010 05:03, van Sleeuwen, Berry wrote:
>On a SLES8 guest we have found that file /var/log/lastlog is reported to
>be 26G. Also the /var/log/faillog is reported to be 2G. But, the /var is
>located on a 3390 model 3. So that disk, that also contains other
>directories, is only 2.
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