On Friday 25 November 2005 07:56, Inaki Sanchez wrote:
>Hi,
>
>No problem doing amlabel ISR006 right now, amanda will let you do the
> backup in ISR005 or ISR006, it is up to you.
>
>I don't know which kind of tape you have, but in scsi tapes you cat do
> "mt -f /dev/nst0 compression 0" to turn hw comp off.
But because this info isn't stored on the tapes ident header block
until the tape has been written to, it won't be stored for future use
if the tape is then removed, or is read and then rewound.
This holds true even for labeling the tape due to the rewinds during
the labeling. So its best to just go ahead and label it, then
rewind
use dd to read the label block out to a scratch file someplace
rewind it again
turn off the compression with the mt command
use dd to re-write the label block saved above
use dd to write enough /dev/zero to force the drive to flush its
buffers to the media. Then the hardware compression status is saved
for future use.
>Cheers,
>
>--
>Inaki Sanchez
>
>Rodrigo Ventura wrote:
>> Hi. I have a couple of questions about amanda's behavior:
>>
>> The first one is, amadmin CONF tape says, in my case, something like
>> "The next Amanda run should go onto tape ISR005 or a new tape." If I
>> add a new tape, say label ISR006, I guess it is automatically added
>> to the amanda tape list, right? My question is, in this case, the
>> next tape to be used in amdump is ISR005 or ISR006?
>>
>> I'd like to not disrupt the tape sequence, i.e. I prefer
>> ISR001 -> ISR002 -> ... -> ISR004 -> ISR005 -> ISR006 -> ISR001 ->
>> ... rather than
>> ISR001 -> ISR002 -> ... -> ISR004 -> ISR006 -> ISR005 -> ISR001 ->
>> ...
>>
>> In order to make this happen, do I have to wait until ISR005 get
>> dumped (tonight), and only amlabel the new tape afterwards?
>>
>> The second question is, I'd like to make sure compression is off for
>> the new tape, but amtapetype -o -c -f /dev/tape refuses to work:
>>
>> "amtapetype: /dev/tape: reading label: Input/output error"
Thats probably because there isn't a valid amanda label on the tape
yet. But it could also be a block size miss-match, amanda isn't quite
as verbose as could be in that case.
>> Do I have to amlabel it? However, I'd like to do so only after being
>> sure ISR006 is used next to the ISR005 one.
>>
>> And a final question: anyone thinking about re-doing an amanda
>> survey? I noticed the last one was done circa 2003, so it's a bit
>> old... (I guess I wasn't using amanda back then yet...)
>>
>> Cheers,
>>
>> Rodrigo Ventura
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
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-Ed Howdershelt (Author)
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Copyright 2005 by Maurice Eugene Heskett, all rights reserved.
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