Copying data to new tapes
Hi, we used a Tandberg Superloader DLT Autoloader for offsite backups. Now I ordered a Tandberg Storageloader LTO3. Does anybody of you see a way to get the data of the old DTL to the new LTO3 tapes? Doing a 1-to-1 copy is wasting many space and money. My only idea is restore everything on the old tapes to a huge place and backup it to LTO agin, isn't it? But this would be to much work. Marc -- Marc Muehlfeld (Leitung Systemadministration) Zentrum fuer Humangenetik und Laboratoriumsmedizin Dr. Klein und Dr. Rost Lochhamer Str. 29 - D-82152 Martinsried Telefon: +49(0)89/895578-0 - Fax: +49(0)89/895578-78 http://www.medizinische-genetik.de
Re: Copying data to new tapes
Op ma 12nov07 om 15:29 schreef Marc Muehlfeld: we used a Tandberg Superloader DLT Autoloader for offsite backups. Now I ordered a Tandberg Storageloader LTO3. Does anybody of you see a way to get the data of the old DTL to the new LTO3 tapes? Doing a 1-to-1 copy is wasting many space and money. My only idea is restore everything on the old tapes to a huge place and backup it to LTO agin, isn't it? But this would be to much work. You could write serveral DLT's to one LT03, using the non-rewind device (which might be neede anyhow). Gerrit
Re: Copying data to new tapes
Gerrit A. Smit -TI- schrieb: You could write serveral DLT's to one LT03, using the non-rewind device (which might be neede anyhow). But how ll Amanda handle this later? Btw: You don't get engough mail, because you request a return receipt for your mailinglist posting? :-) -- Marc Muehlfeld (Leitung Systemadministration) Zentrum fuer Humangenetik und Laboratoriumsmedizin Dr. Klein und Dr. Rost Lochhamer Str. 29 - D-82152 Martinsried Telefon: +49(0)89/895578-0 - Fax: +49(0)89/895578-78 http://www.medizinische-genetik.de
Re: Copying data to new tapes
Marc Muehlfeld [EMAIL PROTECTED] writes: we used a Tandberg Superloader DLT Autoloader for offsite backups. Now I ordered a Tandberg Storageloader LTO3. Does anybody of you see a way to get the data of the old DTL to the new LTO3 tapes? Doing a 1-to-1 copy is wasting many space and money. My only idea is restore everything on the old tapes to a huge place and backup it to LTO agin, isn't it? But this would be to much work. When copying Amanda tapes to a larger media, I read all parts with dd as long as the capacity of the new tape is reached and then I write these parts to the new tape with dd. In order to recover you should position the tape manually (with mt), and you must disable amrecover_check_label in amanda.conf (otherwise amrecovr would rewind and see the wrong tape label at the beginning of the tape. Sven
Re: Copying data to new tapes
Sven Rudolph schrieb: In order to recover you should position the tape manually (with mt), and you must disable amrecover_check_label in amanda.conf (otherwise amrecovr would rewind and see the wrong tape label at the beginning of the tape. Sounds good. I'll try that. How do I know the filemarks later where one tape ends and the new one beginns? Do I have to track this by myself on which position which tape is stored? -- Marc Muehlfeld (Leitung Systemadministration) Zentrum fuer Humangenetik und Laboratoriumsmedizin Dr. Klein und Dr. Rost Lochhamer Str. 29 - D-82152 Martinsried Telefon: +49(0)89/895578-0 - Fax: +49(0)89/895578-78 http://www.medizinische-genetik.de
Re: Copying data to new tapes
Marc Muehlfeld [EMAIL PROTECTED] writes:
Sven Rudolph schrieb:
In order to recover you should position the tape manually (with mt),
and you must disable amrecover_check_label in amanda.conf (otherwise
amrecovr would rewind and see the wrong tape label at the beginning of
the tape.
Sounds good. I'll try that. How do I know the filemarks later where
one tape ends and the new one beginns? Do I have to track this by
myself on which position which tape is stored?
I create a listing, print it on paper and store it together with the
tape.
Sven
-
#!/bin/sh
# list_amanda_tape
usage()
{
echo $0 [--blocksize xxk] ntapedev
}
case $1 in
--blocksize)
blocksize=$2
shift; shift
;;
--*)usage 2
exit 1
;;
esac
TAPE=$1
[ -c $TAPE ] ||
{
usage 2
exit 1
}
mt -f $TAPE rewind
n=0
while line=$(dd if=$TAPE bs=32k count=1 2/dev/null | head -1 )
do
[ -n $line ] || break
printf '%03d ' $n
echo $line
mt -f $TAPE fsf
n=$((n+1))
done
mt -f $TAPE rewind
Re: Copying data to new tapes
Sven Rudolph schrieb: I create a listing, print it on paper and store it together with the tape. I'll get the new autoloader end of the week. I'll try your script then. Thanks. -- Marc Muehlfeld (Leitung Systemadministration) Zentrum fuer Humangenetik und Laboratoriumsmedizin Dr. Klein und Dr. Rost Lochhamer Str. 29 - D-82152 Martinsried Telefon: +49(0)89/895578-0 - Fax: +49(0)89/895578-78 http://www.medizinische-genetik.de
Re: Copying data to new tapes
amanda can't do it automaticaly, but it is planned. You could restore everything on the holding disk and use amflush to flush them to the new tape. amrecover will correctly works with the new tape. if your blocksize on tape is 32k, it is a simple as: cd /holding/disk/path. mkdir 20070101010101 cd 20070101010101 for all old tapes amrestore -r /device/name rm all dump that are complete. amflush You should verify the result. Jean-Louis Marc Muehlfeld wrote: Hi, we used a Tandberg Superloader DLT Autoloader for offsite backups. Now I ordered a Tandberg Storageloader LTO3. Does anybody of you see a way to get the data of the old DTL to the new LTO3 tapes? Doing a 1-to-1 copy is wasting many space and money. My only idea is restore everything on the old tapes to a huge place and backup it to LTO agin, isn't it? But this would be to much work. Marc
