* Scott Sanders <[EMAIL PROTECTED]> (Tue, Jul 23, 2002 at 09:47:02AM
-0600)
> So assuming I know what tape has a level 0 of my root file system, what might
> the commands look like to retstore that file system. I'm running Solaris and
> as I said use tar for the backups. I don't need specifics as I know a lot of
> people on the list are running Linux but the commands in general would be
> great!
On solaris,
booting from the boot CD should be enough (provided the tapedrive did not
require kernel patches ;).
I've sucesfully restored a large section of / (including a new kernel )
using a boot CD and a tapedrive on my amanda server.
step 1:
boot from boot CD [D'oh]
step 2:
figure out what the ID of your tapedrive is
(my drive used to be /dev/rmt/3 becuase I'd swapped drives around, but
when booting from CD the drive became /dev/rmt/1 again.
doing mt -f /dev/rmt/3 status and getting a no such device error message
back is a nice way to check your bloodpressure ;) )
step 3:
locate the tape with the last 0 dump from the root partition
[this assumes you are printing labels with all your tapes,
and (optionally) that your tape listign also shows you which tapeimage
is which dump]
step 4:
figure out which tapeimage is your 0dump,/
[say image 15]
step 5:
position tape to that image
mt -f /dev/rmt/1n fsf 15
^
+-----> note the n, you want the no rewind device
step 6:
figure out how to restore the tape.
Amanda kindly writes this information in block 1 of the tapeimage
dd if=/dev/rmt/1 bs=32k count=1
which will tell you something like (example snatched from
http://www.backupcentral.com/amanda-24.html)
AMANDA: FILE 19981206 pete.cc.purdue.edu / lev 1
comp N program /usr/sbin/ufsdump
To restore, position the tape at start of file and run:
# dd if=$TAPE bs=32k skip=1 | /usr/sbin/ufsrestore -f... -
step 7:
rewind tape and reposition:
mt -f /dev/rmt/1 rewind; mt -f /dev/rmt/1n fsf 15
dd if=/dev/rmt/1 bs=32k skip=1 | /usr/sbin/ufsrestore -f -
Kind regards,
--
Gerhard den Hollander Phone :+31-10.280.1515
Global IT Support manager Direct:+31-10.280.1539
Jason Geosystems BV Fax :+31-10.280.1511
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