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Full Discussion: Mksysb and Savevg woes
Top Forums UNIX for Dummies Questions & Answers Mksysb and Savevg woes Post 302207125 by boredazfcuk on Thursday 19th of June 2008 07:30:42 AM
Old 06-19-2008
Mksysb and Savevg woes
hi,

i'm having a little trouble with an AIX 5.2 script that i have written and i was wondering if anyone could please offer me some advice on how to append a savevg backup to a mksysb tape, or more importantly where i'm going wrong? i've been trying to get this to work on and off for about a month with no joy now.

here's a cut down version of my script:
Code:
MKSYSBLOG=/usr/tmp/mksysb.log
VGLOG=/usr/tmp/vg.log
MKSYSBVLOG=/usr/tmp/mksysbv.log
VGVLOG=/usr/tmp/vgv.log

tctl -f /dev/rmt0 rewind
/usr/bin/mksysb -ipX /dev/rmt0.1 2>$MKSYSBLOG
/usr/bin/savevg -ipXf /dev/rmt0 DEV_VG 2>$VGLOG
/usr/sbin/restore -s3 -Tqvf /dev/rmt0.1 2>$MKSYSBVLOG
/usr/sbin/restore -s1 -Tqvf /dev/rmt0.1 2>$VGVLOG
tctl -f /dev/rmt0 rewind

the problem that i am having is that if i run this script i get the following error from the restore commands:

restore: 0511-160 Cannot read the backup media
/dev/rmt0.1: There is an input or output error

with the tape rewound, if i run a restore -Tvqf /dev/rmt0 it lists the files in DEV_VG. this made me think that the tape was rewinding before running the savevg command for some reason.

if i change the backups to use the rmt0 device and manually do all my rewinding and fast forwarding with tctl i get the same errors as the restore command gives me.

if i run a /usr/bin/mksysb -ipX /dev/rmt0 then a restore -Tvqf /dev/rmt0 it lists the files in the rootvg. from what i've read a mksysb should put the files on the 3rd segment of the backup. is this correct?
 

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LEARN ABOUT MOJAVE

mkdevmaps

mkdevmaps(1M)                                             System Administration Commands                                             mkdevmaps(1M)

NAME

       mkdevmaps - make device_maps entries

SYNOPSIS

       /usr/sbin/mkdevmaps

DESCRIPTION

       The  mkdevmaps  command  writes  to standard out a set of device_maps(4) entries describing the system's frame buffer, audio, and removable
       media devices.

       The mkdevmaps command is used by the init.d(4) scripts to create or update the /etc/security/device_maps file.

       Entries are generated based on the device special files found in /dev. For the different  categories  of  devices,  the  mkdevmaps  command
       checks for the following files under /dev:

       audio           /dev/audio, /dev/audioctl, /dev/sound/...
       tape            /dev/rst*, /dev/nrst*, /dev/rmt/...
       floppy          /dev/diskette, /dev/fd*, /dev/rdiskette, /dev/rfd*
       removable disk  /dev/dsk/c0t?d0s?, /dev/rdsk/c0t?d0s?
       frame buffer    /dev/fb

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+
       |Interface Stability          |Obsolete                     |
       +-----------------------------+-----------------------------+

SEE ALSO

       allocate(1), bsmconv(1M), attributes(5)

NOTES

       mkdevmaps might not be supported in a future release of the Solaris operating system.

SunOS 5.10                                                          8 Oct 2003                                                       mkdevmaps(1M)
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