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Full Discussion: Backup on Tape
Operating Systems AIX Backup on Tape Post 302287848 by frank_rizzo on Sunday 15th of February 2009 11:19:31 PM
Old 02-16-2009
ok. your backup is only ~4.5G which isnt to bad.

I have a few ideas for you

1) please post the output of
Code:
lsattr -El rmt0

2) change the block_size of rmt0 to 1024 if it is listed as 512 and rerurn the backup. add the -b 200 option to mksysb.
Code:
chdev -l rmt0 -a block_size=1024

3) if the compress attribute is no, then check it to yes and re-run the backup.
Code:
chdev -l rmt0 -a compress=yes

4) if 2 or 3 don't apply then I would suggest that you exclude the /ml-fixes file system from your backup. This should reduce the backup time by almost 50%. You can always backup that file system with another method without slowing down the mksysb backup or worse case a system restore. re-run the backup and report the times if this is ok.
echo /ml-fixes >> /etc/exclude.rootvg
 

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VGCFGRESTORE(8) 					      System Manager's Manual						   VGCFGRESTORE(8)

NAME
vgcfgrestore - restore volume group descriptor area SYNOPSIS
vgcfgrestore [-d|--debug] [-f|--file filename] [-l[l]|--list] [-h|--help] [-M|--Metadatatype1|2] [-t|--test] [-v|--verbose] VolumeGroupName DESCRIPTION
vgcfgrestore allows you to restore the metadata of VolumeGroupName from a text backup file produced by vgcfgbackup. You can specify a backup file with --file. If no backup file is specified, the most recent one is used. Use --list for a list of the available backup and archive files of VolumeGroupName. OPTIONS
-l | --list -- List files pertaining to VolumeGroupName List metadata backup and archive files pertaining to VolumeGroupName. May be used with the -f option. Does not restore Vol- umeGroupName. -f | --file filename -- Name of LVM metadata backup file Specifies a metadata backup or archive file to be used for restoring VolumeGroupName. Often this file has been created with vgcfg- backup. See lvm for common options. REPLACING PHYSICAL VOLUMES
vgdisplay --partial --verbose will show you the UUIDs and sizes of any PVs that are no longer present. If a PV in the VG is lost and you wish to substitute another of the same size, use pvcreate --restorefile filename --uuid uuid (plus additional arguments as appropriate) to initialise it with the same UUID as the missing PV. Repeat for all other missing PVs in the VG. Then use vgcfgrestore --file filename to restore the volume group's metadata. SEE ALSO
lvm(8), vgcreate(8) Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) VGCFGRESTORE(8)
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