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Backup on Tape

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Operating Systems AIX Backup on Tape
# 8  
Old 02-17-2009
Quote:
Originally Posted by salmanucit
Hi,
Please take a look ath the output of my backup command with verbose. I have saved the log in two files, log1.txt and log2.xtx

Thanks
Salman
Hi,

I am not expert but when I checked your log4.txt file found something doubtfull. I am not sure this should be like this or not.

Quote:
0512-038 mksysb: Backup Completed Successfully.

bosboot: Boot image is 32804 512 byte blocks.

Verifying readability...

New volume on /dev/rmt0.1:
Why it mentioned /dev/rmt0.1. rmt0.1 means use rmt0 in append mode right ?
# 9  
Old 02-17-2009
Hi,
No it is not appending. It is reuseing the tape againd and again on each backup occurrence, overwriting the previous backup.
Thanks

Salman
# 10  
Old 02-17-2009
The /dev/rmt0.1 is the non-rewind device of the tape drive rmt0 and has nothing to do with your problems as when the tape is ejected it will be rewound anyway. I will have a look at what you have said in the past and see if there is something I have missed.
# 11  
Old 02-17-2009
Hi,
Thanks john, I will wait for your help

Salman
# 12  
Old 02-17-2009
Not knowing anything about the different environments I cannot comment on why the mksysb from one system takes a lot longer than the other. So many factors can effect the way a mksysb is run. This could be as simple as the SCSI device the tape drive is attached to or the data rate at which the data is written to the tape. All you need to worry about is whether the mksysb completes without errors!

Also a check in the error log to see if there are any failures against the rmt0 tape drive.

Try the command lsvg rootvg and check the total used PPs and post the result here.

Another important fact to take into account is this is a mksysb so it is not wise to exclude anything as the system might be unstable when re-built.
# 13  
Old 02-17-2009
Hi,
Folowing is the result of the commadn you asked to execute
Code:
rootvg: 
LV NAME             TYPE       LPs     PPs     PVs  LV STATE      MOUNT POINT 
hd5                 boot       1       2       2    closed/syncd  N/A 
fslv00              jfs2       16      16      1    open/syncd    /ml-fixes 
hd8                 jfs2log    1       2       2    open/syncd    N/A 
hd4                 jfs2       2       4       2    open/syncd    / 
hd2                 jfs2       32      64      2    open/syncd    /usr 
hd9var              jfs2       1       2       2    open/syncd    /var 
hd3                 jfs2       4       8       2    open/syncd    /tmp 
hd1                 jfs2       1       2       2    open/syncd    /home 
hd10opt             jfs2       1       2       2    open/syncd    /opt 
hd11admin           jfs2       1       2       2    open/syncd    /admin 
pridumplv           sysdump    8       8       1    open/syncd    N/A 
secdumplv           sysdump    8       8       1    open/syncd    N/A 
paging00            paging     16      16      1    open/syncd    N/A 
paging01            paging     16      16      1    open/syncd    N/A 
paging02            paging     16      16      1    open/syncd    N/A 
paging03            paging     16      16      1    open/syncd    N/A 
paging04            paging     16      16      1    open/syncd    N/A 
paging05            paging     16      16      1    open/syncd    N/A

My concern is the size of the backup, not the time it is taking.
See the result bellow of command "listvgbackup -l -f '/dev/rmt0'" and have a look at the size of backup in output
Code:



# listvgbackup -l -f '/dev/rmt0'
VOLUME GROUP:           rootvg
BACKUP DATE/TIME:       Thu Feb 12 10:05:07 GMT+08:00 2009
UNAME INFO:             AIX sapsvr03 1 6 0000DAE2D900
BACKUP OSLEVEL:         6.1.1.0
MAINTENANCE LEVEL:      6100-01
BACKUP SIZE (MB):       27648
SHRINK SIZE (MB):       19337
VG DATA ONLY:           no

rootvg:
LV NAME             TYPE       LPs     PPs     PVs  LV STATE      MOUNT POINT
hd5                 boot       1       2       2    closed/syncd  N/A
fslv00              jfs2       16      16      1    open/syncd    /ml-fixes
hd8                 jfs2log    1       2       2    open/syncd    N/A
hd4                 jfs2       2       4       2    open/syncd    /
hd2                 jfs2       32      64      2    open/syncd    /usr
hd9var              jfs2       1       2       2    open/syncd    /var
hd3                 jfs2       4       8       2    open/syncd    /tmp
hd1                 jfs2       1       2       2    open/syncd    /home
hd10opt             jfs2       1       2       2    open/syncd    /opt
hd11admin           jfs2       1       2       2    open/syncd    /admin
pridumplv           sysdump    8       8       1    open/syncd    N/A
secdumplv           sysdump    8       8       1    open/syncd    N/A
paging00            paging     16      16      1    open/syncd    N/A
paging01            paging     16      16      1    open/syncd    N/A
paging02            paging     16      16      1    open/syncd    N/A
paging03            paging     16      16      1    open/syncd    N/A
paging04            paging     16      16      1    open/syncd    N/A
paging05            paging     16      16      1    open/syncd    N/A

Thanks
# 14  
Old 02-17-2009
Not lsvg -l rootvg just lsvg rootvg.
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