Media position error occurs after retry?
Mostly it occurs by chance. First clean drive and retry.
If it occurs again, see /var/adm/messages and check error from st driver.
st driver report "Media Error" or so on when error occurs in drive. And check SCSI error.
No error reported in /var/adm/messages, the medium format may be wrong.
*** I recommend you to use bpverify. This is easy way. ***
But if you want to check paranoically, compare file lists by following step.
1. bpimagelist shows what backup-id is placed on medium. The information is picked up from catalog.
# bpimmedia -mediaid HZQ308 -U -d 01/01/1970
Backup-ID Policy Type RL Files C E T PC Expires
Copy Frag KB Type Density FNum Off Host DWO MPX Expires RL MediaID
------------------------------------------------------------------------------------------------
myhost_1118148074 fun FULL 1 23 N N R 1 21:41 06/21/2005
1 1 640 RMed hcart 2 15 myhost 0 N 21:41 06/21/2005 1 HZQ308
myhost_1118147893 fun FULL 1 23 N N R 1 21:38 06/21/2005
1 1 640 RMed hcart 1 2 myhost 0 N 21:38 06/21/2005 1 HZQ308
2. bpflist shows the file list those are backuped up with the specified backup-id.The information is picked up from catalog.
# bpflist -rl 999 -U -backupid myhost_1118148074
Client: myhost
Policy: fun
Backup ID: myhost_1118148074
Backed up: Tue Jun 07 2005 21:41:14 (1118148074)
Software Version: ?
Policy Type: Standard
Schedule Type: FULL
Version: 7
Keyword: ?
Num Files: 23
Files:
FN=1 L=0 PL=9 DL=49 BK=2 II=1 RS=0 GB=0 DN=35651584 P=/var/adm/ D=16893 root sys 0 1118147899 1118081400 1118081400
FN=2 L=0 PL=15 DL=49 BK=3 II=1 RS=0 GB=0 DN=35651584 P=/var/adm/aculog D=33152 uucp bin 0 1101437112 1101437112 1101437112
:
:
FN=22 L=0 PL=18 DL=48 BK=1265 II=1 RS=0 GB=0 DN=35651584 P=/var/adm/acct/sum/ D=16893 adm adm 0 1118147943 1101443750 1101443750
FN=23 L=0 PL=12 DL=48 BK=1266 II=1 RS=0 GB=0 DN=35651584 P=/var/adm/sa/ D=16893 adm sys 0 1118147943 1101443750 1101443750
3. Mount tape by tpreq
# tpreq -m HZQ308 -a r -d hcart -p test /tmp/tape
4. Check media id by vmoprcmd or cat
# vmoprcmd
PENDING REQUESTS
DRIVE STATUS
Drv Type Control User Label RecMID ExtMID Ready Wr.Enbl. ReqId
0 hcart TLD root Yes HZQ308 HZQ308 Yes Yes 0
ADDITIONAL DRIVE STATUS
Drv DriveName Shared Assigned Comment
0 Drive0 No myhost
# mt -f /tmp/tape rew
# cat /tmp/tape
VOL1HZQ308BサThIs Is A BP tApE hEaDer
5. get file list by tar
# mt -f device asf 2 # I want to get about myhost_1118148074(FNum=2)
# mt -f device asf 1 # skip first record(image header)
# /usr/openv/netbackup/bin/tar -tvf /tmp/tape
Blocksize = 126 records
drwxr-xr-x root/root 0 May 24 10:56 2005 /
drwxr-xr-x root/sys 0 Jun 3 13:40 2005 /var/
drwxrwxr-x root/sys 0 Jun 7 03:10 2005 /var/adm/
-rw------- uucp/bin 0 Nov 26 11:45 2004 /var/adm/aculog
:
:
drwxrwxr-x adm/adm 0 Nov 26 13:35 2004 /var/adm/acct/sum/
drwxrwxr-x adm/sys 0 Nov 26 13:35 2004 /var/adm/sa/