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02-15-2012 09:58 AM - edited 02-15-2012 10:00 AM
02-15-2012 09:58 AM - edited 02-15-2012 10:00 AM
Can not rewind mt command
Hi,
I have a MSL4048 LTO5 with HPUX 11.31. The MSL has two drives
tape 5 64000/0xfa00/0x18 estape CLAIMED DEVICE HP Ultrium 5-SCSI
/dev/rtape/tape5_BEST /dev/rtape/tape5_BESTn
/dev/rtape/tape5_BESTb /dev/rtape/tape5_BESTnb
tape 6 64000/0xfa00/0x1c estape CLAIMED DEVICE HP Ultrium 5-SCSI
/dev/rtape/tape6_BEST /dev/rtape/tape6_BESTn
/dev/rtape/tape6_BESTb /dev/rtape/tape6_BESTnb
and one autocharger
autoch 4 64000/0xfa00/0x1d eschgr CLAIMED DEVICE HP MSL G3 Series
/dev/rchgr/autoch4
This device is connected by SAN to SAN switch.
I can do backup and restore with data protector, and I can to load and unload tape with mc command. But I can not to rewind tape. I execute mt command with the tape loaded in drive:
# mt -f /dev/rtape/tape5_BESTnb rew
and I obtain the error:
/dev/rtape/tape5_BESTnb: No such device or address
Why ? If I can to use the device with Data Protector and I dont have any problem, and If I can load and unload tapes in drives, why I can not rewind the medium??
Operating System: HPUX 11.31
PHKL_36312 estape path.
Bundle 0803
Thanks,
Jesus
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02-21-2012 07:43 PM
02-21-2012 07:43 PM
Re: Can not rewind mt command
Maybe you checked this, but I've gotta ask... of the two drives, you're using the drive which has the tape loaded?
Do you get the same result when running mt using tape6_BESTnb?
To see which tape drive is loaded, run the mt status command against both of your tape drives.
mt -f /dev/rtape/tape5_BESTnb stat
mt -f /dev/rtape/tape6_BESTnb stat
If no tape is loaded, I'd expect it to return "on tape open: no such device or address". The one with the tape loaded should return some info.
-denver
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02-24-2012 11:25 AM
02-24-2012 11:25 AM
Re: Can not rewind mt command
Please post the output of "ls -l /dev/rtape/".
If the device is not there, try to install the device file using "insf -e".
In DP, media agent maybe in some other server. Otherwise, the path for the drive might be some other name.
If it is not a critical one, remove the tape drive and re-install it by the below mentioned commands.
rmsf -a -H <H/W path>(not virtual one)
ioscan -fnC tape
*-don't remove 2 H/W paths at the same time, you may not know that which drive belongs to which special file.
Arockiasamy K