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тАО03-01-2007 06:30 AM
тАО03-01-2007 06:30 AM
Disk Wipe Utility
Thanks.
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тАО03-01-2007 08:07 AM
тАО03-01-2007 08:07 AM
Re: Disk Wipe Utility
http://unix.derkeiler.com/Mailing-Lists/Tru64-UNIX-Managers/2005-09/0050.html
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1031079 (might have to copy/paste this one if the link doesn't work)
http://forums1.itrc.hp.com/service/forums/bizsupport/questionanswer.do?threadId=374669
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тАО03-01-2007 10:03 AM
тАО03-01-2007 10:03 AM
Re: Disk Wipe Utility
dd if=/dev/zero of=/dev/rdisk/dsk0c bs=256k skip=1
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тАО03-12-2007 02:18 AM
тАО03-12-2007 02:18 AM
Re: Disk Wipe Utility
dd if=/dev/urandom of=/dev/disk/
The first disk took about a day to wipe and ended with:
/: write failed, file system is full
dd: Reached end of medium. exiting...
Should I always expect to see that? I've been wiping the second disk for about four days now and it's still not done so I'm wondering why it's taking so long. I don't remember how big the partition was compared to the first one, but I know I didn't expect it to take nearly this long.
Also, how does a lower bs affect this? Finally, what's the advantage of using the skip option?
Thanks a lot.
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тАО03-12-2007 02:49 AM
тАО03-12-2007 02:49 AM
Re: Disk Wipe Utility
>>> dd: Reached end of medium. exiting...
>>> Should I always expect to see that?
I think that you are not using the right device because:
1 - If you don't use the skip option, you should get an error. Tru64 won't allow write to the firsts blocks of the device so you must skip them.
2- You get a message "/: write failed, file system is full". When you write to write devices, you don't write to file systems, in this case the message is indicating that you are writing to a file system, this should mean that the device name you specified is incorrect and is creating a regular file in the /etc directory that is filling the root file system.
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тАО03-12-2007 05:43 AM
тАО03-12-2007 05:43 AM
Re: Disk Wipe Utility
# dd if=/dev/urandom of=/dev/disk/disk4h bs=1024k
/: write failed, file system is full
dd: Reached end of medium. exiting...
disk4h is /rman, not root; so it looks like the device is right:
[sysadmin@banyan: fdmns]$ ls -la rman_domain
total 16
drwxr-xr-x 2 root system 8192 Sep 26 2002 ./
drwxr-xr-x 12 root system 8192 Sep 26 2002 ../
lrwxr-xr-x 1 root system 15 Sep 26 2002 dsk4h@ -> /dev/disk/dsk4h
From what I can tell the command looks correct (except for the -skip option). Any ideas?
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тАО03-12-2007 06:58 AM
тАО03-12-2007 06:58 AM
Re: Disk Wipe Utility
:
>>> dsk4h@ -> /dev/disk/dsk4h
>> From what I can tell the command looks correct (except for the -skip option). Any ideas?
Yeah, an 'i' too much in disk4h.
The fact that / fills up proves something is wrong.
To be 100% sure I would recommend to always not only do the ls -l on the dd of target, but also to issue a 'file /dev/disk/dsk4h'
Regards,
Hein van den Heuvel