How do I reinitialise a device ?

I have a tape drive that I use for backups and occasionally it fails for various reasons. I kill the process but the device (/dev/st0) is still showing up as busy (mt status). The only way I have been able to get it back up and running is by rebooting the server.

Linux Hardware 765 This topic was started by deathrider, 2002-10-23 01:20

Discussion 3

deathrider

4 Posts
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Joined 2000-06-06

#96805

2002-10-23 03:20

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Responses to this topic

punkisdead

118 Posts
Location -
Joined 2002-08-08

#96806

2002-10-29 05:03

What is your current working directory ( $PWD) when trying to umount the drive? Because if your directory is under the mount point when you try to umount it won't work..

gfolkert

64 Posts
Location -
Joined 2003-01-03

#96807

2003-01-04 05:40

a bit of sh work should fix your dilemma:

as root, do
Code:

lsof | grep -e "/dev/st0" | less

That should tell you the Process that still has the device open. If it iz zombie'd or won't die... a reboot is about the only thing you can do... Except editing memory space and hash tables manually....

But, I am guessing you are *NOT* a Expert UNIX GEEK like me with 15+ years of *NIX (DEC OSF/1, Tru64, HP-UX, Solaris, AIX, BSDi, *BSD, IRIX, SunOS, Linux... etc...) I'd be nervous doing that...

deathrider

4 Posts
Location -
Joined 2000-06-06

#96808

2003-02-05 00:59

Thanks for your comments

I am not competent enough to edit memory space or hash tables (at least at this point in time).

Looks like a reboot is the only solution for me for the time being.