Subject: kern/29881: umount stale NFS volume blocks deadly
To: None <kern-bug-people@netbsd.org, gnats-admin@netbsd.org,>
From: Denis Lagno <dlagno@rambler.ru>
List: netbsd-bugs
Date: 04/04/2005 18:29:00
>Number: 29881
>Category: kern
>Synopsis: umount stale NFS volume blocks deadly
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Mon Apr 04 18:29:00 +0000 2005
>Originator: Denis Lagno
>Release: NetBSD 2.99.16
>Organization:
>Environment:
System: NetBSD chup.gado 2.99.16 NetBSD 2.99.16 (CHUP) #0: Sun Mar 13 11:50:19 MSK 2005 dina@chup.gado:/flam/volatile/worksrc/netbsd-current/src/sys/arch/i386/compile/CHUP i386
Architecture: i386
Machine: i386
>Description:
I mount NFS volume, then for some reason I lose the network. Then umount this volume just blocks.
So if I reboot, it stops in "Unmounting file systems" and no progress ever seen.
Second similar problem: if I mount NFS volume, then at server side exported directory
gone. Then mounted volume cannot be umounted. umount -f gives error:
# umount -fv /flam/stuffy
/stuffy: unmount from /flam/stuffy
umount: /flam/stuffy: Invalid argument
>How-To-Repeat:
Mount NFS volume, lose connection to NFS server and try to reboot, or simply umount volume.
>Fix:
N/A