kern/131342: [nfs] mounting/unmounting of disks causes NFS to fail
Martin Birgmeier
martin at email.aon.at
Tue Feb 3 07:30:07 PST 2009
>Number: 131342
>Category: kern
>Synopsis: [nfs] mounting/unmounting of disks causes NFS to fail
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Feb 03 15:30:05 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator: Martin Birgmeier
>Release: FreeBSD 7.1-RELEASE i386
>Organization:
MBi at home
>Environment:
System: FreeBSD gandalf.xyzzy 7.1-RELEASE FreeBSD 7.1-RELEASE #0: Sun Jan 4 10:53:24 CET 2009 root at atpcdvvc.xyzzy:/usr/VOL/OBJ/FreeBSD/RELENG_7_1_0_RELEASE/src/sys/XYZZY i386
>Description:
[Please note that the email address given is not valid due to
security reasons. Just reply to the gnats entry, and I'll follow
it via the web interface.]
Machine A is serving via NFS. When unmounting (probably also
mounting) an unrelated file system on A, B will get a EPERM
error if it is simultaneously accessing files on A via NFS.
I have seen this behavior at least since 5.x, probably before.
>How-To-Repeat:
Do heavy NFS i/o from machine B to machine A, then unmount (mount)
a file system on A. B will get an error.
>Fix:
Unknown.
>Release-Note:
>Audit-Trail:
>Unformatted:
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