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On Wednesday January 29, mikpe@csd.uu.se wrote: > Neil Brown writes:> > On Wednesday January 29, mikpe@csd.uu.se wrote:> > > Kernel 2.5.59. A local ext2 file system is mounted at $MNTPNT > > > and exported through NFS V3. A client mounts and unmounts it, > > > w/o any I/O in between. The NFS server is shut down. Nothing in > > > user-space refers to $MNTPNT.> > > > > > The bug is that $MNTPNT now can't be unmounted. umount fails with > > > "device is busy". A forced umount at shutdown fails with "device > > > or resource busy" and "illegal seek", and leaves the underlying > > > fs marked dirty. > > > > > > I can't say exactly when this began, but the problem is present > > > in 2.5.59 and 2.5.55. 2.4.21-pre4 does not have this problem.> > > > How do you shut down the nfs server?> > /etc/rc.d/init.d/nfs stop> which basically does a kill on rpc.mountd, nfsd, and rpc.quotad > (standard RH8.0 user-space)> > I've checked that all *nfs* processes are gone.> > > Is anything in /proc/fs/nfs/export after the shutdown?> > Except for the two header lines, it's empty. Ok, it defaintely sounds like a leak. I'll be back at my desk on Monday and I will try to reproduce it and explore the situation then. NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
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