Messages in this thread | | | Date | Thu, 10 Mar 2011 21:35:20 +0200 | Subject | Re: NFS regression in 2.6.37.1 (current stable) | From | Pekka Enberg <> |
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On Thu, Mar 10, 2011 at 8:53 PM, Dr Andrew John Hughes <ahughes@redhat.com> wrote: > [Please CC me on responses as I'm not subscribed] > > Hi, > > I seem to have uncovered a regression in the NFS code between 2.6.37 and 2.6.37.1 > caused by this changeset: > > commit 55ea499d60aefa3d03a77fc8590c26b5881faa92 > Author: Trond Myklebust <Trond.Myklebust@netapp.com> > Date: Sat Jan 8 17:45:38 2011 -0500 > NFS: Don't use vm_map_ram() in readdir > http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.37.y.git;a=commit;h=6650239a4b01077e80d5a4468562756d77afaa59 > > With this change applied, copying of files between NFS and non-NFS > mounts seems to be broken. The easiest way I've found to replicate > this myself is to use a VCS to do a clone of a tree on a NFS mount to > a directory on a non-NFS mount. I used Mercurial, as I had Mercurial > trees to hand from work on IcedTea, but I assume doing it with a git > tree such as the linux tree would also work. The idea is to do > something which involves copying over a bunch of directories and > checking the result is readable. > > $ hg clone $HOME/projects/openjdk/icedtea6-hg > destination directory: icedtea6-hg > updating to branch default > abort: > data/contrib/templater/hotspot/src/cpu/CPU/vm/bytecodeInterpreter_CPU.inline.hpp.i@16d04ce16287: > no match found! > > In the above, $HOME is an NFS mount and $PWD is a local reiserfs > partition. I initially hit failures doing builds with source on $HOME > and the build directory on a local reiserfs partition. In that > scenario, it would fail as not being able to find files that should > have been copied over. > > Reverting the changeset fixes the issue. 2.6.37.2 still has the bug. > I haven't checked 2.6.37.3 yet but I didn't see any NFS changes in there.
There's some more discussion here:
https://bugs.gentoo.org/show_bug.cgi?id=357121
Greg, Trond, as this is a regression in -stable, I wonder if it's best that we just revert the commit?
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