Missing information as noted in
https://bugs.launchpad.net/linux/+bug/1225494/comments/3 .
** No longer affects: linux (Debian)
** Also affects: linux (Debian)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1225494
Title:
WARNING: CPU: 2 PID: 24776 at
/build/buildd/linux-3.11.0/fs/nfs/idmap.c:660
nfs_idmap_legacy_upcall+0x195/0x1b0 [nfsv4]()
Status in The Linux Kernel:
New
Status in “linux” package in Debian:
New
Bug description:
I encountered an kernel trace regarding NFS running 3.11.0-7-generic
#13-Ubuntu SMP Tue Sep 10 20:55:38 UTC 2013 x86_64 GNU/Linux under
Debian Squeeze 6.0.7 amd64 on an Opteron barebone.
This server is an NFS client using cachefilesd.
The NFS server is Debian Squeeze 6.0.7 amd64 running
3.2.0-0.bpo.4-amd64 #1 SMP Debian 3.2.46-1~bpo60+1 x86_64 GNU/Linux
and nfs-kernel-server on an Opteron barebone.
No kerberos is in use.
To get things up and running for 700+ user ids, i configured the
following on the client, using trial and error, to have the correct
user ids on the NFS mount:
echo N > /sys/module/nfs/parameters/nfs4_disable_idmapping
kernel.keys.root_maxbytes = 100000
kernel.keys.root_maxkeys = 1000
kernel.keys.maxbytes = 100000
kernel.keys.maxkeys = 1000
The trace is attached.
Thanks,
Raoul
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