Public bug reported:
I've got a 12.04 precise client with lots of mounts like this.
morgul:/n2 on /n2 type nfs
(ro,udp,nolock,vers=4,addr=192.168.10.212,clientaddr=192.168.10.216)
morgul:/n1 on /n1 type nfs
(ro,udp,nolock,vers=4,addr=192.168.10.212,clientaddr=192.168.10.216)
Periodically, they all lock up, stuck until reboot. Some processes (df)
stuck like that respond to ctrl-C, others don't (ls)
Networking is fine, and interestingly I can remount the export from the
server on another path on the same client and the new mount works fine,
while all the old ones are still stuck. No useful messages in syslog.
The server is runnig oneiric, 64 bit.
This seems like a recurrence of NFS bugs that people have reported
before, which have been claimed to be fixed. Its clearly not. I get it
randomly after transferring a few GB of data. (mythtv playback)
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-25-generic 3.2.0-25.40
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Uname: Linux 3.2.0-25-generic i686
NonfreeKernelModules: fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu8
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: ALC888 Analog [ALC888 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path',
'/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p',
'/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c',
'/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', '/dev/snd/seq', '/dev/snd/timer']
failed with exit code -15:
Card0.Amixer.info:
Card hw:0 'SB'/'HDA ATI SB at 0xfe7f4000 irq 16'
Mixer name : 'Realtek ALC888'
Components : 'HDA:10ec0888,10ec0888,00100001'
Controls : 16
Simple ctrls : 8
Card1.Amixer.info:
Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfe9e8000 irq 19'
Mixer name : 'ATI RS690/780 HDMI'
Components : 'HDA:1002791a,00791a00,00100000'
Controls : 4
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Wed Jul 4 23:57:28 2012
HibernationDevice: RESUME=UUID=c726b220-d3ec-476b-af1e-e1cf033eeb20
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-25-generic
root=UUID=4db66c39-60c5-41f4-9d1c-837976c7f8b3 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-25-generic N/A
linux-backports-modules-3.2.0-25-generic N/A
linux-firmware 1.79
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2012-06-05 (29 days ago)
dmi.bios.date: 08/20/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080015
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: To be filled by O.E.M.
dmi.board.vendor: To be filled by O.E.M.
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr080015:bd08/20/2010:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnTobefilledbyO.E.M.:rnTobefilledbyO.E.M.:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 precise
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https://bugs.launchpad.net/bugs/1021081
Title:
NFS lockup (readonly udp nfsv4 gigabit)
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