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#1 2012-10-01 08:47:50

bryanpaddock
Member
From: Cape Town, SA
Registered: 2012-07-03
Posts: 12

[solved] Lockup during attempted NFSv4 mount

NFS seems to be set up fine but my shares go stale very quickly after mounting. (nfsv4)

It's only begun to be more temperamental lately... before it would mount but still go stale (freeze during a directory listing)

Server displays connection attempt:

Oct  1 10:23:59 localhost rpc.mountd[12621]: authenticated mount request from 192.168.10.2:980 for /media/external (/media/external)
Oct  1 10:36:14 localhost rpc.mountd[12621]: authenticated mount request from 192.168.10.2:739 for /var/development/www (/var/development/www)

But client does not complete mount - cannot even CTRL + C it. I get these logs on the client:

Oct  1 10:42:17 mars kernel: [ 1200.279912] INFO: task python2:3668 blocked for more than 120 seconds.
Oct  1 10:42:17 mars kernel: [ 1200.279916] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Oct  1 10:42:17 mars kernel: [ 1200.279918] python2         D f3237dd4     0  3668      1 0x00000000
Oct  1 10:42:17 mars kernel: [ 1200.279923]  f3237e2c 00200086 f88221b4 f3237dd4 f8822b97 c05f8220 c06c7400 c06c7400
Oct  1 10:42:17 mars kernel: [ 1200.279930]  27e63b52 000000d7 f5c6c400 f31d74e0 af96ad46 00200202 f30ba380 00200202
Oct  1 10:42:17 mars kernel: [ 1200.279935]  f3237e24 c01b65dc df2065e1 ffffffff 572b71e1 00000000 f3237e2c c0181773
Oct  1 10:42:17 mars kernel: [ 1200.279941] Call Trace:
Oct  1 10:42:17 mars kernel: [ 1200.279973]  [<f88221b4>] ? rpc_make_runnable+0x54/0x60 [sunrpc]
Oct  1 10:42:17 mars kernel: [ 1200.279984]  [<f8822b97>] ? rpc_execute+0x27/0x90 [sunrpc]
Oct  1 10:42:17 mars kernel: [ 1200.279990]  [<c01b65dc>] ? delayacct_end+0x9c/0xb0
Oct  1 10:42:17 mars kernel: [ 1200.279996]  [<c0181773>] ? ktime_get_ts+0xc3/0xf0
Oct  1 10:42:17 mars kernel: [ 1200.280001]  [<c04c5f13>] schedule+0x23/0x60
Oct  1 10:42:17 mars kernel: [ 1200.280004]  [<c04c5fc8>] io_schedule+0x78/0xb0
Oct  1 10:42:17 mars kernel: [ 1200.280008]  [<c01e8b1d>] sleep_on_page+0xd/0x20
Oct  1 10:42:17 mars kernel: [ 1200.280011]  [<c04c3fa1>] __wait_on_bit+0x51/0x70
Oct  1 10:42:17 mars kernel: [ 1200.280014]  [<c01e8b10>] ? __lock_page+0x80/0x80
Oct  1 10:42:17 mars kernel: [ 1200.280018]  [<c01e8d06>] wait_on_page_bit+0x86/0x90
Oct  1 10:42:17 mars kernel: [ 1200.280022]  [<c01566e0>] ? autoremove_wake_function+0x50/0x50
Oct  1 10:42:17 mars kernel: [ 1200.280026]  [<c01e8e30>] filemap_fdatawait_range+0xd0/0x150
Oct  1 10:42:17 mars kernel: [ 1200.280030]  [<c01e9959>] filemap_write_and_wait_range+0x79/0x90
Oct  1 10:42:17 mars kernel: [ 1200.280043]  [<f88fb67f>] nfs_file_fsync+0x2f/0xd0 [nfs]
Oct  1 10:42:17 mars kernel: [ 1200.280055]  [<f88fb650>] ? nfs_file_splice_read+0xb0/0xb0 [nfs]
Oct  1 10:42:17 mars kernel: [ 1200.280059]  [<c025cc63>] vfs_fsync+0x33/0x50
Oct  1 10:42:17 mars kernel: [ 1200.280070]  [<f88fc2d7>] nfs_file_flush+0x47/0x60 [nfs]
Oct  1 10:42:17 mars kernel: [ 1200.280074]  [<c02326d3>] filp_close+0x33/0x80
Oct  1 10:42:17 mars kernel: [ 1200.280078]  [<c0232792>] sys_close+0x72/0xc0
Oct  1 10:42:17 mars kernel: [ 1200.280082]  [<c04ccf1f>] sysenter_do_call+0x12/0x28

Anyone know whats going on?

Last edited by bryanpaddock (2012-10-01 11:48:40)

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#2 2012-10-01 11:48:29

bryanpaddock
Member
From: Cape Town, SA
Registered: 2012-07-03
Posts: 12

Re: [solved] Lockup during attempted NFSv4 mount

Ah-ha! Solved it...

Wondershaper updated and it defaulted to rate-limit my eth0 instead of ppp0 which is normally shaped.

Limiting eth0 to 800kbps killed everything...

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