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Subject[2.2.11] mount process blocked in nfs mount
From
Date
Hi,

We frequently get blocked mount processes when trying to mount from
our CD jukebox running Solaris 2.6.

The mount process is blocked uninteruptible in WCHAN end and never
times out. All subsequent (u)mounts then block on down_failed.

This happens with (at least) 2.2.9 - 2.2.11-ac2.

I append a tcpdump of the mount request.

Greetings
Christoph
10:14:45.649435 155.56.95.75.1010 > uscd02.sunrpc: udp 56
10:14:45.651621 uscd02.sunrpc > 155.56.95.75.1010: udp 28 (DF)
10:14:45.651934 155.56.95.75.1011 > uscd02.32779: S 3133392491:3133392491(0) win 32120 <mss 1460,sackOK,timestamp 58200[|tcp]> (DF)
10:14:45.653322 uscd02.32779 > 155.56.95.75.1011: S 2726857217:2726857217(0) ack 3133392492 win 10136 <nop,nop,timestamp 559235890 58200,nop,[|tcp]> (DF)
10:14:45.653546 155.56.95.75.1011 > uscd02.32779: . ack 1 win 32120 <nop,nop,timestamp 58200 559235890> (DF)
10:14:45.653988 155.56.95.75.1011 > uscd02.32779: P 1:133(132) ack 1 win 32120 <nop,nop,timestamp 58200 559235890> (DF)
10:14:45.654361 uscd02.32779 > 155.56.95.75.1011: . ack 133 win 10004 <nop,nop,timestamp 559235890 58200> (DF)
10:14:45.662871 uscd02.32779 > 155.56.95.75.1011: P 1:65(64) ack 133 win 10136 <nop,nop,timestamp 559235891 58200> (DF)
10:14:45.663109 155.56.95.75.1011 > uscd02.32779: . ack 65 win 32120 <nop,nop,timestamp 58201 559235891> (DF)
10:14:45.663383 155.56.95.75.1013 > uscd02.sunrpc: udp 56
10:14:45.665396 uscd02.sunrpc > 155.56.95.75.1013: udp 28 (DF)
10:14:45.665664 155.56.95.75.1011 > uscd02.32779: F 133:133(0) ack 65 win 32120 <nop,nop,timestamp 58201 559235891> (DF)
10:14:45.665972 uscd02.32779 > 155.56.95.75.1011: . ack 134 win 10136 <nop,nop,timestamp 559235892 58201> (DF)
10:14:45.666285 uscd02.32779 > 155.56.95.75.1011: F 65:65(0) ack 134 win 10136 <nop,nop,timestamp 559235892 58201> (DF)
10:14:45.666485 155.56.95.75.1011 > uscd02.32779: . ack 66 win 32120 <nop,nop,timestamp 58201 559235892> (DF)
10:14:45.734686 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:14:46.427902 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:14:47.827923 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:14:50.627991 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:14:56.228147 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:14:57.628140 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:15:00.428205 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:15:06.028683 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:15:08.828391 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:15:14.428521 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:15:20.028635 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:15:26.028786 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:15:32.028906 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:15:38.029044 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:15:44.029173 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:15:50.029309 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:15:56.029452 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:16:02.029581 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:16:08.029726 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:16:14.029851 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:16:20.029985 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:16:26.030131 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:16:32.030257 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:16:38.030398 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:16:44.030527 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:16:50.030660 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:16:56.030803 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:17:02.030932 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:17:08.031063 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:17:14.031196 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:17:20.031338 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:17:26.031489 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:17:32.031605 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:17:38.031742 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
10:17:44.031877 155.56.95.75.14708860 > uscd02.nfs: 128 getattr [|nfs]
[neverending getattr calls...]
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