Bug#434135: 2.6.21-2-vserver-686: process hangs while write(2) to NFS share

[vle@gmx.net]

Package: linux-image-2.6.21-2-vserver-686
Version: 2.6.21-2-vserver-686
Followup-For: Bug #434135

process hangs when write(2) to NFS share

###########################################################################
typescript:

0 >mount | grep /var/local/syntagma2
172.17.0.5:/var/local/syntagma2 on /var/local/syntagma2 type nfs
(rw,hard,intr,lock,addr=172.17.0.5)

0 0 >pwd
/var/local/syntagma2/artsimenya

0 >uname -a
Linux syn-proc4 2.6.21-2-vserver-686 #1 SMP Wed Jul 11 06:13:30 UTC 2007 i686
GNU/Linux

0 >strace cat < /dev/zero > tmp.tmp
execve("/bin/cat", ["cat"], [/* 72 vars */]) = 0
uname({sys="Linux", node="syn-proc4", ...}) = 0
brk(0)                                  = 0x804d000
....
read(0, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 32768) =
32768
write(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 32768
###########################################################################
and then... process 'cat' hangs (it CAN be killed by C-c).


-- System Information:
Debian Release: 4.0
  APT prefers stable
  APT policy: (990, 'stable'), (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 2.6.18-4-vserver-686 (SMP w/2 CPU cores)
Locale: LANG=ru_RU.CP1251, LC_CTYPE=ru_RU.CP1251 (charmap=CP1251)
Shell: /bin/sh linked to /bin/dash

Versions of packages linux-image-2.6.21-2-vserver-686 depends on:
ii  initramfs-tools [linux-initra 0.85g      tools for generating an initramfs
ii  module-init-tools             3.3-pre4-2 tools for managing Linux kernel mo

Versions of packages linux-image-2.6.21-2-vserver-686 recommends:
ii  libc6-i686                  2.3.6.ds1-13 GNU C Library: Shared libraries [i
ii  util-vserver                0.30.212-1   user-space tools for Linux-VServer