[TAG] writing to an NFS share truncates files

[Ramon van Alteren]

Forgot to mention:

There's nothing in syslog in either case (loopback mount or remote  
machine mount or server)

We're using reiserfs 3 in case you're wondering.
It's a raid-50 machine based on two raid-50 arrays of 4,55 Tb handled  
by the hardware controller.

The two raid-50 arrays are "glued" together using LVM2:

--- Volume group ---
   VG Name               data-vg
   System ID
   Format                lvm2
   Metadata Areas        2
   Metadata Sequence No  2
   VG Access             read/write
   VG Status             resizable
   MAX LV                0
   Cur LV                1
   Open LV               1
   Max PV                0
   Cur PV                2
   Act PV                2
   VG Size               9.09 TB
   PE Size               4.00 MB
   Total PE              2384134
   Alloc PE / Size       2359296 / 9.00 TB
   Free  PE / Size       24838 / 97.02 GB
   VG UUID               dyDpX4-mnT5-hFS9-DX7P-jz63-KNli-iqNFTH

--- Physical volume ---
   PV Name               /dev/sda1
   VG Name               data-vg
   PV Size               4.55 TB / not usable 0
   Allocatable           yes (but full)
   PE Size (KByte)       4096
   Total PE              1192067
   Free PE               0
   Allocated PE          1192067
   PV UUID               rfOtx3-EIRR-iUx7-uCSl-h9kE-Sfgu-EJCHLR

   --- Physical volume ---
   PV Name               /dev/sdb1
   VG Name               data-vg
   PV Size               4.55 TB / not usable 0
   Allocatable           yes
   PE Size (KByte)       4096
   Total PE              1192067
   Free PE               24838
   Allocated PE          1167229
   PV UUID               5U0F3v-ZUag-pRcA-FHvo-OJeD-1q9g-IthGQg

--- Logical volume ---
   LV Name                /dev/data-vg/data-lv
   VG Name                data-vg
   LV UUID                0UUEX8-snHA-dYc8-0qLL-OSXP-kjoa-UyXtdI
   LV Write Access        read/write
   LV Status              available
   # open                 2
   LV Size                9.00 TB
   Current LE             2359296
   Segments               2
   Allocation             inherit
   Read ahead sectors     0
   Block device           253:3

Ramon

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