Bug 523201

Description of problem:
I regularly receive on the console these kind of messages:

"Message from syslogd@ at Mon Sep 14 15:07:41 2009 ...
gizeh kernel: This should not happen.!! Data will be lost
Message from syslogd@ at Mon Sep 14 15:07:48 2009 ...
gizeh kernel: mpage_da_map_blocks block allocation failed for inode 409873 at logical offset 0 with max blocks 7 with error -122
"

Version-Release number of selected component (if applicable):
$ rpm -q e4fsprogs
e4fsprogs-1.41.5-3.el5
 uname -a 
Linux gizeh.int-evry.fr 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:48 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux

How reproducible:
Often, every minutes , sometimes seconds ...


Steps to Reproduce:
1. let NFS , samba service operational on ext4 filesystems, hundred of users
2.
3.
  
Actual results:

Message from syslogd@ at Mon Sep 14 15:07:41 2009 ...
gizeh kernel: This should not happen.!! Data will be lost

but for now , no one reported data loss ... anyway I'am afraid of having users comming back with requests for backups ...

Expected results:

no error message !

Additional info:
These ext4 filsystem are located on an atteached iscsi storage disk
it used LVM and have quotas .
here's a result of the mount command in order to show mount options and devices:

[root@gizeh ~]
$ mount
/dev/mapper/VolGroup00S2IA-LogVol00 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/mapper/VolGroup00S2IA-LogVol01 on /usr type ext3 (rw)
/dev/mapper/VolGroup00S2IA-LogVol03 on /usr/local type ext3 (rw)
/dev/mapper/VolGroup00S2IA-LogVol02 on /var type ext3 (rw)
/dev/mapper/VolGroup00S2IA-LogVol05 on /tmp type ext3 (rw)
/dev/sda1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
/dev/mapper/VolGroup01S2ia-LVVG01Users01 on /disk01 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup01S2ia-LVVG01Users02 on /disk02 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup01S2ia-LVVG01Users03 on /disk03 type ext3 (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup02S2IA-LVVG02Users07 on /disk07 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup02S2IA-LVVG02Users08 on /disk08 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup02S2IA-LVVG02Users09 on /disk09 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup03S2IA-LogVolS2ia01 on /disk00 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup03S2IA-LVVG03Users13 on /disk13 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup03S2IA-LVVG03Users14 on /disk14 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup03S2IA-LVVG03Users15 on /disk15 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup04S2IA-LVVG04Users19 on /disk19 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup04S2IA-LVVG04Users20 on /disk20 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
/dev/mapper/VolGroup04S2IA-LVVG04Users21 on /disk21 type ext4dev (rw,_netdev,acl,usrquota,grpquota)
nfsd on /proc/fs/nfsd type nfsd (rw)
/disk19/artemis/zaharia on /mci/artemis/zaharia type none (rw,bind)
/disk09/em0912/hariss_e on /mci/em0912/hariss_e type none (rw,bind)
/disk14/msc2009/balassou on /mci/msc2009/balassou type none (rw,bind)


perhaps related to https://bugzilla.redhat.com/show_bug.cgi?id=515529 ?