zfs-fuse:

Sun Jul 10 23:38:34 [initandlisten] MongoDB starting : pid=14609
port=27017 dbpath=/var/lib9/mongodb 64-bit
Sun Jul 10 23:38:34 [initandlisten] db version v1.8.2, pdfile version
4.5
Sun Jul 10 23:38:34 [initandlisten] git version: nogitversion
Sun Jul 10 23:38:34 [initandlisten] build sys info: Linux xena 2.6.38-
hardened-r6 #3 SMP Tue Jun 21 10:32:26 CEST 2011 x86_64
BOOST_LIB_VERSION=1_42
Sun Jul 10 23:38:34 [initandlisten] journal dir=/var/lib9/mongodb/
journal
Sun Jul 10 23:38:34 [initandlisten] recover : no journal files
present, no recovery needed
Sun Jul 10 23:38:34 [initandlisten] info preallocateIsFaster couldn't
run; returning false
Sun Jul 10 23:38:34 [initandlisten] exception in initAndListen
std::exception: couldn't open file /var/lib9/mongodb/journal/j._0 for
writing errno:22 Invalid argument, terminating
Sun Jul 10 23:38:34 dbexit:
Sun Jul 10 23:38:34 [initandlisten] shutdown: going to close listening
sockets...
Sun Jul 10 23:38:34 [initandlisten] shutdown: going to flush
diaglog...
Sun Jul 10 23:38:34 [initandlisten] shutdown: going to close
sockets...
Sun Jul 10 23:38:34 [initandlisten] shutdown: waiting for fs
preallocator...
Sun Jul 10 23:38:34 [initandlisten] shutdown: lock for final commit...
Sun Jul 10 23:38:34 [initandlisten] shutdown: final commit...
Sun Jul 10 23:38:34 [initandlisten] shutdown: closing all files...
Sun Jul 10 23:38:34 closeAllFiles() finished
Sun Jul 10 23:38:34 [initandlisten] shutdown: journalCleanup...
Sun Jul 10 23:38:34 [initandlisten] removeJournalFiles
Sun Jul 10 23:38:34 [initandlisten] shutdown: removing fs lock...
Sun Jul 10 23:38:34 dbexit: really exiting now

zfs:
Sun Jul 10 23:53:04 [initandlisten] MongoDB starting : pid=22362
port=27017 dbpath=/home/mage/temp/mongodb 64-bit
Sun Jul 10 23:53:04 [initandlisten] db version v1.8.2, pdfile version
4.5
Sun Jul 10 23:53:04 [initandlisten] git version: nogitversion
Sun Jul 10 23:53:04 [initandlisten] build sys info: Linux vylie 2.6.38-
gentoo-r6 #4 SMP Thu Jun 2 11:09:40 CEST 2011 x86_64
BOOST_LIB_VERSION=1_42
Sun Jul 10 23:53:04 [initandlisten] journal dir=/home/mage/temp/
mongodb/journal
Sun Jul 10 23:53:04 [initandlisten] recover : no journal files
present, no recovery needed
Sun Jul 10 23:53:04 [initandlisten] info preallocateIsFaster couldn't
run; returning false
Sun Jul 10 23:53:04 [initandlisten] exception in initAndListen
std::exception: couldn't open file /home/mage/temp/mongodb/journal/
j._0 for writing errno:22 Invalid argument, terminating
Sun Jul 10 23:53:04 dbexit:
Sun Jul 10 23:53:04 [initandlisten] shutdown: going to close listening
sockets...
Sun Jul 10 23:53:04 [initandlisten] shutdown: going to flush
diaglog...
Sun Jul 10 23:53:04 [initandlisten] shutdown: going to close
sockets...
Sun Jul 10 23:53:04 [initandlisten] shutdown: waiting for fs
preallocator...
Sun Jul 10 23:53:04 [initandlisten] shutdown: lock for final commit...
Sun Jul 10 23:53:04 [initandlisten] shutdown: final commit...
Sun Jul 10 23:53:04 [initandlisten] shutdown: closing all files...
Sun Jul 10 23:53:04 closeAllFiles() finished
Sun Jul 10 23:53:04 [initandlisten] shutdown: journalCleanup...
Sun Jul 10 23:53:04 [initandlisten] removeJournalFiles
Sun Jul 10 23:53:04 [initandlisten] shutdown: removing fs lock...
Sun Jul 10 23:53:04 dbexit: really exiting now

**************

These are two different computers, different kernels and different zfs forks (for linux).

The only common thing is the zfs and the errno:22