[LU-3014] mkfs.lustre FATAL: mkfs.lustre: Unable to truncate backing store: Invalid argument

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.4.0
• Affects Version/s: Lustre 2.4.0
• Severity: 3
• Assignee: Li Wei (Inactive)
• Reporter: Li Wei (Inactive)

Description

On an x86_64 machine:

$ MDSSIZE=3200000 FSTYPE=zfs sh llmount.sh 
Stopping clients: RHEL6 /mnt/lustre (opts
Stopping clients: RHEL6 /mnt/lustre2 (opts
Loading modules from /root/Work/Lustre/L59/lustre-release/lustre/tests/..
detected 2 online CPUs by sysfs
Force libcfs to create 2 CPU partitions
../libcfs/libcfs/libcfs options: 'cpu_npartitions=2'
debug=vfstrace rpctrace dlmtrace neterror ha config ioctl super
subsystem_debug=all -lnet -lnd -pinger
../lnet/lnet/lnet options: 'accept=all'
gss/krb5 is not supported
quota/lquota options: 'hash_lqs_cur_bits=3'
Formatting mgs, mds, osts
Format mds1: lustre-mdt1/mdt1

mkfs.lustre FATAL: mkfs.lustre: Unable to truncate backing store: Invalid argument

mkfs.lustre FATAL: Unable to create vdev /tmp/lustre-mdt1 (22)

mkfs.lustre FATAL: mkfs failed 22
mkfs.lustre: exiting with 22 (Invalid argument)

This only happens with ZFS-based targets larger than 2 GB if they file VDevs, which are primarily used for testing purposes.