[LU-2042] Unable to mount a standalone MGT

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

Description

An MGT does not need an index. (The ZFS related errors are irrelevant.)

[root@h221f tests]# ../utils/mkfs.lustre --mgs --reformat --device-size=200000 /tmp/mgs
Failed to load ZFS module stack.
Load the module manually by running 'insmod <location>/zfs.ko' as root.

   Permanent disk data:
Target:     MGS
Index:      unassigned
Lustre FS:  
Mount type: ldiskfs
Flags:      0x74
              (MGS needs_index first_time update )
Persistent mount opts: user_xattr,errors=remount-ro
Parameters:

formatting backing filesystem ldiskfs on /dev/loop2
	target name  MGS
	4k blocks     50000
	options        -q -O uninit_bg,dir_nlink,quota,huge_file,flex_bg -E lazy_journal_init -F
mkfs_cmd = mke2fs -j -b 4096 -L MGS  -q -O uninit_bg,dir_nlink,quota,huge_file,flex_bg -E lazy_journal_init -F /dev/loop2 50000
Writing CONFIGS/mountdata
[root@h221f tests]# mount -t lustre -o loop /tmp/mgs /mnt/mds1
Failed to load ZFS module stack.
Load the module manually by running 'insmod <location>/zfs.ko' as root.
mount.lustre: /dev/loop2 has no index assigned (probably formatted with old mkfs)
[root@h221f tests]#