[LU-8694] ZFS format fails when /etc/hostid is set or unset.

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.9.0
• Fix Version/s: Lustre 2.9.0
• Type: Bug
• Priority: Critical
• Reporter: Cliff White (Inactive)
• Assignee: Nathaniel Clark
• Resolution: Fixed
• Severity: 3

Description

Attempting to format ZFS OSTs we see the following error:
mkfs.lustre FATAL: spl_hostid not set. See mkfs.lustre(8)

We attempt to set hostid by using /sbin/genhostid, we confirm the ID exists, same failure. We attempt to set hostid by /usr/bin/hostid, confirm the ID exists, same failure
At this time we cannot format OSTS, system is dead.

Issue Links

• is related to: LU-8816 test-framework needs to reload SPL mo...
• is related to: LU-7314 In kiblnd_rejected(), NULL pointer 'c...

Comments

[Peter Jones]

Nathaniel

Can you please help improve the docs here?

Peter

[Cliff White (Inactive)]

The fix is simple - reload the SPL module after creating /etc/hostid. Nathaniel will be updating the documents. We are able to format now.

[Andreas Dilger]

This mostly means that we should change the mkfs.lustre message to indicate the spl.ko module needs to be reloaded (or better yet, try to unload it and reload it internally once), and improve the mkfs.lustre.8 man page to prefer running genhostid over spl.ko module parameters, and indicate that the spl.ko module needs to be reloaded after generating a new hostid.

[Gerrit Updater]

Nathaniel Clark ([e-mail]) uploaded a new patch: http://review.whamcloud.com/23118
Subject: LU-8694 docs: ZFS hostid mkfs.lustre(8) man page update
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: b3e16b15a405d3993bdd8d0938977f294a670bc6

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch http://review.whamcloud.com/23118/
Subject: LU-8694 docs: ZFS hostid mkfs.lustre(8) man page update
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 5de18d44e1074d18f72946b2a19cd1b3a0b749c8

[Peter Jones]

Landed for 2.9

[Abe]

Hi All,
I'm hitting the same problem with the master release under SLES12 SP2:

mkfs.lustre --reformat --mdt --mgs --servicenode= 211@o2ib --backfstype=zfs --fsname=tempAA --index=0 mgs/mdt

Permanent disk data:
Target: tempAA:MDT0000
Index: 0
Lustre FS: tempAA
Mount type: zfs
Flags: 0x1065
(MDT MGS first_time update no_primnode )
Persistent mount opts:
Parameters: failover.node=10.10.10.213@o2ib:10.10.10.211@o2ib

mkfs.lustre FATAL: spl_hostid not set. See mkfs.lustre(8)
mkfs.lustre FATAL: mkfs failed 22
mkfs.lustre: exiting with 22 (Invalid argument)

can someone share the detail workaround for this ?

thanks,
Abe

[Andreas Dilger]

Abe, I think there was another update in this area:

http://review.whamcloud.com/23804 "LU-8816 utils: Check /etc/hostid instead of failing for ZFS"