[LU-2022] MGS fails to mount due to "has no index assigned (probably formatted with old mkfs" error

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.4.0
• Affects Version/s: Lustre 2.4.0
• Severity: 3
• Assignee: Keith Mannthey (Inactive)
• Reporter: James A Simmons

Description

In 2.4 the MGS is not formated with a index. In fact you can't specify a index but mount.lustre will not mount any device without a index.

Issue Links

• is related to: LU-3559 MGS formatted with Lustre 2.1 cannot be started with Lustre 2.4
• is related to: LU-2202 1.8.8/2.2<->master MDS fails to mount due to lack of index for MDS on older lustre

Comments

[Sarah Liu]

I will file a separated ticket for the interop issue and close this one. Thanks.

[James A Simmons]

BTW I think the lack of index for MDT with older test frameworks should be a separate ticket from this.

[James A Simmons]

The patch only fixed the case of where the MGS and MDS were not on the same box. What you are seeing is from the lack of a index for the MDT when run from older lustre versions on the clients. We could fix this either but updating the test framework on earlier lustre to detect the lustre version on the MDS and supply a --index=0 or we could patch mkfs.lustre to automatically supply a index of zero for a MDT if no index was supplied.

[Sarah Liu]

Still hit this failures in interop testing between master and b2_2/b1_8

https://maloo.whamcloud.com/test_sessions/98a446b8-170a-11e2-962d-52540035b04c
https://maloo.whamcloud.com/test_sessions/f1eae4c8-1649-11e2-9c65-52540035b04c

13:52:33:Starting mds: -o user_xattr,acl  /dev/lvm-MDS/P1 /mnt/mds
13:52:33:CMD: client-29vm3 mkdir -p /mnt/mds; mount -t lustre -o user_xattr,acl  /dev/lvm-MDS/P1 /mnt/mds
13:52:33:client-29vm3: mount.lustre: /dev/mapper/lvm--MDS-P1 has no index assigned (probably formatted with old mkfs)

[Keith Mannthey (Inactive)]

The above patch was merged.