[LU-2458] Device MGC already exists, won't add

• Type: Bug
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.1.6
• Affects Version/s: Lustre 2.1.4, Lustre 2.1.6
• Severity: 3
• Assignee: Bob Glossman (Inactive)
• Reporter: Maloo

Description

This issue was created by maloo for Andreas Dilger <[e-mail]>

This issue relates to the following test suite run: https://maloo.whamcloud.com/test_sets/d34560e2-42a0-11e2-8dba-52540035b04c.

The sanity.sh test_77i, conf-sanity.sh test_6, recovery-small.sh test_62 failed with the following error in the console logs:

class_newdev()) Device MGC10.10.4.160@tcp already exists, won't add
class_attach()) Cannot create device MGC10.10.4.160@tcp of type mgc : -17
lustre_start_simple()) MGC10.10.4.160@tcp attach error -17
lustre_fill_super()) Unable to mount  (-17)
DEBUG MARKER: conf-sanity test_6: @@@@@@ FAIL: test_6 failed with 87

Info required for matching: mount failed

Comments

[Bruno Faccini (Inactive)]

Bob, according to the Lustre log taken during failure, this problem could the b2_1 duplicate of LU-639! So, I decided to back-port associated change (http://review.whamcloud.com/1896) to b2_1 and see if it fixes. I give it a try at http://review.whamcloud.com/6670.

[Bob Glossman (Inactive)]

more b2_1:
https://maloo.whamcloud.com/test_sessions/fb0ca642-d479-11e2-9e73-52540035b04c

[Bob Glossman (Inactive)]

in b2_1, sanity, conf-sanity, recovery-small:
https://maloo.whamcloud.com/test_sessions/e3e05362-d43b-11e2-9e73-52540035b04c

[Jian Yu]

Lustre Tag: v2_1_6_RC1
Lustre Build: http://build.whamcloud.com/job/lustre-b2_1/208
Distro/Arch: RHEL5.9/i686 (client), RHEL5.9/x86_64 (server)

sanity, conf-sanity, recovery-small, replay-dual tests failed with this issue again:
https://maloo.whamcloud.com/test_sessions/dad32c08-cda7-11e2-ba28-52540035b04c

[Jian Yu]

Lustre Tag: v2_1_6_RC1
Lustre Build: http://build.whamcloud.com/job/lustre-b2_1/208
Distro/Arch: RHEL5.9/x86_64

sanity, conf-sanity, recovery-small tests failed with this issue again:
https://maloo.whamcloud.com/test_sessions/8e59afbc-cd68-11e2-a1e0-52540035b04c

[Jian Yu]

Lustre Client: v2_1_5_RC1
Lustre Server: 2.1.4

conf-sanity, recovery-small and replay-dual failed with this issue again:
https://maloo.whamcloud.com/test_sets/0f16b3ba-9327-11e2-b06e-52540035b04c
https://maloo.whamcloud.com/test_sets/17874dc8-9329-11e2-b06e-52540035b04c
https://maloo.whamcloud.com/test_sets/7ff9bc14-932a-11e2-b06e-52540035b04c

[Jian Yu]

Hi Chris,

Did you turn on "jitter" on the test nodes again?