[LU-9552] lustre uses multipath devices I/O errors

• Type: Bug
• Resolution: Duplicate
• Priority: Critical
• Affects Version/s: Lustre 2.7.0
• Labels: multipath patch
• Environment: CentOS Linux release 7.3.1611 (Core),OFED.3.4.2.0.0.1,lustre-2.7.19.8,Mellanox Technologies MT27500 Family

Epic/Theme

centos7.3 lustre-2.7.19.8

• Severity: 3

Epic

server

• Assignee: WC Triage
• Reporter: haoguozhen (Inactive)

Description

When the lustre servers have OST configured with multipath devices, there are I/O errors that can lead to a server crash.
The following error appears in the system log:
Mar 31 00:02:44 oss01 kernel: blk_cloned_rq_check_limits: over max size limit.
Mar 31 00:02:44 oss01 kernel: device-mapper: multipath: Failing path 8:160.

Followed by several I/O errors
Mar 31 00:17:30 oss01 kernel: blk_update_request: I/O error, dev dm-17, sector 1182279680
Mar 31 00:17:30 oss01 kernel: blk_update_request: I/O error, dev dm-17, sector 1182291968
Mar 31 00:17:30 oss01 kernel: blk_update_request: I/O error, dev dm-17, sector 1182267392
Mar 31 00:17:30 oss01 kernel: blk_update_request: I/O error, dev dm-17, sector 1182304256
Mar 30 21:04:22 oss01 kernel: LDISKFS-fs (dm-17): Remounting filesystem read-only

Issue Links

• duplicates: LU-9551 I/O errors when lustre uses multipath devices