System hangs after scanning new lun when trying to enable "HP 3PAR Peer Persistence"
Issue
- System becomes unresponsive and reports below error messages when
Peer Persistence
is enabled onHP 3PAR
array side.
blk_update_request: critical target error, dev sdX, sector 78910
blk_update_request: critical target error, dev dm-X, sector 12345
- All the underlying paths of multipath device are grouped in
same path group
after enablingpeer persistence
onHP 3PAR
array.
testlun (360002ac00000000000000eXYZW) dm-2 3PARdata,VV
size=100G features='1 queue_if_no_path' hwhandler='1 alua' wp=rw
`-+- policy='round-robin 0' prio=50 status=active
|- 1:0:0:2 sdd 8:48 active ready running
|- 1:0:1:2 sdg 8:96 active ready running
|- 1:0:2:2 sdj 8:144 active ready running
|- 1:0:5:2 sdm 8:192 active ready running
|- 2:0:0:2 sdp 8:240 active ready running
|- 2:0:1:2 sds 65:32 active ready running
|- 2:0:6:2 sdv 65:80 active ready running
|- 2:0:7:2 sdy 65:128 active ready running
|- 1:0:3:2 sdaa 65:160 active ready running
|- 1:0:4:2 sdac 65:192 active ready running
|- 1:0:6:2 sdae 65:224 active ready running
|- 1:0:7:2 sdag 66:0 active ready running
|- 2:0:2:2 sdai 66:32 active ready running
|- 2:0:3:2 sdak 66:64 active ready running
|- 2:0:4:2 sdam 66:96 active ready running
`- 2:0:5:2 sdao 66:128 active ready running
Environment
- Red Hat Enterprise Linux
- HP 3PAR
- Peer Persistence
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.