[LU-9737] lnetctl net show command hung after add net

• Type: Question/Request
• Resolution: Unresolved
• Priority: Minor
• Environment: lustre: 2.10.0-RC1; lnet: 0.7.0
• Assignee: Amir Shehata (Inactive)
• Reporter: sebg-crd-pm (Inactive)

Description

Hi,

I am test multi-rail in 2.10.0-RC1 and add one netwrok with ib0,ib1 interfaces.
But lnetctl/lctl always hung after add one net.
Should I enable anything ? Does anyone have user guide for multi-rail configuration? Thanks.

[test steps]
1.mdoprobe lnet
2.lnetctl lnet configure
3.lnetctl net show
net:

• net: lo
  nid: 0@lo
  status: up

4.lnetctl net add --net o2ib0 --if ib0,ib1
5.lnetctl net show =>hung

[kernel message]
[ 434.309534] LNet: Added LNI 172.20.110.220@o2ib [8/256/0/180]
[ 434.323740] LNet: Added LNI 172.20.110.221@o2ib [8/256/0/180]
[ 726.028183] INFO: task lctl:12235 blocked for more than 120 seconds.
[ 726.028248] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 726.028306] lctl D ffffffffa0cdc7b0 0 12235 10719 0x00000084
[ 726.028313] ffff88086c75fd40 0000000000000086 ffff88086cb69f60 ffff88086c75ffd8
[ 726.028317] ffff88086c75ffd8 ffff88086c75ffd8 ffff88086cb69f60 ffffffffa0cdc7a8
[ 726.028320] ffffffffa0cdc7ac ffff88086cb69f60 00000000ffffffff ffffffffa0cdc7b0
[ 726.028324] Call Trace:
[ 726.028343] [<ffffffff8168c769>] schedule_preempt_disabled+0x29/0x70
[ 726.028348] [<ffffffff8168a3c5>] __mutex_lock_slowpath+0xc5/0x1c0
[ 726.028354] [<ffffffff8168982f>] mutex_lock+0x1f/0x2f
[ 726.028372] [<ffffffffa0c96fd6>] LNetNIInit+0x46/0xa40 [lnet]
[ 726.028388] [<ffffffffa0cb478f>] lnet_ioctl+0x4f/0x250 [lnet]
[ 726.028404] [<ffffffffa0c384ac>] libcfs_ioctl+0x2ac/0x4c0 [libcfs]
[ 726.028415] [<ffffffffa0c34517>] libcfs_psdev_ioctl+0x67/0xf0 [libcfs]
[ 726.028422] [<ffffffff81211ed5>] do_vfs_ioctl+0x2d5/0x4b0
[ 726.028427] [<ffffffff8121cb77>] ? __fd_install+0x47/0x60
[ 726.028431] [<ffffffff81212151>] SyS_ioctl+0xa1/0xc0
[ 726.028437] [<ffffffff816965c9>] system_call_fastpath+0x16/0x1b
[ 846.028188] INFO: task lctl:12235 blocked for more than 120 seconds.
[ 846.028256] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.