W dniu 03.11.2014 o 12:27, Sagi Grimberg pisze:
On 11/3/2014 12:28 PM, Adam Mazur wrote:
Can someone help us with these crashes? We are not able to recreate it
on demand, but it takes 30 minutes to a few hours to appear the crash.
We've seen it on kernel 3.17.1 and 3.18-rc2.
Hay Adam,
CC'ing target-devel mailing list (where iser target is maintained).
So I stepped on this issue as well, and I actually have a fix for it
in the pipe. I'm planning to test it with a few other fixes for a little
while longer before I submit the code.
In general, This crash occurs due to a race between tpg shutdown (or
np disable) and RDMA_CM connect requests happening in parallel. iser
target tries to reference a tpg attribute while the np->tpg_np is
actually NULL.
How many targets/initiators/portals did you use? HCA?
Hi Sagi,
There are about 300 targets (lvm volumes), 4 initiators, two portals.
HCA by lspci:
05:00.0 InfiniBand: Mellanox Technologies MT25204 [InfiniHost III Lx
HCA] (rev 20)
Subsystem: Mellanox Technologies MT25204 [InfiniHost III Lx HCA]
Flags: bus master, fast devsel, latency 0, IRQ 46
Memory at df500000 (64-bit, non-prefetchable) [size=1M]
Memory at de800000 (64-bit, prefetchable) [size=8M]
Capabilities: [40] Power Management version 2
Capabilities: [48] Vital Product Data
Capabilities: [90] MSI: Enable- Count=1/32 Maskable- 64bit+
Capabilities: [84] MSI-X: Enable+ Count=32 Masked-
Capabilities: [60] Express Endpoint, MSI 00
Kernel driver in use: ib_mthca
root@portal-1:~# mstflint -d 05:00.0 q
Image type: Failsafe
FW Version: 1.2.0
I.S. Version: 1
Device ID: 25204
Chip Revision: A0
Description: Node Port1 Sys image
GUIDs: 0005ad00000c75c8 0005ad00000c75c9 0005ad00000c75cb
Board ID: (MT_0260000002)
VSD:
PSID: MT_0260000002
root@portal-2:~# mstflint -d 05:00.0 q
Image type: Failsafe
I.S. Version: 1
Chip Revision: A0
Description: Node Port1 Sys image
GUIDs: 0005ad00000c7010 0005ad00000c7011 0005ad00000c7013
Board ID: (MT_0260000002)
VSD:
PSID: MT_0260000002
Would it be possible to send you some patches to test as well?
Absolutely, we can immediately test any patch on any kernel version.
Thanks
Adam
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