RDMA problem on disconnect
Robert Randall
robert.r.randall at gmail.com
Fri Oct 21 13:56:43 PDT 2016
Howdy all,
I'm the Windows interloper <grin>. Attached is a log of a problem we
see when our Windows host disconnects from the Linux target. I could
use some advice on how to track this down.
Best,
Robert
---------- Forwarded message ----------
From: Robert Randall (rrandall) <rrandall at micron.com>
Date: Fri, Oct 21, 2016 at 12:14 PM
Subject: RE: NVMeoF Linux GIT repo
To: J Freyensee <james_p_freyensee at linux.intel.com>, Keith Busch
<keith.busch at intel.com>, "linux-nvme at lists.infradead.org"
<linux-nvme at lists.infradead.org>
Thanks , yes, we have our NVMeoF host driver for Windows working
nicely. The IO path is very stable and very fast. We are seeing
issues with disconnects. When we disconnect se see the problem in the
attached log. Any ideas on what is causing it would be much
appreciated.
Robert,
Are you still doing that Microsoft Windows NVMe fabric host, Linux
kernel target solution?
I'd try to see if you can get the mlx5_1 driver working on a Linux
NVMe Host, Linux NVMe Target solution first.
Or alternatively use a RoCE v1 NIC+driver on the Windows NVMe fabric
host and Linux target.
My concern would be since RoCE v2 is rather new'ish (first appeared in
Linux kernel roughly 4.5), there is some interpretation/implementation
difference between the two OS's.
But to answer your question, if you are interested in stable
latest+greatest, kernel.org has 4.8.3. If you want a bit more bleeding
edge, try the mainline kernel at 4.9-rc1 at kernel.org.
J
>
> Thanks,
> Robert
>
>
> ROBERT RANDALL
> NVE Device Drivers
> Micron Technology, Inc.
>
--
Robert Randall | robert.r.randall at gmail.com
-------------- next part --------------
[ 12.588248] mlx5_core 0000:06:00.0 enp6s0f0: Link up
[ 12.735116] mlx5_core 0000:06:00.1 enp6s0f1: Link up
[ 16.490224] e1000e: enp8s0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
[ 20.005394] input: PS/2 Generic Mouse as /devices/platform/i8042/serio1/input/input4
[ 33.138312] random: crng init done
[ 57.710309] (0000:06:00.1): E-Switch: disable SRIOV: active vports(1) mode(0)
[ 57.713889] (0000:06:00.1): E-Switch: cleanup
[ 58.399819] (0000:06:00.0): E-Switch: disable SRIOV: active vports(1) mode(0)
[ 58.401660] (0000:06:00.0): E-Switch: cleanup
[ 59.134997] mlx5_core 0000:06:00.0: firmware version: 12.16.1020
[ 59.855855] (0000:06:00.0): E-Switch: Total vports 9, l2 table size(65536), per vport: max uc(1024) max mc(16384)
[ 59.857209] mlx5_core 0000:06:00.1: firmware version: 12.16.1020
[ 60.563522] (0000:06:00.1): E-Switch: Total vports 9, l2 table size(65536), per vport: max uc(1024) max mc(16384)
[ 60.566269] mlx5_core 0000:06:00.0: MLX5E: StrdRq(0) RqSz(1024) StrdSz(1) RxCqeCmprss(0)
[ 60.737262] mlx5_core 0000:06:00.0 enp6s0f0: renamed from eth0
[ 60.737617] mlx5_core 0000:06:00.1: MLX5E: StrdRq(0) RqSz(1024) StrdSz(1) RxCqeCmprss(0)
[ 61.038325] mlx5_core 0000:06:00.0 enp6s0f0: Link up
[ 61.041446] mlx5_core 0000:06:00.1 enp6s0f1: renamed from eth0
[ 61.047290] mlx5_ib: Mellanox Connect-IB Infiniband driver v2.2-1 (Feb 2014)
[ 61.981595] mlx5_core 0000:06:00.1 enp6s0f1: Link up
[ 63.159807] e1000e: enp8s0 NIC Link is Down
[ 67.836775] e1000e: enp8s0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx
[ 74.745144] mlx5_core 0000:06:00.0 enp6s0f0: Link up
[ 74.944733] nvmet: adding nsid 1 to subsystem ignite1
[ 74.945148] nvmet: adding nsid 2 to subsystem ignite2
[ 74.945510] nvmet: adding nsid 3 to subsystem ignite3
[ 74.945864] nvmet: adding nsid 4 to subsystem ignite4
[ 74.946747] nvmet_rdma: enabling port 2 (192.168.2.10:5150)
micron at fmslnx0:~$ tail -f /var/log/syslog
Oct 20 07:28:17 fmslnx0 systemd[1]: Reloaded OpenBSD Secure Shell server.
Oct 20 07:28:17 fmslnx0 kernel: [ 74.745144] mlx5_core 0000:06:00.0 enp6s0f0: Link up
Oct 20 07:28:17 fmslnx0 systemd[1]: Reloading OpenBSD Secure Shell server.
Oct 20 07:28:17 fmslnx0 systemd[1]: Reloaded OpenBSD Secure Shell server.
Oct 20 07:28:17 fmslnx0 systemd[1]: Started Raise network interfaces.
Oct 20 07:28:18 fmslnx0 kernel: [ 74.944733] nvmet: adding nsid 1 to subsystem ignite1
Oct 20 07:28:18 fmslnx0 kernel: [ 74.945148] nvmet: adding nsid 2 to subsystem ignite2
Oct 20 07:28:18 fmslnx0 kernel: [ 74.945510] nvmet: adding nsid 3 to subsystem ignite3
Oct 20 07:28:18 fmslnx0 kernel: [ 74.945864] nvmet: adding nsid 4 to subsystem ignite4
Oct 20 07:28:18 fmslnx0 kernel: [ 74.946747] nvmet_rdma: enabling port 2 (192.168.2.10:5150)
Oct 20 07:35:01 fmslnx0 CRON[3376]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Oct 20 07:42:35 fmslnx0 systemd[1]: Starting Cleanup of Temporary Directories...
Oct 20 07:42:35 fmslnx0 systemd-tmpfiles[3381]: [/usr/lib/tmpfiles.d/var.conf:14] Duplicate line for path "/var/log", ignoring.
Oct 20 07:42:35 fmslnx0 systemd[1]: Started Cleanup of Temporary Directories.
Oct 20 07:45:01 fmslnx0 CRON[3395]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Oct 20 07:50:48 fmslnx0 dhclient[3245]: DHCPREQUEST of 10.113.22.90 on enp8s0 to 10.113.22.46 port 67 (xid=0x19ae475f)
Oct 20 07:50:48 fmslnx0 dhclient[3245]: DHCPACK of 10.113.22.90 from 10.113.22.46
Oct 20 07:50:48 fmslnx0 dhclient[3245]: bound to 10.113.22.90 -- renewal in 1615 seconds.
Oct 20 07:55:01 fmslnx0 CRON[3412]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Oct 20 08:05:01 fmslnx0 CRON[3418]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
Oct 20 08:13:15 fmslnx0 kernel: [ 2771.978705] nvmet_rdma: connect request (4): status 0 id ffff8e0aa2f2bc00
Oct 20 08:13:15 fmslnx0 kernel: [ 2771.979382] nvmet_rdma: added mlx5_1.
Oct 20 08:13:15 fmslnx0 kernel: [ 2771.980211] mlx5_1:mlx5_ib_create_cq:948:(pid 1442): cqn 0x5d
Oct 20 08:13:15 fmslnx0 kernel: [ 2771.980269] mlx5_1:calc_sq_size:355:(pid 1442): wqe_size 640
Oct 20 08:13:15 fmslnx0 kernel: [ 2771.981626] mlx5_1:mlx5_ib_create_qp:2041:(pid 1442): ib qpnum 0xf1, mlx qpn 0xf1, rcqn 0x5d, scqn 0x5d
Oct 20 08:13:15 fmslnx0 kernel: [ 2771.982372] nvmet_rdma: nvmet_rdma_create_queue_ib: max_cqe= 63 max_sge= 32 sq_size = 51 cm_id= ffff8e0aa2f2bc00
Oct 20 08:13:15 fmslnx0 kernel: [ 2771.984271] mlx5_1:poll_soft_wc:647:(pid 3422): polled software generated completion on CQ 0x14
Oct 20 08:13:15 fmslnx0 kernel: [ 2771.985964] nvmet_rdma: established (9): status 0 id ffff8e0aa2f2bc00
Oct 20 08:13:15 fmslnx0 kernel: [ 2771.987073] nvmet: ctrl 1 start keep-alive timer for 120 secs
Oct 20 08:13:15 fmslnx0 kernel: [ 2771.987122] nvmet: creating controller 1 for NQN nqn.2014-08.org.nvmexpress:NVMf:uuid:01020304.
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.120199] nvmet_rdma: disconnected (10): status 0 id ffff8e0aa2f2bc00
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.120253] nvmet_rdma: cm_id= ffff8e0aa2f2bc00 queue->state= 1
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.121781] mlx5_1:poll_soft_wc:647:(pid 3422): polled software generated completion on CQ 0x14
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122046] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122105] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf5
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122315] mlx5_1:mlx5_poll_one:586:(pid 3422): Requestor error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122374] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf5
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122428] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122480] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122534] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122586] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122639] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122690] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122742] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122794] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122846] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122897] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.122949] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123000] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123052] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123103] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123155] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123207] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123260] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123311] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123363] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123414] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123466] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123518] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123570] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123621] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123673] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123724] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123776] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123828] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123881] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123933] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.123991] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.124042] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.124433] mlx5_1:mlx5_poll_one:586:(pid 3422): Responder error cqe on cqn 0x5d:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.124488] mlx5_1:mlx5_poll_one:588:(pid 3422): syndrome 0x5, vendor syndrome 0xf9
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.124567] nvmet_rdma: freeing queue 0
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.124607] ------------[ cut here ]------------
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.124651] WARNING: CPU: 0 PID: 1445 at kernel/softirq.c:150 __local_bh_enable_ip+0x6b/0x80
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.124710] Modules linked in: mlx5_ib mlx5_core rdma_ucm ib_uverbs ib_mthca nvmet_rdma nvmet nls_iso8859_1 intel_rapl sb_edac edac_core x86_pkg_temp_thermal intel_powerclamp coretemp dcdbas dell_smm_hwmon kvm_intel kvm irqbypass serio_raw snd_hda_codec_realtek snd_hda_codec_generic joydev input_leds snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm lpc_ich snd_timer snd soundcore mei_me shpchp mei ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic usbhid hid amdkfd amd_iommu_v2 radeon crct10dif_pclmul crc32_pclmul i2c_algo_bit ghash_clmulni_intel ttm aesni_intel drm_kms_helper aes_x86_64 lrw gf128mul syscopyarea glue_helper sysfillrect ablk_helper sysimgblt cryptd fb_sys_fops psmouse e1000e isci ahci ptp drm libahci nvme libsas pps_core nvme_core scsi_transport_sas fjes jitterentropy_rng drbg ansi_cprng [last unloaded: mlx5_core]
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.138833] CPU: 0 PID: 1445 Comm: kworker/0:29 Not tainted 4.8.2 #1
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.141298] Hardware name: Dell Inc. Precision T7600/0VHRW1, BIOS A12 09/29/2014
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.143795] Workqueue: ib_cm cm_work_handler [ib_cm]
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.146279] 0000000000000086 00000000d356260a ffff8e0ac44478f8 ffffffffb93dfce3
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.148788] 0000000000000000 0000000000000000 ffff8e0ac4447938 ffffffffb907899b
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.151285] 00000096d356260a 0000000000000200 ffff8e0abb9b0000 ffff8e0cae2a6494
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.153789] Call Trace:
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.156253] [<ffffffffb93dfce3>] dump_stack+0x63/0x90
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.158692] [<ffffffffb907899b>] __warn+0xcb/0xf0
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.161080] [<ffffffffb9078acd>] warn_slowpath_null+0x1d/0x20
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.163444] [<ffffffffb907e08b>] __local_bh_enable_ip+0x6b/0x80
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.165818] [<ffffffffb975de6c>] ipv4_neigh_lookup+0xac/0x130
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.168184] [<ffffffffc086c512>] addr_resolve_neigh+0xb2/0x2b0 [ib_core]
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.170524] [<ffffffffc086c91c>] addr_resolve+0x20c/0x280 [ib_core]
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.172851] [<ffffffffb93f5a2a>] ? find_next_zero_bit+0x1a/0x20
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.175142] [<ffffffffb93e12f9>] ? idr_get_empty_slot+0x199/0x3b0
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.177413] [<ffffffffb91e855c>] ? kmem_cache_alloc_trace+0xdc/0x1a0
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.179693] [<ffffffffc086cc3c>] rdma_resolve_ip+0x18c/0x2c0 [ib_core]
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.181975] [<ffffffffc086c060>] ? rdma_addr_register_client+0x30/0x30 [ib_core]
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.184272] [<ffffffffc086d199>] rdma_addr_find_l2_eth_by_grh+0x139/0x240 [ib_core]
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.186577] [<ffffffffb902a77c>] ? __switch_to+0x2dc/0x700
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.188885] [<ffffffffc086164d>] ib_init_ah_from_wc+0x19d/0x570 [ib_core]
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.191212] [<ffffffffb9034ec9>] ? sched_clock+0x9/0x10
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.193531] [<ffffffffb90a8f3f>] ? sched_clock_cpu+0x8f/0xa0
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.195846] [<ffffffffb90a2cb4>] ? check_preempt_curr+0x54/0x90
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.198162] [<ffffffffb90ac453>] ? update_curr+0xf3/0x180
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.200471] [<ffffffffc0861a59>] ib_create_ah_from_wc+0x39/0x70 [ib_core]
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.202794] [<ffffffffc0672fc7>] cm_alloc_response_msg.isra.33+0x37/0xb0 [ib_cm]
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.205134] [<ffffffffc0677da5>] cm_work_handler+0x11d5/0x16f2 [ib_cm]
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.207476] [<ffffffffb9092c4b>] process_one_work+0x16b/0x480
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.209815] [<ffffffffb9092fab>] worker_thread+0x4b/0x500
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.212157] [<ffffffffb9092f60>] ? process_one_work+0x480/0x480
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.214506] [<ffffffffb9099158>] kthread+0xd8/0xf0
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.216852] [<ffffffffb9832e1f>] ret_from_fork+0x1f/0x40
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.219189] [<ffffffffb9099080>] ? kthread_create_on_node+0x1a0/0x1a0
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.221540] ---[ end trace 40812fc5b7bae90e ]---
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.223991] mlx5_1:poll_soft_wc:647:(pid 3422): polled software generated completion on CQ 0x14
Oct 20 08:13:15 fmslnx0 kernel: [ 2772.232114] nvmet: ctrl 1 stop keep-alive
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