[lustre-discuss] Lustre 2.12.0 and locking problems
Amir Shehata
amir.shehata.whamcloud at gmail.com
Tue Mar 5 15:42:54 PST 2019
It looks like the ping is passing. Did you try it several times to make
sure it always pings successfully?
The way it works is the MDS (2.12) discovers all the interfaces on the
peer. There is a concept of the primary NID for the peer. That's the first
interface configured on the peer. In your case it's the o2ib NID. So when
you do lnetctl net show you'll see Primary NID: <nid>@o2ib.
- primary nid: 172.21.52.88 at o2ib
Multi-Rail: True
peer ni:
- nid: 172.21.48.250 at tcp
state: NA
- nid: 172.21.52.88 at o2ib
state: NA
- nid: 172.21.48.250 at tcp1
state: NA
- nid: 172.21.48.250 at tcp2
state: NA
On the MDS it uses the primary_nid to identify the peer. So you can ping
using the Primary NID. LNet will resolve the Primary NID to the tcp NID. As
you can see in the logs, it never actually talks over o2ib. It ends up
talking to the peer on its TCP NID, which is what you want to do.
I think the problem you're seeing is caused by the combination of 2.12 and
2.10.x.
>From what I understand your servers are 2.12 and your clients are 2.10.x.
Can you try disabling dynamic discovery on your servers:
lnetctl set discovery 0
Do that as part of the initial bring up to make sure 2.12 nodes don't try
to discover peers. Let me know if that resolves your issue?
On Tue, 5 Mar 2019 at 15:09, Riccardo Veraldi <Riccardo.Veraldi at cnaf.infn.it>
wrote:
> it is not exactly this problem.
>
> here is my setup
>
> - MDS is on tcp0
> - client is on tcp0 and o2ib0
> - OSS is on tcp0 and o2ib0
>
> The problem is that the MDS is discovering both the lustre client and the
> OSS as well over o2ib and it should not because the MDS has only one
> ethernet interface. I can see this from lnetctl peer show. This did not
> happen prior to upgrading to Lustre 2.12.0 from 2.10.5
>
> so I tried to debug with lctl ping from the MDS to the lustre client
>
> [root at psmdsana1501 ~]# lctl ping 172.21.48.250 at tcp
> 12345-0 at lo
> 12345-172.21.52.88 at o2ib
> 12345-172.21.48.250 at tcp
>
> 172.21.52.88 is the ib interface of the lustre client.
>
> so I did
>
> [root at psmdsana1501 ~]# lctl ping 172.21.52.88 at o2ib
> 12345-0 at lo
> 12345-172.21.52.88 at o2ib
> 12345-172.21.48.250 at tcp
>
>
> this is the mds lnet.conf
>
> ip2nets:
> - net-spec: tcp
> interfaces:
> 0: eth0
>
> then I did as you suggested on the MDS:
>
> lctl set_param debug=+"net neterror"
>
> lctl ping 172.21.48.250
> 12345-0 at lo
> 12345-172.21.52.88 at o2ib
> 12345-172.21.48.250 at tcp
>
>
> LOG file:
>
> 00000800:00000200:3.0F:1551827094.376143:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a312100] -> 12345-172.21.49.100 at tcp (4)
> 00000800:00000200:3.0:1551827094.376155:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.49.100 at tcp ip 172.21.49.100:1021
> 00000800:00000200:3.0:1551827094.376158:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32d800 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827094.376312:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827097.376102:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f346f9400] -> 12345-172.21.49.110 at tcp (4)
> 00000800:00000200:3.0:1551827097.376110:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.49.110 at tcp ip 172.21.49.110:1021
> 00000800:00000200:3.0:1551827097.376114:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32d800 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827097.376135:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3d32d000] -> 12345-172.21.48.69 at tcp (4)
> 00000800:00000200:3.0:1551827097.376140:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.69 at tcp ip 172.21.48.69:1021
> 00000800:00000200:3.0:1551827097.376143:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3a312b00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827097.376199:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3d32c100] -> 12345-172.21.48.207 at tcp (4)
> 00000800:00000200:3.0:1551827097.376206:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.207 at tcp ip 172.21.48.207:1021
> 00000800:00000200:3.0:1551827097.376208:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32cc00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827097.376322:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827097.376339:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827097.376351:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827098.376136:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f49a16c00] -> 12345-172.21.50.66 at tcp (4)
> 00000800:00000200:3.0:1551827098.376142:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.50.66 at tcp ip 172.21.50.66:1021
> 00000800:00000200:3.0:1551827098.376145:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32cc00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827098.376302:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827099.376211:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a312700] -> 12345-172.21.50.25 at tcp (4)
> 00000800:00000200:3.0:1551827099.376217:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.50.25 at tcp ip 172.21.50.25:1021
> 00000800:00000200:3.0:1551827099.376220:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32cc00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827099.376350:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827102.376181:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3d32dc00] -> 12345-172.21.48.230 at tcp (4)
> 00000800:00000200:3.0:1551827102.376189:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.230 at tcp ip 172.21.48.230:1021
> 00000800:00000200:3.0:1551827102.376192:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32cc00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827102.376377:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827103.376099:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a313400] -> 12345-172.21.48.151 at tcp (4)
> 00000800:00000200:3.0:1551827103.376105:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.151 at tcp ip 172.21.48.151:1021
> 00000800:00000200:3.0:1551827103.376108:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32cc00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827103.376166:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3d32d600] -> 12345-172.21.48.208 at tcp (4)
> 00000800:00000200:3.0:1551827103.376169:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.208 at tcp ip 172.21.48.208:1021
> 00000800:00000200:3.0:1551827103.376170:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3a312b00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827103.376176:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a313a00] -> 12345-172.21.48.210 at tcp (4)
> 00000800:00000200:3.0:1551827103.376178:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.210 at tcp ip 172.21.48.210:1021
> 00000800:00000200:3.0:1551827103.376179:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32d800 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827103.376187:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3d32c700] -> 12345-172.21.48.12 at tcp (4)
> 00000800:00000200:3.0:1551827103.376189:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.12 at tcp ip 172.21.48.12:1021
> 00000800:00000200:3.0:1551827103.376190:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32dd00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827103.376288:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827103.376315:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827103.376330:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827103.376345:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827104.376194:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f346f9600] -> 12345-172.21.49.171 at tcp (4)
> 00000800:00000200:3.0:1551827104.376201:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.49.171 at tcp ip 172.21.49.171:1021
> 00000800:00000200:3.0:1551827104.376208:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32dd00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827104.376243:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0b75c59c00] -> 12345-172.21.48.150 at tcp (4)
> 00000800:00000200:3.0:1551827104.376247:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.150 at tcp ip 172.21.48.150:1021
> 00000800:00000200:3.0:1551827104.376249:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32d800 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827104.376265:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3d32da00] -> 12345-172.21.48.60 at tcp (4)
> 00000800:00000200:3.0:1551827104.376270:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.60 at tcp ip 172.21.48.60:1021
> 00000800:00000200:3.0:1551827104.376272:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3a312b00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827104.376283:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3d32d200] -> 12345-172.21.48.68 at tcp (4)
> 00000800:00000200:3.0:1551827104.376287:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.68 at tcp ip 172.21.48.68:1021
> 00000800:00000200:3.0:1551827104.376290:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32cc00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827104.376324:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0b75c59a00] -> 12345-172.21.49.25 at tcp (4)
> 00000800:00000200:3.0:1551827104.376327:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.49.25 at tcp ip 172.21.49.25:1021
> 00000800:00000200:3.0:1551827104.376329:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3a312900 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827104.376347:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f49a17200] -> 12345-172.21.49.34 at tcp (4)
> 00000800:00000200:3.0:1551827104.376357:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.49.34 at tcp ip 172.21.49.34:1021
> 00000800:00000200:3.0:1551827104.376358:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32d900 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827104.376365:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3d32df00] -> 12345-172.21.49.37 at tcp (4)
> 00000800:00000200:3.0:1551827104.376372:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.49.37 at tcp ip 172.21.49.37:1021
> 00000800:00000200:3.0:1551827104.376374:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3a312300 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827104.376459:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827104.376483:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827104.376503:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827104.376522:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827104.376542:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827104.376599:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827104.376620:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827105.376168:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a312d00] -> 12345-172.21.48.225 at tcp (4)
> 00000800:00000200:3.0:1551827105.376174:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.225 at tcp ip 172.21.48.225:1021
> 00000800:00000200:3.0:1551827105.376177:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3a312300 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827105.376210:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a313b00] -> 12345-172.21.49.105 at tcp (4)
> 00000800:00000200:3.0:1551827105.376213:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.49.105 at tcp ip 172.21.49.105:1021
> 00000800:00000200:3.0:1551827105.376214:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32d900 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827105.376289:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827105.376322:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827106.376096:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a312400] -> 12345-172.21.50.22 at tcp (4)
> 00000800:00000200:3.0:1551827106.376102:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.50.22 at tcp ip 172.21.50.22:1021
> 00000800:00000200:3.0:1551827106.376105:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32d900 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827106.376180:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827107.376127:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a313300] -> 12345-172.21.49.33 at tcp (4)
> 00000800:00000200:3.0:1551827107.376135:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.49.33 at tcp ip 172.21.49.33:1021
> 00000800:00000200:3.0:1551827107.376139:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32d900 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827107.376167:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a312c00] -> 12345-172.21.32.60 at tcp (4)
> 00000800:00000200:3.0:1551827107.376171:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.32.60 at tcp ip 172.21.32.60:1021
> 00000800:00000200:3.0:1551827107.376173:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3a312300 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827107.376317:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827107.376347:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000400:00000200:3.0:1551827107.898298:0:17198:0:(lib-move.c:4114:lnet_parse())
> TRACE: 172.21.49.233 at tcp(172.21.49.233 at tcp) <- 172.21.49.100 at tcp : PUT -
> for me
> 00000400:00000200:3.0:1551827107.898314:0:17198:0:(lib-ptl.c:571:lnet_ptl_match_md())
> Request from 12345-172.21.49.100 at tcp of length 520 into portal 26
> MB=0x5c3e6495f2d10
> 00000400:00000100:3.0:1551827107.898320:0:17198:0:(lib-move.c:3753:lnet_parse_put())
> Dropping PUT from 12345-172.21.49.100 at tcp portal 26 match
> 1622768724421904 offset 0 length 520: 4
> 00000400:00000200:3.0:1551827107.898323:0:17198:0:(lib-msg.c:816:lnet_is_health_check())
> health check = 0, status = -2, hstatus = 0
> 00000400:00000200:3.0:1551827107.898336:0:17198:0:(lib-move.c:4114:lnet_parse())
> TRACE: 172.21.49.233 at tcp(172.21.49.233 at tcp) <- 172.21.49.100 at tcp : PUT -
> for me
> 00000400:00000200:3.0:1551827107.898340:0:17198:0:(lib-ptl.c:571:lnet_ptl_match_md())
> Request from 12345-172.21.49.100 at tcp of length 520 into portal 12
> MB=0x5c3e6495f2d50
> 00000400:00000100:3.0:1551827107.898342:0:17198:0:(lib-move.c:3753:lnet_parse_put())
> Dropping PUT from 12345-172.21.49.100 at tcp portal 12 match
> 1622768724421968 offset 0 length 520: 4
> 00000400:00000200:3.0:1551827107.898344:0:17198:0:(lib-msg.c:816:lnet_is_health_check())
> health check = 0, status = -2, hstatus = 0
> 00000800:00000200:3.0:1551827108.376065:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a312800] -> 12345-172.21.48.236 at tcp (4)
> 00000800:00000200:3.0:1551827108.376072:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.236 at tcp ip 172.21.48.236:1021
> 00000800:00000200:3.0:1551827108.376075:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3a312300 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827108.376124:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a313f00] -> 12345-172.21.49.31 at tcp (4)
> 00000800:00000200:3.0:1551827108.376127:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.49.31 at tcp ip 172.21.49.31:1021
> 00000800:00000200:3.0:1551827108.376128:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32d900 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827108.376230:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827108.376251:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827109.376098:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f3a313c00] -> 12345-172.21.48.219 at tcp (4)
> 00000800:00000200:3.0:1551827109.376106:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.219 at tcp ip 172.21.48.219:1021
> 00000800:00000200:3.0:1551827109.376109:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32d900 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827109.376283:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000400:00000080:3.0:1551827109.465749:0:17286:0:(module.c:90:libcfs_ioctl())
> libcfs ioctl cmd 3221775678
> 00000400:00000200:3.0:1551827109.465771:0:17286:0:(lib-move.c:4783:LNetGet())
> LNetGet -> 12345-172.21.48.250 at tcp
> 00000400:00000200:3.0:1551827109.465780:0:17286:0:(lib-move.c:2450:lnet_handle_send_case_locked())
> Source ANY to NMR: 172.21.48.250 at tcp local destination
> 00000400:00000200:3.0:1551827109.465785:0:17286:0:(lib-move.c:1714:lnet_handle_send())
> rspt_next_hop_nid = 172.21.48.250 at tcp
> 00000400:00000200:3.0:1551827109.465792:0:17286:0:(lib-move.c:1728:lnet_handle_send())
> TRACE: 172.21.49.233 at tcp(172.21.49.233 at tcp:<?>) -> 172.21.48.250 at tcp(
> 172.21.48.250 at tcp:172.21.48.250 at tcp) : GET try# 0
> 00000800:00000200:3.0:1551827109.465798:0:17286:0:(socklnd_cb.c:996:ksocknal_send())
> sending 0 bytes in 0 frags to 12345-172.21.48.250 at tcp
> 00000800:00000200:3.0:1551827109.465804:0:17286:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f49a9be00] -> 12345-172.21.48.250 at tcp (5)
> 00000800:00000200:3.0:1551827109.465812:0:17286:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.250 at tcp ip 172.21.48.250:988
> 00000800:00000200:3.0:1551827109.465815:0:17286:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f307a7300 type 2, nob 96 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827109.465874:0:17198:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000400:00000200:3.0:1551827109.465883:0:17198:0:(lib-msg.c:816:lnet_is_health_check())
> health check = 1, status = 0, hstatus = 0
> 00000400:00000200:3.0:1551827109.465887:0:17198:0:(lib-msg.c:630:lnet_health_check())
> health check: 172.21.49.233 at tcp->172.21.48.250 at tcp: GET: OK
> 00000400:00000200:3.0:1551827109.465896:0:17286:0:(api-ni.c:4045:lnet_ping())
> poll 1(5 0)
> 00000400:00000200:3.0:1551827109.466442:0:17198:0:(lib-move.c:4114:lnet_parse())
> TRACE: 172.21.49.233 at tcp(172.21.49.233 at tcp) <- 172.21.48.250 at tcp : REPLY
> - for me
> 00000400:00000200:3.0:1551827109.466449:0:17198:0:(lib-move.c:3881:lnet_parse_reply())
> 172.21.49.233 at tcp: Reply from 12345-172.21.48.250 at tcp of length 64/64
> into md 0x1d
> 00000400:00000200:3.0:1551827109.466459:0:17198:0:(lib-md.c:69:lnet_md_unlink())
> Unlinking md ffff8e0f37258088
> 00000400:00000200:3.0:1551827109.466460:0:17198:0:(lib-msg.c:816:lnet_is_health_check())
> health check = 0, status = 0, hstatus = 0
> 00000400:00000200:3.0:1551827109.466466:0:17286:0:(api-ni.c:4045:lnet_ping())
> poll 1(3 0) unlinked
> 00000800:00000200:3.0:1551827110.376074:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f37728500] -> 12345-172.21.48.203 at tcp (4)
> 00000800:00000200:3.0:1551827110.376084:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.203 at tcp ip 172.21.48.203:1021
> 00000800:00000200:3.0:1551827110.376089:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32d900 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827110.376124:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f37728f00] -> 12345-172.21.48.11 at tcp (4)
> 00000800:00000200:3.0:1551827110.376127:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.11 at tcp ip 172.21.48.11:1021
> 00000800:00000200:3.0:1551827110.376129:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3a312300 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827110.376141:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f37729f00] -> 12345-172.21.48.223 at tcp (4)
> 00000800:00000200:3.0:1551827110.376143:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.223 at tcp ip 172.21.48.223:1021
> 00000800:00000200:3.0:1551827110.376145:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3a312900 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827110.376207:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f37729900] -> 12345-172.21.48.71 at tcp (4)
> 00000800:00000200:3.0:1551827110.376211:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.71 at tcp ip 172.21.48.71:1021
> 00000800:00000200:3.0:1551827110.376212:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32cc00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827110.376279:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827110.376290:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827110.376303:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827110.376322:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000400:00000200:3.0:1551827110.730073:0:17198:0:(lib-move.c:4114:lnet_parse())
> TRACE: 172.21.49.233 at tcp(172.21.49.233 at tcp) <- 172.21.48.69 at tcp : PUT -
> for me
> 00000400:00000200:3.0:1551827110.730085:0:17198:0:(lib-ptl.c:571:lnet_ptl_match_md())
> Request from 12345-172.21.48.69 at tcp of length 520 into portal 26
> MB=0x5c4c25c755750
> 00000400:00000100:3.0:1551827110.730091:0:17198:0:(lib-move.c:3753:lnet_parse_put())
> Dropping PUT from 12345-172.21.48.69 at tcp portal 26 match 1623713937446736
> offset 0 length 520: 4
> 00000400:00000200:3.0:1551827110.730093:0:17198:0:(lib-msg.c:816:lnet_is_health_check())
> health check = 0, status = -2, hstatus = 0
> 00000400:00000200:3.0:1551827110.730103:0:17198:0:(lib-move.c:4114:lnet_parse())
> TRACE: 172.21.49.233 at tcp(172.21.49.233 at tcp) <- 172.21.48.69 at tcp : PUT -
> for me
> 00000400:00000200:3.0:1551827110.730106:0:17198:0:(lib-ptl.c:571:lnet_ptl_match_md())
> Request from 12345-172.21.48.69 at tcp of length 520 into portal 12
> MB=0x5c4c25c755760
> 00000400:00000100:3.0:1551827110.730113:0:17198:0:(lib-move.c:3753:lnet_parse_put())
> Dropping PUT from 12345-172.21.48.69 at tcp portal 12 match 1623713937446752
> offset 0 length 520: 4
> 00000400:00000200:3.0:1551827110.730115:0:17198:0:(lib-msg.c:816:lnet_is_health_check())
> health check = 0, status = -2, hstatus = 0
> 00000800:00000200:3.0:1551827111.376066:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f37728c00] -> 12345-172.21.48.72 at tcp (4)
> 00000800:00000200:3.0:1551827111.376072:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.72 at tcp ip 172.21.48.72:1021
> 00000800:00000200:3.0:1551827111.376075:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3d32cc00 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827111.376119:0:17197:0:(socklnd.c:195:ksocknal_find_peer_locked())
> got peer_ni [ffff8e0f37729600] -> 12345-172.21.48.204 at tcp (4)
> 00000800:00000200:3.0:1551827111.376121:0:17197:0:(socklnd_cb.c:757:ksocknal_queue_tx_locked())
> Sending to 12345-172.21.48.204 at tcp ip 172.21.48.204:1021
> 00000800:00000200:3.0:1551827111.376122:0:17197:0:(socklnd_cb.c:776:ksocknal_queue_tx_locked())
> Packet ffff8e0f3a312900 type 192, nob 24 niov 1 nkiov 0
> 00000800:00000200:3.0:1551827111.376218:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> 00000800:00000200:3.0:1551827111.376230:0:17200:0:(socklnd_cb.c:549:ksocknal_process_transmit())
> send(0) 0
> Debug log: 162 lines, 162 kept, 0 dropped, 0 bad.
>
> On 3/5/19 2:15 PM, Amir Shehata wrote:
>
> Take a look at this: https://jira.whamcloud.com/browse/LU-11840
> Let me know if this is the same issue you're seeing.
>
> On Tue, 5 Mar 2019 at 14:04, Amir Shehata <
> amir.shehata.whamcloud at gmail.com> wrote:
>
>> Hi Riccardo,
>>
>> It's not LNet Health. It's Dynamic Discovery. What's happening is that
>> 2.12 is discovering all the interfaces on the peer. That's why you see all
>> the interfaces in the peer show.
>>
>> Multi-Rail doesn't enable o2ib. It just sees it. If the node doing the
>> discovery has only tcp, then it should never try to connect over the o2ib.
>>
>> Are you able to do a "lnetctl ping 172.21.48.250 at tcp" from the MDS
>> multiple times? Do you see the ping failing intermittently?
>>
>> What should happen is that when the MDS (running 2.12) tries to talk to
>> the peer you have identified, then it'll discover its interfaces. But then
>> should realize that it can only reach it on the tcp network, since that's
>> the only network configured on the MDS.
>>
>> It might help, if you just configure LNet only, on the MDS and the peer
>> and run a simple
>> lctl set_param debug=+"net neterror"
>> lnetctl ping <>
>> lctl dk >log
>>
>> If you can share the debug output, it'll help to pinpoint the problem.
>>
>> thanks
>> amir
>>
>> On Tue, 5 Mar 2019 at 12:30, Riccardo Veraldi <
>> Riccardo.Veraldi at cnaf.infn.it> wrote:
>>
>>> I think I figured out the problem.
>>> My problem is related to Lnet Network Health feature:
>>> https://jira.whamcloud.com/browse/LU-9120
>>> the lustre MDS and the lsutre client having same version 2.12.0
>>> negotiate a Multi-rail peer connection while this does not happen with
>>> the other clients (2.10.5). So what happens is that both IB and tcp are
>>> being used during transfers.
>>> tcp is only for connecting to the MDS, IB only to connect to the OSS
>>> anyway Multi-rail is enabled by default between the MDS,OSS and client.
>>> This messes up the situation. the MDS has only one TCP interface and
>>> cannot communicate by IB but in the "lnetctl peer show" a NID @o2ib
>>> shows up and it should not. At this point the MDS tries to connect to
>>> the client using IB and it will never work because there is no IB on the
>>> MDS.
>>> MDS Lnet configuration:
>>>
>>> net:
>>> - net type: lo
>>> local NI(s):
>>> - nid: 0 at lo
>>> status: up
>>> - net type: tcp
>>> local NI(s):
>>> - nid: 172.21.49.233 at tcp
>>> status: up
>>> interfaces:
>>> 0: eth0
>>>
>>> but if I look at lnetctl peer show I See
>>>
>>> - primary nid: 172.21.52.88 at o2ib
>>> Multi-Rail: True
>>> peer ni:
>>> - nid: 172.21.48.250 at tcp
>>> state: NA
>>> - nid: 172.21.52.88 at o2ib
>>> state: NA
>>> - nid: 172.21.48.250 at tcp1
>>> state: NA
>>> - nid: 172.21.48.250 at tcp2
>>> state: NA
>>>
>>> there should be no o2ib nid but Multi-rail for some reason enables it.
>>> I do not have problems with the other clients (non 2.12.0)
>>>
>>> How can I disable Multi-rail on 2.12.0 ??
>>>
>>> thank you
>>>
>>>
>>>
>>> On 3/5/19 12:14 PM, Patrick Farrell wrote:
>>> > Riccardo,
>>> >
>>> > Since 2.12 is still a relatively new maintenance release, it would be
>>> helpful if you could open an LU and provide more detail there - Such as
>>> what clients were doing, if you were using any new features (like DoM or
>>> FLR), and full dmesg from the clients and servers involved in these
>>> evictions.
>>> >
>>> > - Patrick
>>> >
>>> > On 3/5/19, 11:50 AM, "lustre-discuss on behalf of Riccardo Veraldi" <
>>> lustre-discuss-bounces at lists.lustre.org on behalf of
>>> Riccardo.Veraldi at cnaf.infn.it> wrote:
>>> >
>>> > Hello,
>>> >
>>> > I have quite a big issue on my Lustre 2.12.0 MDS/MDT.
>>> >
>>> > Clients moving data to the OSS occur into a locking problem I
>>> never met
>>> > before.
>>> >
>>> > The clients are mostly 2.10.5 except for one which is 2.12.0 but
>>> > regardless the client version the problem is still there.
>>> >
>>> > So these are the errors I see on hte MDS/MDT. When this happens
>>> > everything just hangs. If I reboot the MDS everything is back to
>>> > normality but it happened already 2 times in 3 days and it is
>>> disrupting.
>>> >
>>> > Any hints ?
>>> >
>>> > Is it feasible to downgrade from 2.12.0 to 2.10.6 ?
>>> >
>>> > thanks
>>> >
>>> > Mar 5 11:10:33 psmdsana1501 kernel: Lustre:
>>> > 7898:0:(client.c:2132:ptlrpc_expire_one_request()) @@@ Request
>>> sent has
>>> > failed due to network error: [sent 1551813033/real 1551813033]
>>> > req at ffff9fdcbecd0300 x1626845000210688/t0(0)
>>> > o104->ana15-MDT0000 at 172.21.52.87@o2ib:15/16 lens 296/224 e 0 to
>>> 1 dl
>>> > 1551813044 ref 1 fl Rpc:eX/0/ffffffff rc 0/-1
>>> > Mar 5 11:10:33 psmdsana1501 kernel: Lustre:
>>> > 7898:0:(client.c:2132:ptlrpc_expire_one_request()) Skipped
>>> 50552576
>>> > previous similar messages
>>> > Mar 5 11:13:03 psmdsana1501 kernel: LustreError:
>>> > 7898:0:(ldlm_lockd.c:682:ldlm_handle_ast_error()) ### client (nid
>>> > 172.21.52.87 at o2ib) failed to reply to blocking AST
>>> (req at ffff9fdcbecd0300
>>> > x1626845000210688 status 0 rc -110), evict it ns:
>>> mdt-ana15-MDT0000_UUID
>>> > lock: ffff9fde9b6873c0/0x9824623d2148ef38 lrc: 4/0,0 mode: PR/PR
>>> res:
>>> > [0x2000013a9:0x1d347:0x0].0x0 bits 0x13/0x0 rrc: 5 type: IBT
>>> flags:
>>> > 0x60200400000020 nid: 172.21.52.87 at o2ib remote:
>>> 0xd8efecd6e7621e63
>>> > expref: 8 pid: 7898 timeout: 333081 lvb_type: 0
>>> > Mar 5 11:13:03 psmdsana1501 kernel: LustreError: 138-a:
>>> ana15-MDT0000:
>>> > A client on nid 172.21.52.87 at o2ib was evicted due to a lock
>>> blocking
>>> > callback time out: rc -110
>>> > Mar 5 11:13:03 psmdsana1501 kernel: LustreError:
>>> > 5321:0:(ldlm_lockd.c:256:expired_lock_main()) ### lock callback
>>> timer
>>> > expired after 150s: evicting client at 172.21.52.87 at o2ib ns:
>>> > mdt-ana15-MDT0000_UUID lock: ffff9fde9b6873c0/0x9824623d2148ef38
>>> lrc:
>>> > 3/0,0 mode: PR/PR res: [0x2000013a9:0x1d347:0x0].0x0 bits
>>> 0x13/0x0 rrc:
>>> > 5 type: IBT flags: 0x60200400000020 nid: 172.21.52.87 at o2ib
>>> remote:
>>> > 0xd8efecd6e7621e63 expref: 9 pid: 7898 timeout: 0 lvb_type: 0
>>> > Mar 5 11:13:04 psmdsana1501 kernel: Lustre: ana15-MDT0000:
>>> Connection
>>> > restored to 59c5a826-f4e9-0dd0-8d4f-08c204f25941 (at
>>> 172.21.52.87 at o2ib)
>>> > Mar 5 11:15:34 psmdsana1501 kernel: LustreError:
>>> > 7898:0:(ldlm_lockd.c:682:ldlm_handle_ast_error()) ### client (nid
>>> > 172.21.52.142 at o2ib) failed to reply to blocking AST
>>> > (req at ffff9fde2d393600 x1626845000213776 status 0 rc -110), evict
>>> it ns:
>>> > mdt-ana15-MDT0000_UUID lock: ffff9fde9b6858c0/0x9824623d2148efee
>>> lrc:
>>> > 4/0,0 mode: PR/PR res: [0x2000013ac:0x1:0x0].0x0 bits 0x13/0x0
>>> rrc: 3
>>> > type: IBT flags: 0x60200400000020 nid: 172.21.52.142 at o2ib remote:
>>> > 0xbb35541ea6663082 expref: 9 pid: 7898 timeout: 333232 lvb_type: 0
>>> > Mar 5 11:15:34 psmdsana1501 kernel: LustreError: 138-a:
>>> ana15-MDT0000:
>>> > A client on nid 172.21.52.142 at o2ib was evicted due to a lock
>>> blocking
>>> > callback time out: rc -110
>>> > Mar 5 11:15:34 psmdsana1501 kernel: LustreError:
>>> > 5321:0:(ldlm_lockd.c:256:expired_lock_main()) ### lock callback
>>> timer
>>> > expired after 151s: evicting client at 172.21.52.142 at o2ib ns:
>>> > mdt-ana15-MDT0000_UUID lock: ffff9fde9b6858c0/0x9824623d2148efee
>>> lrc:
>>> > 3/0,0 mode: PR/PR res: [0x2000013ac:0x1:0x0].0x0 bits 0x13/0x0
>>> rrc: 3
>>> > type: IBT flags: 0x60200400000020 nid: 172.21.52.142 at o2ib remote:
>>> > 0xbb35541ea6663082 expref: 10 pid: 7898 timeout: 0 lvb_type: 0
>>> > Mar 5 11:15:34 psmdsana1501 kernel: Lustre: ana15-MDT0000:
>>> Connection
>>> > restored to 9d49a115-646b-c006-fd85-000a4b90019a (at
>>> 172.21.52.142 at o2ib)
>>> > Mar 5 11:20:33 psmdsana1501 kernel: Lustre:
>>> > 7898:0:(client.c:2132:ptlrpc_expire_one_request()) @@@ Request
>>> sent has
>>> > failed due to network error: [sent 1551813633/real 1551813633]
>>> > req at ffff9fdcc2a95100 x1626845000222624/t0(0)
>>> > o104->ana15-MDT0000 at 172.21.52.87@o2ib:15/16 lens 296/224 e 0 to
>>> 1 dl
>>> > 1551813644 ref 1 fl Rpc:eX/2/ffffffff rc 0/-1
>>> > Mar 5 11:20:33 psmdsana1501 kernel: Lustre:
>>> > 7898:0:(client.c:2132:ptlrpc_expire_one_request()) Skipped
>>> 23570550
>>> > previous similar messages
>>> > Mar 5 11:22:46 psmdsana1501 kernel: LustreError:
>>> > 7898:0:(ldlm_lockd.c:682:ldlm_handle_ast_error()) ### client (nid
>>> > 172.21.52.87 at o2ib) failed to reply to blocking AST
>>> (req at ffff9fdcc2a95100
>>> > x1626845000222624 status 0 rc -110), evict it ns:
>>> mdt-ana15-MDT0000_UUID
>>> > lock: ffff9fde86ffdf80/0x9824623d2148f23a lrc: 4/0,0 mode: PR/PR
>>> res:
>>> > [0x2000013ae:0x1:0x0].0x0 bits 0x13/0x0 rrc: 3 type: IBT flags:
>>> > 0x60200400000020 nid: 172.21.52.87 at o2ib remote:
>>> 0xd8efecd6e7621eb7
>>> > expref: 9 pid: 7898 timeout: 333665 lvb_type: 0
>>> > Mar 5 11:22:46 psmdsana1501 kernel: LustreError: 138-a:
>>> ana15-MDT0000:
>>> > A client on nid 172.21.52.87 at o2ib was evicted due to a lock
>>> blocking
>>> > callback time out: rc -110
>>> > Mar 5 11:22:46 psmdsana1501 kernel: LustreError:
>>> > 5321:0:(ldlm_lockd.c:256:expired_lock_main()) ### lock callback
>>> timer
>>> > expired after 150s: evicting client at 172.21.52.87 at o2ib ns:
>>> > mdt-ana15-MDT0000_UUID lock: ffff9fde86ffdf80/0x9824623d2148f23a
>>> lrc:
>>> > 3/0,0 mode: PR/PR res: [0x2000013ae:0x1:0x0].0x0 bits 0x13/0x0
>>> rrc: 3
>>> > type: IBT flags: 0x60200400000020 nid: 172.21.52.87 at o2ib remote:
>>> > 0xd8efecd6e7621eb7 expref: 10 pid: 7898 timeout: 0 lvb_type: 0
>>> >
>>> >
>>> > _______________________________________________
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>>> > lustre-discuss at lists.lustre.org
>>> > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
>>> >
>>> >
>>> > _______________________________________________
>>> > lustre-discuss mailing list
>>> > lustre-discuss at lists.lustre.org
>>> > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
>>>
>>>
>>> _______________________________________________
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>>> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
>>>
>>
>
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