[lustre-discuss] Lustre 2.12.3 client can't mount filesystem

Andreas Dilger adilger at whamcloud.com
Wed Feb 12 12:49:45 PST 2020

Can you please try 2.12.4, it was just released yesterday and has a number of fixes.

On Feb 12, 2020, at 13:36, Kevin M. Hildebrand <kevin at umd.edu<mailto:kevin at umd.edu>> wrote:

I just updated some of my clients to RHEL 7.7, Lustre 2.12.3, MOFED 4.7.
Server version is 2.10.8.

I'm now getting errors mounting the filesystem on the client.  In fact, I can't even do an 'lctl ping' to any of the servers without getting an I/O error.

Debug logs show this message when I attempt an lctl ping:
00000800:00020000:0.0:1581538955.090767:0:20471:0:(o2iblnd.c:941:kiblnd_create_conn()) Can't create QP: -12, send_wr: 32634, recv_wr: 254, send_sge: 2, recv_sge: 1

# lctl list_nids at o2ib3
# lctl ping at o2ib3
failed to ping at o2ib3: Input/output error

Interestingly, if I do an 'lctl ping' to the client _from_ the server, the ping succeeds, and from that point on pings from client _to_ server work fine until the client is rebooted or lnet is reloaded.

ko2iblnd parameters match on clients and servers, namely:
options ko2iblnd peer_credits=128 peer_credits_hiw=64 credits=1024 concurrent_sends=256 ntx=2048 map_on_demand=32 fmr_pool_size=2048 fmr_flush_trigger=512 fmr_cache=1

Anyone have any thoughts?


Kevin Hildebrand
University of Maryland
Division of IT
lustre-discuss mailing list
lustre-discuss at lists.lustre.org<mailto:lustre-discuss at lists.lustre.org>

Cheers, Andreas
Andreas Dilger
Principal Lustre Architect

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/attachments/20200212/25505294/attachment-0001.html>

More information about the lustre-discuss mailing list