[slurm-users] "Incompatible plugin version" after upgrade

[Alan Orth]

Dear list,

Twice this month I've had jobs stuck in completing state (CG). When I go to
the compute node and check slurmd.log I see a message about "incompatible
plugin version", for example:

[2022-08-16T03:36:25.823] [748139.batch] done with job
[2022-08-16T12:54:21.404] [748139.extern] plugin_load_from_file:
Incompatible Slurm plugin /usr/lib64/slurm/hash_k12.so version
(22.05.3
)
[2022-08-16T12:54:21.404] [748139.extern] error: Couldn't load
specified plugin name for hash/k12: Incompatible plugin version
[2022-08-16T12:54:21.404] [748139.extern] error: cannot create hash
context for K12
[2022-08-16T12:54:21.404] [748139.extern] error: slurm_send_node_msg:
hash_g_compute: REQUEST_STEP_COMPLETE has error
[2022-08-16T12:54:21.404] [748139.extern] error: Rank 0 failed sending
step completion message directly to slurmctld, retrying

For context, I did a minor upgrade of SLURM yesterday (22.05.2 to 22.05.3),
so it's possible there is an incompatible version somewhere, but if I look
up earlier in the log file I see that the running version of slurmd is
correct and still prints that error right after startup:

[2022-08-15T22:27:59.865] slurmd version 22.05.3 started
[2022-08-15T22:27:59.867] slurmd started on Mon, 15 Aug 2022 22:27:59 +0300
[2022-08-15T22:27:59.869] CPUs=48 Boards=1 Sockets=2 Cores=24
Threads=1 Memory=386525 TmpDisk=71645 Uptime=2679297
CPUSpecList=(null) Fe
aturesAvail=(null) FeaturesActive=(null)
[2022-08-16T02:36:10.020] [748139.batch] plugin_load_from_file:
Incompatible Slurm plugin /usr/lib64/slurm/hash_k12.so version
(22.05.3)
[2022-08-16T02:36:10.020] [748139.batch] error: Couldn't load
specified plugin name for hash/k12: Incompatible plugin version
[2022-08-16T02:36:10.022] [748139.batch] error: cannot create hash
context for K12

I'm running SLURM 22.05.3. The slurmctld is running on CentOS 7, and
compute nodes are on CentOS Stream 8 (not sure if this matters?).

Thanks for any advice,
-- 
Alan Orth
alan.orth at gmail.com
https://picturingjordan.com
https://englishbulgaria.net
https://mjanja.ch
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