Re: NFS mount lockups since about a month ago

[Terry Barnaby <terry1@xxxxxxxxxxx>]

    and iostats:

04/10/21 10:51:14
avg-cpu:  %user   %nice %system %iowait  %steal   %idle
          2.09    0.00    1.56    0.02    0.00   96.33

Device            r/s     rkB/s   rrqm/s  %rrqm r_await rareq-sz     w/s     wkB/s   wrqm/s  %wrqm w_await wareq-sz     d/s     dkB/s   drqm/s  %drqm d_await dareq-sz     f/s f_await  aqu-sz  %util
nvme0n1          0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00    0.00    0.00   0.00
nvme1n1          0.00      0.00     0.00   0.00    0.00     0.00    7.10     39.20     1.40  16.47    1.68     5.52    0.00      0.00     0.00   0.00    0.00     0.00    0.10    1.00    0.01   0.19
sda              0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00    0.00    0.00   0.00
zram0            0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00    0.00    0.00   0.00


04/10/21 10:51:40
avg-cpu:  %user   %nice %system %iowait  %steal   %idle
          2.31    0.00    1.60   10.86    0.00   85.24

Device            r/s     rkB/s   rrqm/s  %rrqm r_await rareq-sz     w/s     wkB/s   wrqm/s  %wrqm w_await wareq-sz     d/s     dkB/s   drqm/s  %drqm d_await dareq-sz     f/s f_await  aqu-sz  %util
nvme0n1          0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00    0.00    0.00   0.00
nvme1n1          0.00      0.00     0.00   0.00    0.00     0.00    0.71      3.43     0.15  17.39   12.16     4.84    0.00      0.00     0.00   0.00    0.00     0.00    0.04    1.00    0.01   0.19
sda              0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00    0.00    0.00   0.00
zram0            0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00    0.00    0.00   0.00


04/10/21 10:51:50
avg-cpu:  %user   %nice %system %iowait  %steal   %idle
          2.59    0.00    1.69    0.17    0.00   95.55

Device            r/s     rkB/s   rrqm/s  %rrqm r_await rareq-sz     w/s     wkB/s   wrqm/s  %wrqm w_await wareq-sz     d/s     dkB/s   drqm/s  %drqm d_await dareq-sz     f/s f_await  aqu-sz  %util
nvme0n1          0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00    0.00    0.00   0.00
nvme1n1          0.00      0.00     0.00   0.00    0.00     0.00    1.40     11.20     1.40  50.00   12.36     8.00    0.00      0.00     0.00   0.00    0.00     0.00    0.20    1.00    0.02   0.50
sda              0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00    0.00    0.00   0.00
zram0            0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00      0.00     0.00   0.00    0.00     0.00    0.00    0.00    0.00   0.00

So nothing obvious on the disks of the server. I am pretty sure this is an NFS issue ...

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