Hi all,
thanks a lot for your suggestions. I have checked all of them and
neither the network itself nor any other check indicated any problem.
Alas, I think I know what is going on… ehh… my current zpool has two
vdevs that are actually not even sized, as shown by zpool iostat -v:
zpool iostat -v obelixData 5
capacity operations bandwidth
pool alloc free read write read write
----------------------- ----- ----- ----- ----- ----- -----
obelixData 13,1T 5,84T 36 227 348K 21,5M
c9t210000D023038FA8d0 6,25T 59,3G 21 98 269K 9,25M
c9t210000D02305FF42d0 6,84T 5,78T 15 129 79,2K 12,3M
----------------------- ----- ----- ----- ----- ----- -----
So, the small vdev is actually 99+% full, which is likely to be the root
cause for this issue. Especially, since RAIDs tend to take tremendous
performance hits, when they exceed 90% space utilization.
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