Re: ZFS operations hanging, but no visible errors?

Reply: Chris Ross : "Re: ZFS operations hanging, but no visible errors?"
In reply to: Chris Ross : "Re: ZFS operations hanging, but no visible errors?"
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From: Andriy Gapon <avg_at_FreeBSD.org>
Date: Sun, 07 Nov 2021 08:35:07 UTC

On 05/11/2021 18:59, Chris Ross wrote:
> Running prostate -kk on the rsync that was hung, then killed, then SIGKILL’d shows:
> 
> procstat -kk 35220
>    PID    TID COMM                TDNAME              KSTACK
> 35220 102499 rsync               -                   mi_switch+0xc1 _sleep+0x1cb vm_wait_doms+0xe2 vm_wait_domain+0x51 vm_domain_alloc_fail+0x86 vm_page_alloc_domain_after+0x7e uma_small_alloc+0x58 keg_alloc_slab+0xba zone_import+0xee zone_alloc_item+0x6f abd_alloc_chunks+0x61 abd_alloc+0x102 arc_hdr_alloc_abd+0xb0 arc_hdr_alloc+0x11e arc_read+0x4f4 dbuf_issue_final_prefetch+0x108 dbuf_prefetch_impl+0x3d0 dmu_zfetch+0x558

Looks like the system is out of memory.
It seems that you already established that.

-- 
Andriy Gapon