Date: Mon, 2 Oct 2017 13:44:48 -0500 From: Adam Vande More <amvandemore@gmail.com> To: Ben RUBSON <ben.rubson@gmail.com> Cc: Freebsd fs <freebsd-fs@freebsd.org> Subject: Re: ZFS stalled after some mirror disks were lost Message-ID: <CA%2BtpaK2=du8Ghrz9N4sfBk2T4tAC9NEdwOoHV3CQz5DOKcMogw@mail.gmail.com> In-Reply-To: <4A0E9EB8-57EA-4E76-9D7E-3E344B2037D2@gmail.com> References: <4A0E9EB8-57EA-4E76-9D7E-3E344B2037D2@gmail.com>
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On Mon, Oct 2, 2017 at 1:12 PM, Ben RUBSON <ben.rubson@gmail.com> wrote:
> Hi,
>
> On a FreeBSD 11 server, the following online/healthy zpool :
>
> home
> mirror-0
> label/local1
> label/local2
> label/iscsi1
> label/iscsi2
> mirror-1
> label/local3
> label/local4
> label/iscsi3
> label/iscsi4
> cache
> label/local5
> label/local6
>
> A sustained read throughput of 180 MB/s, 45 MB/s on each iscsi disk
> according to "zpool iostat", nothing on local disks (strange but I
> noticed that IOs always prefer iscsi disks to local disks).
> No write IOs.
>
> Let's disconnect all iSCSI disks :
> iscsictl -Ra
>
> Expected behavior :
> IO activity flawlessly continue on local disks.
>
Perhaps I'm misunderstanding your setup, but my expected behavior would be
exactly what you see. I think you'd need something more along the lines of:
home
mirror
label/local1
label/iscsi1
mirror
label/local2
label/iscsi2
etc...
--
Adam
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