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Date:      Sun, 6 Oct 2019 23:25:10 +0200
From:      Paul Mather <paul@gromit.dlib.vt.edu>
To:        Andriy Gapon <avg@FreeBSD.org>
Cc:        freebsd-stable@FreeBSD.org
Subject:   Re: ZFS with 32-bit, non-x86 kernel
Message-ID:  <C4C67028-A331-4D16-B362-B04EC023281E@gromit.dlib.vt.edu>
In-Reply-To: <bdfecbf4-00c6-e104-4090-c1013bac5a7f@FreeBSD.org>
References:  <bdfecbf4-00c6-e104-4090-c1013bac5a7f@FreeBSD.org>

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On Oct 4, 2019, at 4:05 PM, Andriy Gapon <avg@FreeBSD.org> wrote:

> Does anyone use ZFS with a 32-bit kernel, that is also not i386 ?
> If you do, could you please let me know?  Along with uname -rmp =
output.
> Thank you!


I am using a Root-on-ZFS setup on a FreeBSD/arm 12-STABLE Raspberry Pi 2 =
system (as well as on arm64 on a Raspberry Pi 3):

# uname -rmp
12.1-STABLE arm armv7

It has two ZFS pools, one of which I use as a destination for various =
local backups:

# zpool list
NAME   SIZE  ALLOC   FREE  CKPOINT  EXPANDSZ   FRAG    CAP  DEDUP  =
HEALTH  ALTROOT
data  3.62T   778G  2.86T        -         -     0%    20%  1.00x  =
ONLINE  -
sys   7.50G   460M  7.05G        -         -     5%     5%  1.00x  =
ONLINE  -


I have vfs.zfs.arc_max=3D"384M" set in /boot/loader.conf.  The Pi 2 has =
1 GB RAM.

The system has worked very well so far---it seems more stable than the =
UFS-based system it started out life as.  I converted it using the =
writeup that Bernd Walter posted to freebsd-arm back in late February, =
2019: =
https://lists.freebsd.org/pipermail/freebsd-arm/2019-February/019455.html

Scrubbing the "data" pool takes quite a while, though.  The last one =
(completed on 2019-09-23) took 12 days 18:26:31. :-)

Cheers,

Paul.=



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