I've been running ceph on a heterogeneous mix of rock64 and rpi4 SBCs. i've
had to do my own builds, as the upstream ones started off with thunked-out
checksumming due to (afaict) different arm feature sets between upstream's
build targets and my SBCs, but other than that one, haven't run into any
arm-specific issues. i've had to clamp down cache size to avoid memory
exhaustion on the smaller boards, and ran into some corruption due to
seemingly a bad interaction between o_direct and zram swap on a particular
kernel version, but those aren't problems unique to ceph on arm.
i should also mention that i'm really very tolerant of latency with this
cluster, as this is just some homelab garbage running on the cheapest
slowest spinning disk available, so there's some bounds on what i'm
asserting.
On Tue, Nov 24, 2020 at 11:24 AM <DHilsbos(a)performair.com> wrote:
Adrian;
I've always considered the advantage of ARM to be the reduction in the
failure domain. Instead of one server with 2 processors, and 2 power
supplies, in 1 case, running 48 disks, you can do 4 cases containing 8
power supplies, and 32 processors running 32 (or 64...) disks.
The architecture is different with ARM; you pair an ARM SoC up with just
one or 2 disks, and you only run the OSD software.
Thank you,
Dominic L. Hilsbos, MBA
Director – Information Technology
Perform Air International Inc.
DHilsbos(a)PerformAir.com
www.PerformAir.com
-----Original Message-----
From: Robert Sander [mailto:r.sander@heinlein-support.de]
Sent: Tuesday, November 24, 2020 5:56 AM
To: ceph-users(a)ceph.io
Subject: [ceph-users] Re: Ceph on ARM ?
Am 24.11.20 um 13:12 schrieb Adrian Nicolae:
Has anyone tested Ceph in such scenario ? Is
the Ceph software
really optimised for the ARM architecture ?
Personally I have not run Ceph on ARM, but there are companies selling
such setups:
https://softiron.com/
https://www.ambedded.com.tw/
Regards
--
Robert Sander
Heinlein Support GmbH
Schwedter Str. 8/9b, 10119 Berlin
http://www.heinlein-support.de
Tel: 030 / 405051-43
Fax: 030 / 405051-19
Zwangsangaben lt. §35a GmbHG:
HRB 93818 B / Amtsgericht Berlin-Charlottenburg,
Geschäftsführer: Peer Heinlein -- Sitz: Berlin
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