Date: Tue, 8 Mar 2016 11:50:01 +0800 From: Fred Liu <fred.fliu@gmail.com> To: Julian Elischer <julian@freebsd.org> Cc: illumos-zfs <zfs@lists.illumos.org>, Discussion list for OpenIndiana <openindiana-discuss@openindiana.org>, omnios-discuss <omnios-discuss@lists.omniti.com>, developer <developer@open-zfs.org>, "zfs-devel@freebsd.org" <zfs-devel@freebsd.org>, illumos-developer <developer@lists.illumos.org>, "freebsd-fs@FreeBSD.org" <freebsd-fs@freebsd.org>, "smartos-discuss@lists.smartos.org" <smartos-discuss@lists.smartos.org>, "zfs-discuss@list.zfsonlinux.org" <zfs-discuss@list.zfsonlinux.org> Subject: Re: [zfs] an interesting survey -- the zpool with most disks you have ever built Message-ID: <CALi05Xz8R2nnwM%2BD_3wuQLeg3Hc9g6ROfRn2H9KczMeeAz0nDg@mail.gmail.com> In-Reply-To: <56DD17CA.90200@freebsd.org> References: <95563acb-d27b-4d4b-b8f3-afeb87a3d599@me.com> <CACTb9pxJqk__DPN_pDy4xPvd6ETZtbF9y=B8U7RaeGnn0tKAVQ@mail.gmail.com> <CAJjvXiH9Wh%2BYKngTvv0XG1HtikWggBDwjr_MCb8=Rf276DZO-Q@mail.gmail.com> <56D87784.4090103@broken.net> <A5A6EA4AE9DCC44F8E7FCB4D6317B1D203178F1DD392@SH-MAIL.ISSI.COM> <CAOjFWZ5YcaAx-v5ZqsoFnHFB1jnvstpXpGObcfewMx75WU0TeQ@mail.gmail.com> <A5A6EA4AE9DCC44F8E7FCB4D6317B1D203178F1DD39E@SH-MAIL.ISSI.COM> <CAOjFWZ7E-LTvUy60UTe2Yi2Egw6%2BbrKZx3r70UbtJJ9haNL5Hg@mail.gmail.com> <CALi05Xwc3dKTsyuaSLeVQSptMp537XeLxXf6Pj%2B15jRtXKXCfA@mail.gmail.com> <CAOjFWZ6YvtpBf2J9F6OTGLh0UfRuBxiY6iF-gNFNAhv=QCB7YQ@mail.gmail.com> <CALi05Xyy3voKVHTR=bHSG5JszQBW4NC0=XL_C-YTQdwzBPwnag@mail.gmail.com> <56DD17CA.90200@freebsd.org>
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2016-03-07 13:55 GMT+08:00 Julian Elischer <julian@freebsd.org>: > On 6/03/2016 9:30 PM, Fred Liu wrote: >> >> 2016-03-05 0:01 GMT+08:00 Freddie Cash <fjwcash@gmail.com>: >> >>> On Mar 4, 2016 2:05 AM, "Fred Liu" <fred.fliu@gmail.com> wrote: >>>> >>>> 2016-03-04 13:47 GMT+08:00 Freddie Cash <fjwcash@gmail.com>: >>>>> >>>>> Currently, I just use a simple coordinate system. Columns are letters= , >>> >>> rows are numbers. >>>>> >>>>> "smartos-discuss@lists.smartos.org" <smartos-discuss@lists.smartos.or= g >>>> >>>> =E3=80=81 >>> >>> developer <developer@open-zfs.org>=E3=80=81 >>> >>> illumos-developer <developer@lists.illumos.org>=E3=80=81 >>> >>> omnios-discuss <omnios-discuss@lists.omniti.com>=E3=80=81 >>> >>> Discussion list for OpenIndiana <openindiana-discuss@openindiana.org>= =E3=80=81 >>> >>> illumos-zfs <zfs@lists.illumos.org>=E3=80=81 >>> >>> "zfs-discuss@list.zfsonlinux.org" <zfs-discuss@list.zfsonlinux.org>=E3= =80=81 >>> >>> "freebsd-fs@FreeBSD.org" <freebsd-fs@freebsd.org>=E3=80=81 >>> >>> "zfs-devel@freebsd.org" <zfs-devel@freebsd.org> >>> >>>>> Each disk is partitioned using GPT with the first (only) partition >>> >>> starting at 1 MB and covering the whole disk, and labelled with the >>> column/row where it is located (disk-a1, disk-g6, disk-p3, etc). >>>> >>>> [Fred]: So you manually pull off all the drives one by one to locate >>> >>> them? >>> >>> When putting the system together for the first time, I insert each disk >>> one at a time, wait for it to be detected, partition it, then label it >>> based on physical location. Then do the next one. It's just part of t= he >>> normal server build process, whether it has 2 drives, 20 drives, or 200 >>> drives. >>> >>> We build all our own servers from off-the-shelf parts; we don't buy >>> anything pre-built from any of the large OEMs. >>> >> [Fred]: Gotcha! >> >> >>>>> The pool is created using the GPT labels, so the label shows in "zpoo= l >>> >>> list" output. >>>> >>>> [Fred]: What will the output look like? >>> >>> From our smaller backups server, with just 24 drive bays: >>> >>> $ zpool status storage >>> >>> pool: storage >>> >>> state: ONLINE >>> >>> status: Some supported features are not enabled on the pool. The pool c= an >>> >>> still be used, but some features are unavailable. >>> >>> action: Enable all features using 'zpool upgrade'. Once this is done, >>> >>> the pool may no longer be accessible by software that does not support >>> >>> the features. See zpool-features(7) for details. >>> >>> scan: scrub canceled on Wed Feb 17 12:02:20 2016 >>> >>> config: >>> >>> >>> NAME STATE READ WRITE CKSUM >>> >>> storage ONLINE 0 0 0 >>> >>> raidz2-0 ONLINE 0 0 0 >>> >>> gpt/disk-a1 ONLINE 0 0 0 >>> >>> gpt/disk-a2 ONLINE 0 0 0 >>> >>> gpt/disk-a3 ONLINE 0 0 0 >>> >>> gpt/disk-a4 ONLINE 0 0 0 >>> >>> gpt/disk-a5 ONLINE 0 0 0 >>> >>> gpt/disk-a6 ONLINE 0 0 0 >>> >>> raidz2-1 ONLINE 0 0 0 >>> >>> gpt/disk-b1 ONLINE 0 0 0 >>> >>> gpt/disk-b2 ONLINE 0 0 0 >>> >>> gpt/disk-b3 ONLINE 0 0 0 >>> >>> gpt/disk-b4 ONLINE 0 0 0 >>> >>> gpt/disk-b5 ONLINE 0 0 0 >>> >>> gpt/disk-b6 ONLINE 0 0 0 >>> >>> raidz2-2 ONLINE 0 0 0 >>> >>> gpt/disk-c1 ONLINE 0 0 0 >>> >>> gpt/disk-c2 ONLINE 0 0 0 >>> >>> gpt/disk-c3 ONLINE 0 0 0 >>> >>> gpt/disk-c4 ONLINE 0 0 0 >>> >>> gpt/disk-c5 ONLINE 0 0 0 >>> >>> gpt/disk-c6 ONLINE 0 0 0 >>> >>> raidz2-3 ONLINE 0 0 0 >>> >>> gpt/disk-d1 ONLINE 0 0 0 >>> >>> gpt/disk-d2 ONLINE 0 0 0 >>> >>> gpt/disk-d3 ONLINE 0 0 0 >>> >>> gpt/disk-d4 ONLINE 0 0 0 >>> >>> gpt/disk-d5 ONLINE 0 0 0 >>> >>> gpt/disk-d6 ONLINE 0 0 0 >>> >>> cache >>> >>> gpt/cache0 ONLINE 0 0 0 >>> >>> gpt/cache1 ONLINE 0 0 0 >>> >>> >>> errors: No known data errors >>> >>> The 90-bay systems look the same, just that the letters go all the way = to >>> p (so disk-p1 through disk-p6). And there's one vdev that uses 3 drive= s >>> from each chassis (7x 6-disk vdev only uses 42 drives of the 45-bay >>> chassis, so there's lots of spares if using a single chassis; using two >>> chassis, there's enough drives to add an extra 6-disk vdev). >>> >> [Fred]: It looks like the gpt label shown in "zpool status" only works i= n >> FreeBSD/FreeNAS. Are you using FreeBSD/FreeNAS? I can't find the similar >> possibilities in Illumos/Linux. > > > Ah that's a trick.. FreeBSD exports an actual /dev/gpt/{you-label-goes-he= re} > for each labeled partition it finds. > So it's not ZFS doing anything special.. it's what FreeBSD is calling the > partition. > Super cool! Fred
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