Date: Wed, 19 Nov 2014 16:55:33 +0100 From: "Patrick M. Hausen" <hausen@punkt.de> To: "freebsd-stable@freebsd.org List" <freebsd-stable@freebsd.org> Subject: Re: 10.1 geom "diskid" Message-ID: <166BD891-B686-41F9-A741-9C7E7D989CB8@punkt.de> In-Reply-To: <FE4F6E61-C332-40A4-A913-281505819FA7@punkt.de> References: <FE4F6E61-C332-40A4-A913-281505819FA7@punkt.de>
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Now it's getting decidedly weird:
> Am 19.11.2014 um 16:40 schrieb Patrick M. Hausen <hausen@punkt.de>:
>=20
> Hi, all,
>=20
> next question, sorry. I just created a fresh 10.1 installation
> with ZFS. With the last reboot after adding dedicated SSD
> based l2arc and zil, the underlying devices are referred to
> by "diskid" instead of the GPT labels I have first been using:
>=20
> NAME STATE READ WRITE CKSUM
> zroot ONLINE 0 0 0
> mirror-0 ONLINE 0 0 0
> gpt/disk0 ONLINE 0 0 0
> gpt/disk1 ONLINE 0 0 0
> logs
> diskid/DISK-BTTV334403R7200GGNp2 ONLINE 0 0 0
> cache
> diskid/DISK-BTTV334403R7200GGNp1 ONLINE 0 0 0
>=20
> I can live with that, but I do not understand why the ada2 device
> changed from gpt/* to diskid/* while the others did not?
>=20
> /dev/gpt entries are not even present for ada2, neither are ada2p?
>=20
> At least the system could try to be consistent ;-)
gnop create -S 4096 /dev/diskid/DISK-BTTV334403R7200GGNp3
zpool create ssd /dev/diskid/DISK-BTTV334403R7200GGNp3.nop
zpool export ssd
gnop destroy /dev/diskid/DISK-BTTV334403R7200GGNp3.nop
zpool import ssd
zpool status
pool: ssd
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
ssd ONLINE 0 0 0
gpt/ssd ONLINE 0 0 0
errors: No known data errors
WTF? Now it's referring to ada2p3 as gpt/ssd again. Of course the first =
2
partitions are still diskid/DISK-BTTV334403R7200GGNp1 and p2, since
I have not changed anything about the "zroot" pool.
OK, reboot ...
zpool status
...
NAME STATE READ WRITE CKSUM
ssd ONLINE 0 0 0
diskid/DISK-BTTV334403R7200GGNp3 ONLINE 0 0 0
Now all 3 partitions on the SSD are addressed by diskid. The two mirror
vdevs by GPT label, and, needless to say, the two components of my swap
gmirror by legacy devices:
root@seleniumhub:~ # gmirror status
Name Status Components
mirror/swap COMPLETE ada0p2 (ACTIVE)
ada1p2 (ACTIVE)
Although I created the mirror using /dev/gpt/swap0 and swap1, of course =
;-)
Please do not consider this a major complaint. As long as everything =
works,
I'm perfectly happy. But I'd like to understand what is going on here.
All the recent Ubuntu installs I run refer to disks exclusively by UUID =
and here
we have three different kinds of devices in a single install. That =
*might*
scare away someone some time ...
Kind regards
Patrick
--=20
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