Date: Tue, 28 Nov 2023 23:26:28 +0100 From: Miroslav Lachman <000.fbsd@quip.cz> To: stable@freebsd.org Cc: Warner Losh <imp@bsdimp.com> Subject: Re: Missing disk partition devices and GPT lables in /dev/ Message-ID: <6b713a9c-c778-45fb-9626-9ad05df28d50@quip.cz> In-Reply-To: <CANCZdfohrv_ghQUp6CZ9S%2BjWRE_ER36pQxq8muhp08vg6kJynA@mail.gmail.com> References: <34a54774-004d-40de-bf0d-2985da5bc908@quip.cz> <CANCZdfohrv_ghQUp6CZ9S%2BjWRE_ER36pQxq8muhp08vg6kJynA@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On 28/11/2023 20:55, Warner Losh wrote:
>
> The problem is a geom design point. When you have multiple aliases that
> you can open, the others are removed from the filesystem view when one
> is opened. It looks like from the above that the mirror-0 was created
> with the diskid, so that's the device that zfs opens, leaving the ada2
> devices removed.
No I really didn't use diskids for pool creation. Those diskids are too
long to type. :) That's why I explicitly post about commands I used:
> # zpool create -m none sys mirror ada2p3 ada3p3
>
> # zpool create -m none tank1 mirror ada2p5 ada3p5
I understand that "some" aliases are hidden when other style of aliases
were used but I never see ada0pX missing even if gpt labels are used.
Also partition p4 prepared for swap was not used by any name style /
alias so I expect to see it there but it is not there. ANd the behavior
is the exact opposite - when I now tried to create swap with diskids,
/dev/gpt/ directory was instantly created a populated with gpt label
aliases:
# gmirror label -F -h gmGswap0 /dev/diskid/DISK-Z3010G8Vp4
/dev/diskid/DISK-Z302YC90p4
# ll /dev/gpt/
total 0
crw-r----- 1 root operator 0xf9 Nov 28 23:22 swapC90
crw-r----- 1 root operator 0x115 Nov 28 23:22 swapG8V
This is normal example from another machine with similar setup:
# ls -1 /dev/ada*
/dev/ada0
/dev/ada0p1
/dev/ada0p2
/dev/ada0p3
/dev/ada1
/dev/ada1p1
/dev/ada1p2
/dev/ada1p3
/dev/ada2
/dev/ada2p2
/dev/ada3
/dev/ada3p2
# ls -1 /dev/gpt/
boot0
boot1
disk0tank0
disk1tank0
ssd0tank1
ssd1tank1
swap0
swap1
# zpool list -v
NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP
DEDUP HEALTH ALTROOT
ssdtank1 199G 51.4G 148G - - 75% 25%
1.00x ONLINE -
mirror-0 199G 51.4G 148G - - 75%
25.8% - ONLINE
gpt/ssd0tank1 200G - - - - -
- - ONLINE
gpt/ssd1tank1 200G - - - - -
- - ONLINE
tank0 1.80T 714G 1.10T - - 52% 38%
1.00x ONLINE -
mirror-0 1.80T 714G 1.10T - - 52%
38.8% - ONLINE
gpt/disk0tank0 1.81T - - - - -
- - ONLINE
gpt/disk1tank0 1.81T - - - - -
- - ONLINE
As you can see there are aliases in /dev/gpt/, there are partitions for
/dev/adaX devices and the pools are made of gpt labels.
This is what I expect from the system in my first post.
I will try to disable disk_ident as suggested by Freddie Cash.
Kind regards
Miroslav Lachman
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?6b713a9c-c778-45fb-9626-9ad05df28d50>