Date: Thu, 23 Oct 2008 09:35:00 -0700 From: Marcel Moolenaar <xcllnt@mac.com> To: =?ISO-8859-1?Q?Marius_N=FCnnerich?= <marius@nuenneri.ch> Cc: Ivan Voras <ivoras@freebsd.org>, freebsd-geom@freebsd.org Subject: Re: [PATCH] Teach geom_label to recognise gpt labels and uuids Message-ID: <29F8C203-E193-4D4A-91E3-2545AA0594BD@mac.com> In-Reply-To: <b649e5e0810230921t36e0df5bj4408fb7466b3dcdb@mail.gmail.com> References: <b649e5e0810230412u5a80ddb8p3955d5b052fa1896@mail.gmail.com> <gdpnsf$8s2$1@ger.gmane.org> <FCAC7DF6-16C6-4960-9FA7-4E9EB4112D18@mac.com> <b649e5e0810230921t36e0df5bj4408fb7466b3dcdb@mail.gmail.com>
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On Oct 23, 2008, at 9:21 AM, Marius Nünnerich wrote:
>> Something to think about: A system can have multiple disks,
>> and therefore multiple GPT tables. Each table has its own
>> UUID (hdr_uuid). This is the UUID of the disk itself in a
>> way. It's probably a good idea to expose that as well:
>> /dev/gpt/${hdr_uuid}/${ent_uuid}
>> /dev/gpt/${hdr_uuid}/${ent_name}
>
> I tried something like this but decided against it, no other g_label
> is like this. If ent_name is not unique on the system only the first
> one is shown, that's consistent with the normal FS labels.
The consistency seems forced, based on a limitation then.
It's quite valuable to have a label for your disk.
>> ese are too long filenames imo. For my taste the ent_uuid is unique
> enough as a filename, but there should probably be a way to show which
> partition has which ent_uuid with `gpart show`.
gpart show has 3 forms:
o standard partition type (gpart show
ns1% gpart show ad5
=> 34 976773101 ad5 GPT (500.1GB)
34 976773101 1 freebsd-zfs (500.1GB)
o raw (scheme-specific) type (gpart show -r)
ns1% gpart show -r ad5
=> 34 976773101 ad5 GPT (500.1GB)
34 976773101 1 516e7cba-6ecf-11d6-8ff8-00022d09712b
(500.1GB)
o partition label (gpart show -l)
ns1% gpart show -l ad5
=> 34 976773101 ad5 GPT (500.1GB)
34 976773101 1 (null) (500.1GB)
There's currently no form for showing a partition ID.
> I know that you try to
> keep the interface consistent and the other partition types don't have
> such a field. Anyway, what do you think about that?
It can be added if deemed useful, but it only really
applies to GPT...
--
Marcel Moolenaar
xcllnt@mac.com
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