Date: Fri, 23 Dec 2011 20:07:16 +0100 From: Johan Hendriks <joh.hendriks@gmail.com> To: Peter <fbsdq@peterk.org>, FreeBSD <freebsd-questions@freebsd.org> Subject: Re: gpart, modified label does not show up in /dev/gpt. Message-ID: <4EF4D164.1050005@gmail.com> In-Reply-To: <23e2a89872f6805695ac526665c4d60f.squirrel@pop.pknet.net> References: <4EF4C0E4.7080902@gmail.com> <23e2a89872f6805695ac526665c4d60f.squirrel@pop.pknet.net>
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Peter schreef:
>> Hello all.
>>
>> I just installed FreeBSD 9.0 RC2 and upgraded to 9.0 RC3.
>>
>> I used the standard GPT disk layout at install.
>>
>> Now i want to set labels for my disk, so that i can swap around disks a
>> little more easy.
>> So reading through the man page it told me to use gpart modify -i -l
>>
>> The layout is as follows:
>> test# gpart status
>> Name Status Components
>> da0p1 OK da0
>> da0p2 OK da0
>> da0p3 OK da0
>>
>> test# gpart list | grep label
>> label: (null)
>> label: (null)
>> label: (null)
>>
>> Now i modified the gpart labels.
>>
>> test# gpart modify -i1 -l bootpart da0
>> da0p1 modified
>> test# gpart modify -i2 -l rootpart da0
>> da0p2 modified
>> test# gpart modify -i3 -l swap da0
>> da0p3 modified
>>
>> Ok all looks fine.
>> Now lets see if i can use my labels
>>
>> test# cd /dev/gpt
>> /dev/gpt: No such file or directory.
>>
>> Well it does not create my labels
>> I did check if the labels where there
>>
>> test# gpart list | grep label
>> label: bootpart
>> label: rootpart
>> label: swap
>>
>> So i rebooted the machine!
>> But after a reboot, still no /dev/gpt.
>>
>> So why is it not creating my labels!
>> Am i missing a step?
>>
>> Thanks for your time.
>>
>> And before i forget, merry christmas to all, and a wonderful 2012.
>>
>> regards,
>> Johan Hendriks
>>
> I was going to say if you mount /dev/da0p? its /dev/gpt/label disappears,
> and since all the partition are mounted already [/dev/gpt/ is empty], then
> /dev/gpt is maybe also removed.......but /dev/gpt/bootpart is not mounted
> and should still show up.
>
>
> When you ran the 'gpart' commands, did you set the sysctl geom debug
> variable? [sysctl kern.geom.debugflags=17]
> After the reboot, are the labels still there? [gpart list | grep label]
>
> ]Peter[
>
I placed some other disk in (for the zfs pool)
Now i have /dev/gpt/bootpart, but not the labels for swap and /
I did not use the sysctl value.
And yes the labels are stil in place.
test# cd /dev/gpt
test# ls -al
total 1
dr-xr-xr-x 2 root wheel 512 Dec 23 20:02 .
dr-xr-xr-x 10 root wheel 512 Dec 23 21:02 ..
crw-r----- 1 root operator 0, 123 Dec 23 20:02 bootpart
test# gpart list | grep label
label: bootpart
label: rootpart
label: swap
test#
I will try the debugflag option.
But it should not be nessacary i guess.
thanks
regards
Johan
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