freebsd stable - Jan 2011 - geom_label, fstab without device names & swap partition?

Hello, Stable.

  Now, with "newfs -L name", geom_label and /dev/ufs/* it is possible
to not use device names for FSes in "/etc/fstab" at all. But what to
do with swap partitions? How to say, that I want swap on
"/dev/ada0s1b" or "/dev/ad0s1b" whatever name it has now?

-- 
// Black Lion AKA Lev Serebryakov <lev@serebryakov.spb.ru>

On Wed, Jan 12, 2011 at 09:02:01PM +0300, Lev Serebryakov
wrote:
> Hello, Stable.
> 
>   Now, with "newfs -L name", geom_label and /dev/ufs/* it is
possible
> to not use device names for FSes in "/etc/fstab" at all. But what
to
> do with swap partitions? How to say, that I want swap on
> "/dev/ada0s1b" or "/dev/ad0s1b" whatever name it has
now?
Have you tried using glabel(8)?  It allows you to assign a name
to a slice.  The slice should not be in use at the time, and if it has
a filesystem on it you may have problems as glabel(8) uses the last block
for a data store.

Regards,

Gary

On 12.01.2011 21:02, Lev Serebryakov wrote:
> Hello, Stable.
> 
>   Now, with "newfs -L name", geom_label and /dev/ufs/* it is
possible
> to not use device names for FSes in "/etc/fstab" at all. But what
to
> do with swap partitions? How to say, that I want swap on
> "/dev/ada0s1b" or "/dev/ad0s1b" whatever name it has
now?
You can label swap partitions with glabel(8) and use this label in
fstab.

-- 
WBR, Andrey V. Elsukov

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2011/1/12 Lev Serebryakov
<lev@serebryakov.spb.ru>:
> ?Now, with "newfs -L name", geom_label and /dev/ufs/* it is
possible
> to not use device names for FSes in "/etc/fstab" at all. But what
to
> do with swap partitions? How to say, that I want swap on
> "/dev/ada0s1b" or "/dev/ad0s1b" whatever name it has
now?
Use glabel(8) to label the device:

# glabel label swap ada0s1b

Then point to the label in /etc/fstab:

/dev/label/swap    swap   sw ...


-- 
Freddie Cash
fjwcash@gmail.com

On Wed, Jan 12, 2011 at 1:54 PM, Freddie Cash <fjwcash@gmail.com>
wrote:
> 2011/1/12 Lev Serebryakov <lev@serebryakov.spb.ru>:
>> ?Now, with "newfs -L name", geom_label and /dev/ufs/* it is
possible
>> to not use device names for FSes in "/etc/fstab" at all. But
what to
>> do with swap partitions? How to say, that I want swap on
>> "/dev/ada0s1b" or "/dev/ad0s1b" whatever name it
has now?
>
> Use glabel(8) to label the device:
>
> # glabel label swap ada0s1b
On a side note there is not a simple way to glabel mounted filesystem
>
> Then point to the label in /etc/fstab:
>
> /dev/label/swap ? ?swap ? sw ...
>
>
> --
> Freddie Cash
> fjwcash@gmail.com
> _______________________________________________
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>
glabel is also great for doing silly things like things like this

glabel label leftdrive0 /dev/ad4
glabel label rightdrive0 /dev/ad5
gmirror label -v -b load raid1  leftdrive0 rightdrive0

this way when you get a gmirror status you can easily tell which drive
is doing what, red rebuilding etc .




-- 

mark saad | nonesuch@longcount.org