Is there a way to programmatically list all the hard disk devices
attached to a solaris box?

"format" command doesn't help, as it requires user input or prior
knowledge of the existance of a particular disk.

What I'm looking for is something like the solaris equivalent of
/proc/partitions that's present on linux.

Any suggestions?

Thanks,
-anoop

Hi Anoop
format whit the option print and partiotions (P - P), shows all the
fisical partition in the disk.
I don't know what /proc/partitions in linux does.
But for example in solaris U can create a file called for example
ListPartiotions like this.

#more ListPartiotions
p
p

And try the format command with this option:

#format -d c0t0d0 < ListPartiotions

Assuming that c0t0d0 is your Disk.

If you want you can do a simply shell that do this for all disks that u
have!

-----------------------------------------
Ciao################
-----------------------------------------

Anoop ha scritto:

> Is there a way to programmatically list all the hard disk devices
> attached to a solaris box?
>
> "format" command doesn't help, as it requires user input or prior
> knowledge of the existance of a particular disk.
>
> What I'm looking for is something like the solaris equivalent of
> /proc/partitions that's present on linux.
>
> Any suggestions?
>
> Thanks,
> -anoop

Thanks. But what I really need is a way to find out what disks are
already available on the machine. This means I don't know that c0t0d0
is a hard disk, and I need to find out.

How would I do that in a non-interactive more?

On linux, /proc/partitions is just a file which lists all the
partitions of the root device (including the 0th partition itself). For
example, if Linux is installed on the first scsi disk, then
/proc/partitions will contain


major minor #blocks name

8 0 78150744 sda
8 1 8193118 sda1
8 2 4096575 sda2
8 3 1020127 sda3
8 4 1 sda4
8 5 64838308 sda5

This means that my root disk is the first entry sda (ie /dev/sda). How
do I get similar information on solaris, either by running a command or
looking into a file?

Thanks,
-anoop

erforcella@gmail.com wrote:
> Hi Anoop
> format whit the option print and partiotions (P - P), shows all the
> fisical partition in the disk.
> I don't know what /proc/partitions in linux does.
> But for example in solaris U can create a file called for example
> ListPartiotions like this.
>
> #more ListPartiotions
> p
> p
>
> And try the format command with this option:
>
> #format -d c0t0d0 < ListPartiotions
>
> Assuming that c0t0d0 is your Disk.
>
> If you want you can do a simply shell that do this for all disks that u
> have!
>
> -----------------------------------------
> Ciao################
> -----------------------------------------
>
> Anoop ha scritto:
>
> > Is there a way to programmatically list all the hard disk devices
> > attached to a solaris box?
> >
> > "format" command doesn't help, as it requires user input or prior
> > knowledge of the existance of a particular disk.
> >
> > What I'm looking for is something like the solaris equivalent of
> > /proc/partitions that's present on linux.
> >
> > Any suggestions?
> >
> > Thanks,
> > -anoop

Anoop <anoop.rajendra@gmail.com> wrote:
> This means that my root disk is the first entry sda (ie /dev/sda). How
> do I get similar information on solaris, either by running a command or
> looking into a file?

[Please don't top post. Trim down the message you are answering to the
relevant information]

You can either call "format >disklist </dev/null" and count the number
of disk lines, like:

disklist=$(format </dev/null | nawk '/[0-9]+\. c[0-9]/ { print $2"s2"}')


Or call prtvtoc for every entry you find in /dev/rdsk/*s2. If prtvtoc
returns an error there was once a disk at this address but has been gone
(to clean-up call "devfsadm -C"), like:

disklist=""
for disk in /dev/rdsk/*s2; do
prtvtoc ${disk} >/dev/null 2>&1 && disklist="${disklist} ${disk}"
done


--
Daniel

Hi
you can know the disks available in the solaris box for example with:
# iostat -En

# df -k
U can see where the root is mounted

or in the /etc/mnttab file

Hope this help!

##########
Ciao
##########



Anoop ha scritto:

> Thanks. But what I really need is a way to find out what disks are
> already available on the machine. This means I don't know that c0t0d0
> is a hard disk, and I need to find out.
>
> How would I do that in a non-interactive more?
>
> On linux, /proc/partitions is just a file which lists all the
> partitions of the root device (including the 0th partition itself). For
> example, if Linux is installed on the first scsi disk, then
> /proc/partitions will contain
>
>
> major minor #blocks name
>
> 8 0 78150744 sda
> 8 1 8193118 sda1
> 8 2 4096575 sda2
> 8 3 1020127 sda3
> 8 4 1 sda4
> 8 5 64838308 sda5
>
> This means that my root disk is the first entry sda (ie /dev/sda). How
> do I get similar information on solaris, either by running a command or
> looking into a file?
>
> Thanks,
> -anoop
>
> erforcella@gmail.com wrote:
> > Hi Anoop
> > format whit the option print and partiotions (P - P), shows all the
> > fisical partition in the disk.
> > I don't know what /proc/partitions in linux does.
> > But for example in solaris U can create a file called for example
> > ListPartiotions like this.
> >
> > #more ListPartiotions
> > p
> > p
> >
> > And try the format command with this option:
> >
> > #format -d c0t0d0 < ListPartiotions
> >
> > Assuming that c0t0d0 is your Disk.
> >
> > If you want you can do a simply shell that do this for all disks that u
> > have!
> >
> > -----------------------------------------
> > Ciao################
> > -----------------------------------------
> >
> > Anoop ha scritto:
> >
> > > Is there a way to programmatically list all the hard disk devices
> > > attached to a solaris box?
> > >
> > > "format" command doesn't help, as it requires user input or prior
> > > knowledge of the existance of a particular disk.
> > >
> > > What I'm looking for is something like the solaris equivalent of
> > > /proc/partitions that's present on linux.
> > >
> > > Any suggestions?
> > >
> > > Thanks,
> > > -anoop

Thanks, Daniel.
Daniel Rock wrote:
> Anoop <anoop.rajendra@gmail.com> wrote:
> > This means that my root disk is the first entry sda (ie /dev/sda). How
> > do I get similar information on solaris, either by running a command or
> > looking into a file?
>
> [Please don't top post. Trim down the message you are answering to the
> relevant information]
>
> You can either call "format >disklist </dev/null" and count the number
> of disk lines, like:
>
> disklist=$(format </dev/null | nawk '/[0-9]+\. c[0-9]/ { print $2"s2"}')

This is the exact command I was looking for. (Why the hell didn't I
think of /dev/null??? Aaargh!!!)

In any case, do you know if this command is available in a jumpstart
installation environment?


>
>
> Or call prtvtoc for every entry you find in /dev/rdsk/*s2. If prtvtoc
> returns an error there was once a disk at this address but has been gone
> (to clean-up call "devfsadm -C"), like:
>
> disklist=""
> for disk in /dev/rdsk/*s2; do
> prtvtoc ${disk} >/dev/null 2>&1 && disklist="${disklist} ${disk}"
> done
>
>
> --
> Daniel

Thanks,
Anoop

Also, I have another question

The command

disklist=$(format </dev/null | nawk '/[0-9]+\. c[0-9]/ { print $2}')

worked perfectly.

However, disklist is going to give me the list of all disks attached to
the system. I need only the root disk, or the disk that the machine
boots from? Is this always the first entry (or the zeroeth entry)?

Thanks,
Anoop

Anoop <anoop.rajendra@gmail.com> wrote:
> Also, I have another question
>
> The command
>
> disklist=$(format </dev/null | nawk '/[0-9]+\. c[0-9]/ { print $2}')
>
> worked perfectly.
>
> However, disklist is going to give me the list of all disks attached to
> the system. I need only the root disk, or the disk that the machine
> boots from? Is this always the first entry (or the zeroeth entry)?

df -k / | awk '{ fs=$1 } END { print fs }'

(this will save you a "tail -1")

But beware: It doesn't have to be a "real" device. It could also be a SVM
device, a VxVM volume or (in the future) a ZFS.

--
Daniel