increasing grubenv file size

increasing grubenv file size

[Gnanasekar Loganathan]

Hi All,

Is that possible to increase the size of grubenv file?
if so, please share the steps/procedure to increase the size of the
grubenv file.

Thanks,
Gnana

Re: increasing grubenv file size

[Colin Watson]

On Wed, Dec 01, 2010 at 10:45:15AM +0530, Gnanasekar Loganathan wrote:
> Is that possible to increase the size of grubenv file?
> if so, please share the steps/procedure to increase the size of the
> grubenv file.

It's currently fixed in code, although I think only the grub-editenv
utility actually cares.  Could you share what you're trying to do with
the environment block for which the default size of 1024 is inadequate?

-- 
Colin Watson                                       [cjwatson@ubuntu.com]

Re: increasing grubenv file size

[Gnanasekar Loganathan]

Hi Colin,

We are storing environment variables like below:

macaddr=ab:cd:ef:12:34:56
bootfile=image.gnana
ipaddr=172.30.16.203
netmask=255.255.0.0
serverip=172.30.16.90
gatewayip=172.16.1.1
ftpuser=username
ftppasswd=password
bootcmd=flash(0,0):XXXX-OS-8-3-9-23.bin;default_boot;boot

like wise we adding more environment variables in future.

If the space is not enough for storing more variables we have to
increase the size. If unable to increase the size we have to find
alternate way to store these evnironment variables.

Thanks,
Gnana




On Wed, Dec 1, 2010 at 3:54 PM, Colin Watson <cjwatson@ubuntu.com> wrote:
> On Wed, Dec 01, 2010 at 10:45:15AM +0530, Gnanasekar Loganathan wrote:
>> Is that possible to increase the size of grubenv file?
>> if so, please share the steps/procedure to increase the size of the
>> grubenv file.
>
> It's currently fixed in code, although I think only the grub-editenv
> utility actually cares.  Could you share what you're trying to do with
> the environment block for which the default size of 1024 is inadequate?
>
> --
> Colin Watson                                       [cjwatson@ubuntu.com]
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>

Re: increasing grubenv file size

[Jordan Uggla]

On Wed, Dec 1, 2010 at 8:57 PM, Gnanasekar Loganathan
<l.gnanasekar@gmail.com> wrote:
> Hi Colin,
>
> We are storing environment variables like below:
>
> macaddr=ab:cd:ef:12:34:56
> bootfile=image.gnana
> ipaddr=172.30.16.203
> netmask=255.255.0.0
> serverip=172.30.16.90
> gatewayip=172.16.1.1
> ftpuser=username
> ftppasswd=password
> bootcmd=flash(0,0):XXXX-OS-8-3-9-23.bin;default_boot;boot

Are these environment variables being *set* from within grub itself,
or by an administrator booted into an OS? For persistent storage of
environment variables you can simply set the variables with the
grub.cfg, or in a separate cfg file which is sourced by the primary
grub.cfg (like /boot/grub/custom.cfg). Using a normal text file you
can include as many variables as you want, expanding as needed.

That's not to say that it will never be useful to have a larger
grubenv, but it doesn't sound like it's needed in your case.

-- 
Jordan Uggla (Jordan_U on irc.freenode.net)

Re: increasing grubenv file size

[Gnanasekar Loganathan]

Hi Jordan,

Hope so all these environment variables being set from the grub itself
using "set".
Anyhow saving in separate file option is sounds good.
Thanks Jordan.

Thanks,
Gnana


On Thu, Dec 2, 2010 at 11:56 AM, Jordan Uggla <jordan.uggla@gmail.com> wrote:
> On Wed, Dec 1, 2010 at 8:57 PM, Gnanasekar Loganathan
> <l.gnanasekar@gmail.com> wrote:
>> Hi Colin,
>>
>> We are storing environment variables like below:
>>
>> macaddr=ab:cd:ef:12:34:56
>> bootfile=image.gnana
>> ipaddr=172.30.16.203
>> netmask=255.255.0.0
>> serverip=172.30.16.90
>> gatewayip=172.16.1.1
>> ftpuser=username
>> ftppasswd=password
>> bootcmd=flash(0,0):XXXX-OS-8-3-9-23.bin;default_boot;boot
>
> Are these environment variables being *set* from within grub itself,
> or by an administrator booted into an OS? For persistent storage of
> environment variables you can simply set the variables with the
> grub.cfg, or in a separate cfg file which is sourced by the primary
> grub.cfg (like /boot/grub/custom.cfg). Using a normal text file you
> can include as many variables as you want, expanding as needed.
>
> That's not to say that it will never be useful to have a larger
> grubenv, but it doesn't sound like it's needed in your case.
>
> --
> Jordan Uggla (Jordan_U on irc.freenode.net)
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> http://lists.gnu.org/mailman/listinfo/grub-devel
>