[Voyage-linux] Voyage 0.9 installation problem with Grub

[Joshua Anhalt]

If you're using the machine in the intended Voyage read-only mode, then no, ext4 doesn't have much use.  (It supports the TRIM function for SSDs, but if the disk is read-only then no files are being deleted, the TRIM function isn't being used.)

If you want a writable partition, then ext4 has some very powerful barrier mechanisms that provides fairly reliable disk writes in a bad environment.  Voyage already supports ext4 partitions as long as it doesn't include /boot.

If you want a writable root partition, then ext4 has a strong case.  But then there is less of a reason to use Voyage.

Joshua

On Oct 16, 2012, at 3:48 AM, Michael Fung wrote:

> Is there any points in using ext4 for /boot or even the root fs in the alix environment? I hate grub2.
> 
> I only use ext4 on my usb HDD.
> 
> Rgds,
> Michael
> 
> On 10/15/2012 2:16 PM, Kim-man 'Punky' TSE wrote:
>> Hi all,
>> 
>> To support ext4, I think there are 2 options:
>> 
>> 1. modify voyage-update related scripts to support grub2, or
>> 2. At installation, upgrade grub to grub2.
>> 
>> I really don't want to touch existing grub1 code for installation.  I
>> would rather run upgrade-from-grub-legacy at installation.
>> 
>> http://wiki.debian.org/Grub#Upgrading_from_v1_to_v2
>> 
>> Any volunteer?
>> 
>> Regards,
>> Punky
>> 
>> On 10/15/2012 10:44 AM, Joshua Anhalt wrote:
>>> Grub 1 (the default in Voyage) does not supporting booting to an ext4
>>> filesystem
>>> <https://ext4.wiki.kernel.org/index.php/Ext4_Howto#Booting_from_an_ext4_filesystem>.
>>> (There are some efforts to support that, but I don't think those
>>> patches are present in the current Voyage grub1.)
>>> 
>>> You can install a recent grub2, or make a separate ext2/3 formatted
>>> /boot partition.
>>> 
>>> Joshua
>>> 
>>> On Oct 13, 2012, at 5:51 AM, kmpirkos at ece.upatras.gr
>>> <mailto:kmpirkos at ece.upatras.gr> wrote:
>>> 
>>>> Thank you for your prompt reply. Using only one partition solved the
>>>> problem. The OS loads nicely.
>>>> However, is it possible to use a journaling file system like ext4
>>>> instead of ext2?
>>>> I tried altering format-cf.sh and use mkfs.ext4 instead of mkfs.ext2
>>>> and again, the grub> command prompt appears.
>>>> 
>>>> The reason I prefer ext4 is to avoid inode reference problems after
>>>> sudden power-offs. Do you think that ext2 along with the read-only
>>>> mounting is enough? If so, after I shrink the main ext2 partition,
>>>> can I make an ext4 partition in the remaining space? I need
>>>> read-write access to the second partition.
>>>> 
>>>> Regards,
>>>> Kostas Birkos
>>>> 
>>>> 
>>>> 
>>>> Arun Khan  wrote:
>>>>>               On Fri, Oct 12, 2012 at 11:25 PM,
>>>>> <kmpirkos at ece.upatras.gr <mailto:kmpirkos at ece.upatras.gr>> wrote:
>>>>>> Hello,
>>>>>> 
>>>>>> I have a problem while trying to install Voyage 0.9 in a CF card.
>>>>>> Using GParted in Ubuntu 12.04, I created 2 primary partitions in
>>>>>> the CF.
>>>>>> 2 GB for the OS and another 6 GB for storage. During the installation
>>>>>> process, I select the first partition to install Voyage.
>>>>> 
>>>>> Rather than pre-partition the CF hard disk, let the VL installer
>>>>> choose the *entire* CF disk for the first partition.
>>>>> After completing the installation, you can shrink the first partition
>>>>> to your desired size and free up the rest.
>>>>> 
>>>>> Also update the grub installation on the CF card.
>>>>> 
>>>>> Let us know if this solves your problem.
>>>>> 
>>>>> -- Arun Khan
>>>>> 
>>>>> _______________________________________________
>>>>> Voyage-linux mailing list
>>>>> Voyage-linux at list.voyage.hk <mailto:Voyage-linux at list.voyage.hk>
>>>>> http://list.voyage.hk/mailman/listinfo/voyage-linux
>>>>> 
>>>> 
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>>> 
>>> 
>>> 
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>> 
>> 
> 
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