Re: [Devil-linux-develop] Disks larger than 2TB

[Heiko Z. <he...@zu...>]

Andrzej,

I like this and will add it to my todo list.
Unfortunately I'm extremely busy lately and it may take a while for me  
to work on this.

Heiko

Quoting Andrzej Odyniec <an...@ma...>:

> Dear Heiko,
>
> Drives larger than 2TB is a reality. I bought 4TB drive in a store.
>
> But although the Devil Linux is wonderfully suited to be the file server,
> still can not cope with such drives.
>
> The solution is quite simple, and I propose to use them in the near future.
>
> 1. The structure of the partition table in the BIOS model can not deal with
> larger disks as 2^32 LBA it is 2TB, so we should use UEFI GPT partitioning.
>
> But for the effective operation of such tables kernel should be compiled with
> the setting: CONFIG_EFI_PARTITION=y, otherwise kernel will do not recognise
> such partitions properly and the startup scripts will not cope for example in
> finding on such partitions configuration files.
>
> 2. Although support for GPT partition somewhat ensures parted, but a great
> addition to the package seems to be a GPT fdisk.
>
> (http://downloads.sourceforge.net/project/gptfdisk/gptfdisk/0.8.5/gptfdisk-0.8.5.tar.gz)
>
>
> This package depends on ncurses but if we do not modify its Makefile (I did
> not), to support unicode is needed ICU libraries package.
>
> (http://download.icu-project.org/files/icu4c/49.1.2/icu4c-49_1_2-src.tgz)
>
> I attach my scripts and configurations for these packages.
>
> 3. If we set the legacy_boot flag on GPT partition with Devil-Linux boot, we
> can boot DL on BIOS computer from 3TB drive (tested by me). This can be
> valuable when we run Samba on huge drive and don't want to charge the system
> with additional USB stick. But for this our syslinux build script should be
> modified to grant access to another mbr code, named gptmbr.bin and
> install-on-usb script should test partition table using for example, the
> following test:
>
> [ "`parted -m -s $DEVICE print|grep "^$DEVICE"|awk  
> 'BEGIN{FS=":"}{print $6}'`"
> == "gpt" ]
>
> and selecting appropriate mbr.bin or gptmbr.bin to put into MBR.
>
> Best regards
>
> --
> Andrzej Odyniec
>
>
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-- 

Regards
   Heiko Zuerker
   http://www.devil-linux.org