FAI disk config problem

[Sylvain Milot]

Hello,

sorry for top-posting ...

I would guess that the "align-at" feature is set to 1M (2048 sectors)
by default for this setup-storage version ? I can't say for sure as I
don't use this version ... still using 3.4.8, but I always set align-at:1M.

Maybe you'd like to read this document if unfamiliar:
http://www.ibm.com/developerworks/linux/library/l-4kb-sector-disks/

or this even:
http://www.novell.com/support/kb/doc.php?id=7007193

You could possibly use align-at:1K to force it, if that's really what
you want ?

I'll let others answer your other question.

Best,

Sylvain

On Wed, 10 Oct 2012, RU Admin wrote:

>
> I'm running Debian Wheezy with FAI 4.0.3 and for my disk_config I'm using the 
> following:
>
> disk_config disk1 disklabel:msdos fstabkey:uuid bootable:1
> primary  /            20G      ext4  rw,noatime,errors=remount-ro 
> tuneopts="-c 0 -i 0"
> logical  /var         10G      ext4  rw,noatime 
> createopts="-L var -m 5"     tuneopts="-c 0 -i 0"
> logical  swap         8G       swap  sw
> logical  /tmp         20G      ext4  rw,noatime 
> createopts="-L tmp -m 0"     tuneopts="-c 0 -i 0"
> logical  /home        1G       ext4  rw,noatime,nosuid 
> createopts="-L home -m 1"    tuneopts="-c 0 -i 0"
> logical  /backup      10G-     ext4  rw,noatime 
> createopts="-L backup"        tuneopts="-c 0 -i 0"
>
> My problem is that after I do the FAI install on the machine, and look at the 
> partition table with fdisk, I see:
>
> /dev/sda1   *        2048    41945087    20971520   83  Linux
> /dev/sda2        41945088  1952448511   955251712    f  W95 Ext'd (LBA)
> /dev/sda5        41945090    62916609    10485760   83  Linux
> /dev/sda6        62916612    79693827     8388608   82  Linux swap / Solaris
> /dev/sda7        79693830   121636869    20971520   83  Linux
> /dev/sda8       121636872   123734023     1048576   83  Linux
> /dev/sda9       123734026  1952448511   914357243   83  Linux
>
> Why is the first partition starting at 2048 instead of 1?  If I look at the 
> disk in cfdisk, it's showing 1.05MB of free space at the beginning of the 
> disk...although it's a trivial amount of space being lost, why am I losing 
> it?
>
> I have a Debian Squeeze system running FAI 3.4.7 and I don't see that problem 
> when using the same disk config.
>
> Any help would be much appreciated, the main reason I'm looking into this is 
> because I'm trying to use the preserve_always option with FAI 4.0.3 after 
> I've already done an initial install on the system with the same FAI 
> disk_config and I'm getting:
>
> Previous partitions overflow begin of preserved partition /dev/sda8
> Prototype mismatch: sub Parse::RecDescent::namespace000001::dclone ($) vs 
> none at /usr/share/perl5/Parse/RecDescent. pm line 1984 during global 
> destruction.
>
> I was hoping it had something to do with the 1.05MB of wasted space in the 
> beginning of the disk causing problems.  Again, using the same disk_config 
> and adding the preserve_always works perfectly with 3.4.7.
>
> Thanks!
>
> Craig
>