Re: [yast-devel] Re: Query on btrfs on SLES12

Stefan Hundhammer Tue, 13 Jun 2017 07:24:49 -0700

On 13.06.2017 15:55, Stefan Hundhammer wrote:

I just checked again in the code where that Btrfs default comes from, and it looks like it is ultimately read from /etc/sysconfig/storage :
...
...
## Type: string(ext2,ext3,ext4,xfs,btrfs)
# Default filesystem type.
DEFAULT_FS="btrfs"
...
This file exists in the inst-sys, too, so it might be possible to replace this file with a driver update disk (DUD). If that works, you could integrate that DUD into the ISO you ship as the base for your OES product.
Let me check that.


Bingo - works like a charm. See attached ext3.dud.

The procedure to create this is as follows:

- Make sure to install packages mkdud and mksusecd, then


[shundhammer @ morgul] ~ 1 % cd /tmp
[shundhammer @ morgul] /tmp 2 % mkdir -p dud-root/etc/sysconfig
[shundhammer @ morgul] /tmp 3 % cp /etc/sysconfig/storage dud-root/etc/sysconfig
[shundhammer @ morgul] /tmp 5 % vi dud-root/etc/sysconfig/storage
                                ...(edit)...

[shundhammer @ morgul] /tmp 6 % diff -u /etc/sysconfig/storage dud-root/etc/sysconfig/storage

--- /etc/sysconfig/storage      2017-06-12 12:37:02.074656188 +0200
+++ dud-root/etc/sysconfig/storage      2017-06-13 16:03:46.312521521 +0200
@@ -5,7 +5,7 @@

 ## Type: string(ext2,ext3,ext4,xfs,btrfs)
 # Default filesystem type.
-DEFAULT_FS="btrfs"
+DEFAULT_FS="ext3"

 ## Type: string(optimal,cylinder)
 # Value for partition alignment

[shundhammer @ morgul] /tmp 7 % mkdud --create ext3.dud --dist SLE12 /tmp/dud-root/

===  Update #1  ===
  [SLE 12]
    Name:
      Update 0b59bdc6-f4ba-4937-8a2d-7705616946ce
    ID:
      0b59bdc6-f4ba-4937-8a2d-7705616946ce
    Installation System:
      /etc/sysconfig/storage

[shundhammer @ morgul] /tmp 8 % mkdud --show ext3.dud
===  Update #1  ===
  [SLE 12]
    Name:
      Update 0b59bdc6-f4ba-4937-8a2d-7705616946ce
    ID:
      0b59bdc6-f4ba-4937-8a2d-7705616946ce
    Installation System:
      /etc/sysconfig/storage

Then use that DUD directly on the installation disk boot prompt or integrate it into an ISO as decribed here:


https://github.com/shundhammer/huha-linux-tips/blob/master/doc/yast-devel-tips.md#integrating-a-dud-into-an-iso

sudo mksusecd --create my-patched-SLE-12.iso \
    --initrd \
    /tmp/ext3.dud \
    SLE-12-SP3-Server-DVD-x86_64-Build0418-Media1.iso

I tested this with the latest SP3 beta (as you can see above), and it proposed an ext3 root filesystem for me.

There is a catch, though: Since that combo box with the available filesystem types does not contain ext3, this will only work as long as the user doesn't want to change anything in the "proposal settings". Unless you have any pressing reason against that, I suggest you use ext4 instead; this would integrate a whole lot better into the installation.

HTH

+ we will gratefully accept any beer invitations the next time some of you guys come visiting ;-)



Kind regards--
Stefan Hundhammer  <[email protected]>
YaST Developer

SUSE Linux GmbH
GF: Felix Imendörffer, Jane Smithard, Graham Norton; HRB 21284 (AG Nürnberg)
Maxfeldstr. 5, 90409 Nürnberg, Germany

ext3.dud
Description: Binary data

Re: [yast-devel] Re: Query on btrfs on SLES12

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