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--- wiki:ubuntu910 [2009/11/18 09:28]
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+++ wiki:ubuntu910 [2009/12/26 06:13] (current)
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 ====== Supporting Ubuntu 9.10 in BKO ======
 This page will document progress and problems faced in supporting Ubuntu 9.10 in BKO.
+====== Current Status ======
+  * Ubuntu is booting over network using pxe, but its not able to mount the iso and use it.
+  * Ubuntu is booting as long as URL to ISO is containing IP instead of URL, its same old dns resolv problem.
+  * Ubuntu with httpfs is working :-)
+     * I am using ugly hack to populate ''/etc/resolv.conf'' file with public DNS entries.
+     * So it may not work in place where public DNS queries are not allowed.
 ===== Steps in adding Ubuntu 9.10 in BKO =====
-  - Get the 9.10 ISO.
+  - Get the 9.10 ISO.  - done
-  - Extract the linux kernel image, initrd image.
+  - Extract the linux kernel image, initrd image. - done (location [[http://git.etherboot.org/?p=people/pravin/BKO.git;a=tree;f=bko/live/ubuntu/U9.10|bko/live/ubuntu/U9.10/]])
   - Get kernel modules needed for iscsi support from iso.
-  - Modify initrd image ( to be done by ''generate_initrd.sh'' script )
+  - Modify initrd image ( to be done by [[http://git.etherboot.org/?p=people/pravin/BKO.git;a=history;f=bko/live/ubuntu/U9.10/generate_initrd.sh|generate_initrd.sh]] script )
-     - adding tools needed to support httpfs and iscsi mounting
+     - adding tools needed to support httpfs and iscsi mounting - Done
-     - add kernel modules for iscsi support to initrd.
+     - add kernel modules for iscsi support to initrd. - Done
-     - edit the "scripts/casper" inside initrd image.
+     - edit the "scripts/casper" inside initrd image. - Done
         - Turn on the networking.
         - configure the network to use boot parameters for ''IP'' or use ''dhcp''
         - to use above tools and mount the ISO image over Internet.
         - Modify code such that mounted ISO will be used for booting instead real cdrom.
-     - Compress back the initrd image.
+     - Compress back the initrd image.  __Problems in doing this__
   - Used unmodified linux kernel image and modified initrd image to boot the system.
   - Most probably something will go wrong and it will not work, debug those problems.
-===== new format for initrd =====
+===== Problem-1 : new format for initrd =====
 Ubuntu 9.10 is using new format for compressing initrd files. It uses ''lzma'' command for this.
 This is quite new format for me, so struggling little bit with it.
@@ Line 34: / Line 41: @@
 does not match the original ''initrd.lz'' file, so I am doing something wrong here.
 Most probably, I need to provide proper compression level which I need to find out.
+<code>(cd mpoint;find . | cpio -oH newc | lzma -c > ../initrd.lzma)</code>
+=== Soln ===
+I have to provide ''-9'' argument to lzma for work.  So final command which worked
+in ''generate_initrd.sh'' is
+<code>sudo find . | sudo cpio -oH newc | lzma -9 -c> ../initrd.lz</code>