Le mercredi 23 fÃvrier 2005 Ã 17:07 +0100, Gildas Bayard a Ãcrit : > Hello, > > First of all, please direct me to an other mailing list if I'm going off > topic. > I've investigated a bit the initrd system and there are some questions I > could no find answers for: > - why are regular desktop distributions always using the initrd system? It's require for "root=LABEL=/" and udev. > I understand that this system is mandatory to load exotic scsi drivers > or add a pause when booting to usb but I wonder why it is always used > - on kernel 2.4 (red hat 9) the initrd image is an ext2 filesystems. For *your* system. My initrd also contain raid0 and dm-mod (see /sbin/mkinitrd and "man mkinitrd"). > It > contains a linuxrc nash script. On kernel 2.6 (fedora 3) the initrd is a > cpio archive and does not contains a linuxrc script. Could someone > briefly explain me why these differences? Particularly I wondering about > 3 things: > 1) I tried to repack my custom initrd ext2 filesystem into a cpio > archive and found that when packed as a cpio archive it's not executing > my linuxrc script (is it the way it's supposed to be?) use "/init". > 2) What are the differences between pivot_root and switch_root (new in > 2.6) ? > 3) Why using nash in the first place? nash is a mini-mini-mini-shell (bash is TTOOOO big). See "man nash". > Could we just wait until the end > of the linuxrc script? At that time the kernel would move to the new > root fs (whitout the need for pivot_root or switch_root) > > And finally, if I'm right the end of the nash script (after switch_root) > is never executed? > > Gildas >
Attachment:
signature.asc
Description: Ceci est une partie de message =?ISO-8859-1?Q?num=E9riquement?= =?ISO-8859-1?Q?_sign=E9e?=
