On 17:08, Neil Brown wrote: > Release 2.2 fixes a few small bugs and add as few small elements of > functionality. Possibly the most interesting is the addition of > 'README.initramfs' and 'mkinitramfs'. Feedback on these would be > most welcome. >From README.initramfs: A minimal initramfs for assembling md arrays can be created using 3 files and one directory. These are: /bin Directory /bin/mdadm statically linked mdadm binary /bin/busybox statically linked busybox binary /bin/sh hard link to /bin/busybox /init a shell script which call mdadm appropriately. Don't we need /dev/console as well? About the example script: ============================================== #!/bin/sh echo 'Auto-assembling boot md array' mkdir /proc mount -t proc proc /proc if [ -n "$rootuuid" ] then arg=--uuid=$rootuuid elif [ -n "$mdminor" ] then arg=--super-minor=$mdminor else arg=--super-minor=0 fi echo "Using $arg" mdadm -Acpartitions $arg --auto=part /dev/mda cd / mount /dev/mda1 /root || mount /dev/mda /root umount /proc cd /root exec chroot . /sbin/init < /dev/console > /dev/console 2>&1 ============================================= (a) mkdir, mount, umount won't be found. 'busybox mkdir /proc' etc. does the job though. Or, create symlinks. (b) Does mdadm --auto=/dev create the /dev directory? If if does not, the script has to create it. Otherwise, the mdadm manpage should mention this ;) (c) Documentation/filesystems/ramfs-rootfs-initramfs.txt recommends to mount --move . / before the final chroot. There is also a trivial typo. Patch below. Have fun Andre --- mdadm-2.2/README.initramfs~ Tue Dec 6 13:57:22 2005 +++ mdadm-2.2/README.initramfs Tue Dec 6 13:57:46 2005 @@ -84,7 +84,7 @@ Some key points are: The --auto flag is given to mdadm so that it will create /dev/md* files automatically. This is needed as /dev will not contain - and md files, and udev will not create them (as udev only created device + any md files, and udev will not create them (as udev only created device files after the device exists, and mdadm need the device file to create the device). Note that the created md files may not exist in /dev of the mounted root filesystem. This needs to be deal with separately -- Jesus not only saves, he also frequently makes backups - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
