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Hi, |
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I've been looking for simple method to create a simple initramfs to |
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just mount the /usr partition. |
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I've found |
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http://wiki.gentoo.org/wiki/Basic_initramfs_used_to_check_and_mount_/usr |
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which didn't work for me. So, I've modified it, see |
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http://www.igpm.rwth-aachen.de/jarausch/Temp/InitRAMFS/ |
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|
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The last lines of the file 'script_init.sh' are |
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# ====================== end doing stuff |
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mount -o remount,rw /mnt/root ### WHY are |
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cp /proc/mounts /mnt/root/mtab ### these two lines necessary |
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# clean up. The init process will remount proc sys and dev later |
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umount /proc |
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umount /sys |
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# umount /dev # fails, since it's automounted by the kernel |
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# switch to the real root and execute init |
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exec switch_root /mnt/root /sbin/init "$@" |
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I first tried this with the lines marked by '###' removed. |
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This worked on one machine but not on another one. There I got |
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'Remounting root filesystem read/write failed' |
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'mount: / not mounted or bad option' |
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If I replace line 26 of /etc/init.d/root (openrc-0.9.9.3) |
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mount -n -o remount,rw / |
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by |
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mount /dev/root -n -o remount,rw / |
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it works, as well, i.e. without the two marked lines above. |
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The first mount command finds the mount options in /etc/mtab . |
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Why are the marked lines above necessary on only one of two machines |
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(both of which run the same version of openrc)? |
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Many thanks for a hint, |
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Helmut. |
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