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| author |   Rick Farina (Zero_Chaos) <zerochaos@gentoo.org> | 2014-09-22 20:07:28 -0400 |
|---|---|---|
| committer | Rick Farina (Zero_Chaos) <zerochaos@gentoo.org> | 2015-04-29 13:33:04 -0400 |
| commit | 4e55218f080fab85514112a38e6fe6aee6a922ba (patch) | |
| tree | d7b2b6ef6b9ff5799817ba2c0dd65874359aa427 | |
| parent | change default aufs branch naming (diff) | |
| download | genkernel-4e55218f080fab85514112a38e6fe6aee6a922ba.tar.gz genkernel-4e55218f080fab85514112a38e6fe6aee6a922ba.tar.bz2 genkernel-4e55218f080fab85514112a38e6fe6aee6a922ba.zip | |
aufs changes saving automation
The aufs code has the ability to save changes in a file, however, it
requires the user to manually tell us where the file is. This code will
automatically check for the file on $CDROOT, as well as automatically
pick up the casper-rw file created by unetbooting for persistence.
Additionally we add the option for aufs=search which will search all
drives for livecd.aufs. Possible later enhancements include searching
other partitions on the CDROOT_DEV for livecd.aufs automatically instead
of needing aufs=search. Then again, possible later enhancements also
include just always searching, it's shockingly fast to do the search...
| -rw-r--r-- | defaults/initrd.scripts | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/defaults/initrd.scripts b/defaults/initrd.scripts index d8142a29..e05809c9 100644 --- a/defaults/initrd.scripts +++ b/defaults/initrd.scripts @@ -123,7 +123,7 @@ findmediamount() { fi good_msg "Attempting to mount media: ${x}" ${CRYPT_SILENT} - mount -r -t ${CDROOT_TYPE} ${x} ${mntcddir} >/dev/null 2>&1 + mount -t ${CDROOT_TYPE} ${x} ${mntcddir} >/dev/null 2>&1 if [ "$?" = '0' ] then if [ -n "${ISOBOOT}" ]; then @@ -408,12 +408,29 @@ create_changefs() { setup_aufs() { bootstrapCD + if [ "$aufs_dev" = "search" ]; then + findmediamount "aufs-dev" "$aufs_union_file" \ + "aufs_dev" "$aufs_dev_mnt" $(devicelist) + aufs_mounted="1" + elif [ -z $aufs_dev ] && [ -w "$CDROOT_PATH/$aufs_union_file" ]; then + aufs_dev="$REAL_ROOT" + aufs_dev_mnt="$CDROOT_PATH" + aufs_mounted="1" + fi + if [ -z $aufs_dev ] && [ -w "$CDROOT_PATH/casper-rw" ]; then + aufs_dev="$REAL_ROOT" + aufs_dev_mnt="$CDROOT_PATH" + aufs_union_file="/casper-rw" + aufs_mounted="1" + fi + if [ -n "$aufs_dev" ]; then if [ ! -b $aufs_dev ]; then bad_msg "$aufs_dev is not a valid block device" local invalidblk=1 unset aufs_dev - else + #skip this block when aufs_dev_mnt is already mounted + elif [ "$aufs_mounted" != "1" ]; then good_msg "Mounting $aufs_dev to $aufs_memory for aufs support" if ! mount -t auto "$aufs_dev" "$aufs_dev_mnt" &>/dev/null; then @@ -428,6 +445,9 @@ setup_aufs() { elif [ -n "$aufs_dev" ]; then while :; do if mount -t auto "$aufs_dev_mnt$aufs_union_file" "$aufs_memory" &>/dev/null; then + if [ "$aufs_union_file" = "/casper-rw" ];then + bad_msg "Use of livecd.aufs preferred to casper-rw for changes saving, please rename the file." + fi break else bad_msg "Mounting of changes file failed, Running e2fsck" |