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lz4 legacy format (Linux kernel compression) #1235

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merged 2 commits into from
Mar 16, 2017
Merged

lz4 legacy format (Linux kernel compression) #1235

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2c8c332
lz4 legacy format (Linux kernel compression)
Mar 11, 2017
810cded
-l option explained
Mar 14, 2017
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7 changes: 4 additions & 3 deletions usr/share/rear/pack/GNU/Linux/900_create_initramfs.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -16,10 +16,11 @@ pushd "$ROOTFS_DIR" >/dev/null
start_seconds=$( date +%s )
case "$REAR_INITRD_COMPRESSION" in
(lz4)
# Create initrd.lz4 with lz4 default -1 compression (fast speed but less compression)
# Create initrd.lz4 with lz4 -l compression (fast speed but less compression)
# -l = Legacy format (typically for Linux Kernel compression)
REAR_INITRD_FILENAME="initrd.lz4"
LogPrint "Creating recovery/rescue system initramfs/initrd $REAR_INITRD_FILENAME with lz4 compression"
if find . ! -name "*~" | cpio -H newc --create --quiet | lz4 > "$TMP_DIR/$REAR_INITRD_FILENAME" ; then
LogPrint "Creating recovery/rescue system initramfs/initrd $REAR_INITRD_FILENAME with lz4 -l compression"
if find . ! -name "*~" | cpio -H newc --create --quiet | lz4 -l > "$TMP_DIR/$REAR_INITRD_FILENAME" ; then
needed_seconds=$(( $( date +%s ) - start_seconds ))
LogPrint "Created $REAR_INITRD_FILENAME with lz4 compression ($( stat -c%s $TMP_DIR/$REAR_INITRD_FILENAME ) bytes) in $needed_seconds seconds"
else
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