diff options
Diffstat (limited to 'make_slackware_live.sh')
| -rwxr-xr-x | make_slackware_live.sh | 38 |
1 files changed, 31 insertions, 7 deletions
diff --git a/make_slackware_live.sh b/make_slackware_live.sh index 851af44..a20c809 100755 --- a/make_slackware_live.sh +++ b/make_slackware_live.sh @@ -227,17 +227,41 @@ ADD_CACERT=${ADD_CACERT:-"YES"} # the alternative is gzip (which adds ~30% to the initrd size). COMPR=${COMPR:-"xz --check=crc32"} +# What compressors are available? +SQ_COMP_AVAIL=(gzip lzma lzo xz zstd) + +# Compressor optimizations: +declare -A SQ_COMP_PARAMS_DEF +SQ_COMP_PARAMS_DEF[gzip]="" +SQ_COMP_PARAMS_DEF[lzma]="" +SQ_COMP_PARAMS_DEF[lzo]="" +SQ_COMP_PARAMS_DEF[xz]=""-b 512k -Xdict-size 100%" +SQ_COMP_PARAMS_DEF[zstd]="-b 512k -Xcompression-level 16" +declare -A SQ_COMP_PARAMS_OPT +SQ_COMP_PARAMS_OPT[gzip]="" +SQ_COMP_PARAMS_OPT[lzma]="" +SQ_COMP_PARAMS_OPT[lzo]="" +SQ_COMP_PARAMS_OPT[xz]=""-b 1M" +SQ_COMP_PARAMS_OPT[zstd]="-b 1M -Xcompression-level 19" + # What compression to use for the squashfs modules? -# Default is xz, alternatives are gzip, lzma, lzo: +# Default is xz, alternatives are gzip, lzma, lzo, zstd: SQ_COMP=${SQ_COMP:-"xz"} +# Test whether the compressor of choice is supported by the script: +if [[ ${SQ_COMP_AVAIL[*]} =~ ${SQ_COMP} ]]; then + echo "*** Compressor '${SQ_COMP}' not supported by $(basename $0 .sh)!" + echo "*** Select one of '${SQ_COMP_AVAIL[@]}'" + exit 1 +fi + # What compression parameters to use? # For our lean XFCE image we try to achieve max compression, # at the expense of runtime latency: if [ "$LIVEDE" = "XFCE" ] ; then - SQ_COMP_PARAMS=${SQ_COMP_PARAMS:-"-b 1M"} + SQ_COMP_PARAMS=${SQ_COMP_PARAMS:-"${SQ_COMP_PARAMS_OPT[${SQ_COMP}]}"} else - SQ_COMP_PARAMS=${SQ_COMP_PARAMS:-"-b 512k -Xdict-size 100%"} + SQ_COMP_PARAMS=${SQ_COMP_PARAMS:-"${SQ_COMP_PARAMS_DEF[${SQ_COMP}]}"} fi # Mount point where Live filesystem is assembled (no storage requirements): @@ -1147,13 +1171,13 @@ for SPS in ${SL_SERIES} ; do rm -rf ${LIVE_BOOT}/boot mv ${INSTDIR}/boot ${LIVE_BOOT}/ # Squash the boot files into a module as a safeguard: - mksquashfs ${LIVE_BOOT} ${LIVE_MOD_SYS}/0000-${DISTRO}_boot-${SL_VERSION}-${SL_ARCH}.sxz -noappend -comp ${SQ_COMP} -b 1M + mksquashfs ${LIVE_BOOT} ${LIVE_MOD_SYS}/0000-${DISTRO}_boot-${SL_VERSION}-${SL_ARCH}.sxz -noappend -comp ${SQ_COMP} ${SQ_COMP_PARAMS} fi fi # Squash the installed package series into a module: - mksquashfs ${INSTDIR} ${LIVE_MOD_SYS}/${MNUM}-${DISTRO}_${SPS}-${SL_VERSION}-${SL_ARCH}.sxz -noappend -comp ${SQ_COMP} -b 1M + mksquashfs ${INSTDIR} ${LIVE_MOD_SYS}/${MNUM}-${DISTRO}_${SPS}-${SL_VERSION}-${SL_ARCH}.sxz -noappend -comp ${SQ_COMP} ${SQ_COMP_PARAMS} rm -rf ${INSTDIR}/* # End result: we have our .sxz file and the INSTDIR is empty again, @@ -2191,7 +2215,7 @@ chroot ${LIVE_ROOTDIR} /etc/cron.daily/${LOCATE_BIN} 2>${DBGOUT} # Squash the configuration into its own module: umount ${LIVE_ROOTDIR} 2>${DBGOUT} || true -mksquashfs ${INSTDIR} ${LIVE_MOD_SYS}/0099-${DISTRO}_zzzconf-${SL_VERSION}-${SL_ARCH}.sxz -noappend -comp ${SQ_COMP} -b 1M +mksquashfs ${INSTDIR} ${LIVE_MOD_SYS}/0099-${DISTRO}_zzzconf-${SL_VERSION}-${SL_ARCH}.sxz -noappend -comp ${SQ_COMP} ${SQ_COMP_PARAMS} rm -rf ${INSTDIR}/* # End result: we have our .sxz file and the INSTDIR is empty again, @@ -2318,7 +2342,7 @@ cp -a ${LIVE_BOOT}/boot/vmlinuz-generic*-$KGEN ${LIVE_STAGING}/boot/generic mv ${LIVE_BOOT}/boot/initrd_${KVER}.img ${LIVE_STAGING}/boot/initrd.img # Squash the boot directory into its own module: -mksquashfs ${LIVE_BOOT} ${LIVE_MOD_SYS}/0000-${DISTRO}_boot-${SL_VERSION}-${SL_ARCH}.sxz -noappend -comp ${SQ_COMP} -b 1M +mksquashfs ${LIVE_BOOT} ${LIVE_MOD_SYS}/0000-${DISTRO}_boot-${SL_VERSION}-${SL_ARCH}.sxz -noappend -comp ${SQ_COMP} ${SQ_COMP_PARAMS} # Determine additional boot parameters to be added: if [ -z ${KAPPEND} ]; then |