[here the referred patch]
El 18/11/23 a les 20:00, Vladimir Smelhaus ha escrit:
> Hi.
>
> I have been using Debian Live for many years. Most of the time I load
> the image with the live system into the memory of computer using the
> "toram" option. Here I am posting a patch file
> /lib/live/boot/9990-toram-todisk.sh that slightly modifies the behavior
> of "toram" as follows.
>
> - When "toram" is selected, only the squashfs images that are listed in
> the filesystem.module file are loaded into the system memory, not the
> entire disk as it is now. (These files are then mounted as an overlay to
> /.)
>
> - The size of the temporary filesystem (tmpfs) is set according to the
> total size of the squashfs images being loaded.
>
> - The device file name of the temporary filesystem is changed from
> "/dev/shm" to "tmpfs", because the original choice is wrong (at least
> nowadays) and causes error messages when the system runs.
>
>
> Regards
>
> Vladimir Smelhaus
>
>
> --
>
> --- 9990-toram-todisk.sh 2023-01-31 00:00:00.000000000 +0100
> +++ 9990-toram-todisk.sh.new 2023-11-18 19:20:49.510912055 +0100
> @@ -10,13 +9,21 @@
>
> if [ -z "${MODULETORAM}" ]
> then
> - size=$(fs_size "" ${copyfrom}/ "used")
> + if [ -e
> ${copyfrom}/${LIVE_MEDIA_PATH}/"filesystem.${MODULE}.module" ]
> + then
> + size=$(cd ${copyfrom}/${LIVE_MEDIA_PATH} ; ls -l $(cat
> filesystem.${MODULE}.module) | awk '{ sum += $5 } END { sum = sum / 1024
> + 512 ; print sum }')
> + elif [ -e ${copyfrom}/${LIVE_MEDIA_PATH}/"${MODULE}.module" ]
> + then
> + size=$(cd ${copyfrom}/${LIVE_MEDIA_PATH} ; ls -l $(cat
> ${MODULE}.module) | awk '{ sum += $5 } END { sum = sum / 1024 + 512 ;
> print sum }')
> + else
> + size=$(ls -l ${copyfrom}/${LIVE_MEDIA_PATH}/ | awk '{ sum += $5
> } END { sum = sum / 1024 + 512 ; print sum }')
> + fi
> else
> MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
>
> if [ -f "${MODULETORAMFILE}" ]
> then
> - size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print
> $5}') / 1024 + 5000 )
> + size=$(ls -l ${MODULETORAMFILE} | awk '{ sum += $5 } END {
> sum = sum / 1024 + 512 ; print sum }')
> else
> log_warning_msg "Error: toram-module ${MODULETORAM}
> (${MODULETORAMFILE}) could not be read."
> return 1
> @@ -30,7 +37,7 @@
> mount_options="-o size=${size}k"
> free_string="memory"
> fstype="tmpfs"
> - dev="/dev/shm"
> + dev="tmpfs"
> else
> # it should be a writable block device
> if [ -b "${copytodev}" ]
> @@ -81,19 +87,60 @@
> cp ${MODULETORAMFILE} ${copyto} # copy only the
> filesystem module
> fi
> else
> + image_directory="${copyfrom}/${LIVE_MEDIA_PATH}"
> + if [ -n "${MODULE}" ]
> + then
> + image_directory="${copyfrom}/${LIVE_MEDIA_PATH}"
> + image_string=""
> + # Read image names from ${MODULE}.module if it exists
> + if [ -e
"${image_directory}/filesystem.${MODULE}.module" ]
> + then
> + for IMAGE in $(cat
> ${image_directory}/filesystem.${MODULE}.module)
> + do
> + image_string="${image_string} ${IMAGE}"
> + done
> + elif [ -e "${image_directory}/${MODULE}.module" ]
> + then
> + for IMAGE in $(cat
> ${image_directory}/${MODULE}.module)
> + do
> + image_string="${image_string} ${IMAGE}"
> + done
> + else
> + for IMAGE in $(ls ${image_directory}/ | grep -v
> "vmlinuz\|initrd\|\.packages" )
> + do
> + image_string="${image_string} ${IMAGE}"
> + done
> + fi
> + echo " * Copying modules to RAM" 1>/dev/console
> + mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
> + if [ -x /bin/rsync ]
> + then
> + for modulefile in ${image_string}
> + do
> + # echo " ..... ${modulefile}" 1>/dev/console
> + rsync --progress
> ${copyfrom}/${LIVE_MEDIA_PATH}/${modulefile}
> ${copyto}/${LIVE_MEDIA_PATH} 1>/dev/console
> + done
> + else
> + for modulefile in ${image_string}
> + do
> + # echo " ..... ${modulefile}" 1>/dev/console
> + cp -a
> ${copyfrom}/${LIVE_MEDIA_PATH}/${modulefile}
${copyto}/${LIVE_MEDIA_PATH}/
> + done
> + fi
> + else
> if [ -x /bin/rsync ]
> then
> - echo " * Copying whole medium to RAM" 1>/dev/console
> - rsync -a --progress ${copyfrom}/* ${copyto}
> 1>/dev/console # "cp -a" from busybox also copies hidden files
> + echo " * Copying whole live_media_path to RAM"
> 1>/dev/console
> + rsync --progress ${copyfrom}/${LIVE_MEDIA_PATH}/*
> ${copyto}/${LIVE_MEDIA_PATH} 1>/dev/console # "cp -a" from busybox also
> copies hidden files
> else
> - cp -a ${copyfrom}/* ${copyto}/
> + cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/*
> ${copyto}/${LIVE_MEDIA_PATH}/
> if [ -e ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ]
> then
> cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/.disk
${copyto}
> fi
> fi
> fi
> -
> + fi
> umount ${copyfrom}
> mount -r -o move ${copyto} ${copyfrom}
> fi
>
El 18/2/24 a les 0:57, Vladimir Smelhaus ha escrit:
Dne 17. 02. 24 v 4:33 Alex King napsal(a):
I tried live-boot(7)"toram" paramater. This actually worked on my
test machine, but to my surprise it copied the whole 4G root
filesystem to ram instead of just filesystem.squashfs. While it
worked on this system (albeit wasting a lot of time and RAM from the
16G on this machine), it would not work in other cases where the root
filesystem may be 500G and RAM only 4G.
How can I arrange to have filesystem.squashfs copied into ram?
You can't. But I have sent a patch to this mailing list in November 2023
that makes it possible. No one replied.
Vladimir
--
Narcis Garcia
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