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Simplify end untethered el9 diskless environment

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Rather than treat both as the same, since untethered has everything up front anyway, go ahead and extract the filesystem.

This makes the mount look more straightforward and makes it so deletion of files from
the image also frees ram.
This commit is contained in:
Jarrod Johnson
2025-11-04 11:14:52 -05:00
parent 174d204607
commit 6c0d7ea60e
1 changed files with 34 additions and 9 deletions
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43
confluent_osdeploy/el9-diskless/profiles/default/scripts/imageboot.sh
View File

@@ -3,7 +3,7 @@ confluent_whost=$confluent_mgr
if [[ "$confluent_whost" == *:* ]] && [[ "$confluent_whost" != "["* ]]; then
confluent_whost="[$confluent_mgr]"
fi
mkdir -p /mnt/remoteimg /mnt/remote /mnt/overlay
mkdir -p /mnt/remoteimg /mnt/remote /mnt/overlay /sysroot
if [ "untethered" = "$(getarg confluent_imagemethod)" ]; then
mount -t tmpfs untethered /mnt/remoteimg
curl https://$confluent_whost/confluent-public/os/$confluent_profile/rootimg.sfs -o /mnt/remoteimg/rootimg.sfs
@@ -45,15 +45,40 @@ memtot=$(grep ^MemTotal: /proc/meminfo|awk '{print $2}')
memtot=$((memtot/2))$(grep ^MemTotal: /proc/meminfo | awk '{print $3'})
echo $memtot > /sys/block/zram0/disksize
mkfs.xfs /dev/zram0 > /dev/null
mount -o discard /dev/zram0 /mnt/overlay
if [ ! -f /tmp/mountparts.sh ]; then
mkdir -p /mnt/overlay/upper /mnt/overlay/work
mount -t overlay -o upperdir=/mnt/overlay/upper,workdir=/mnt/overlay/work,lowerdir=/mnt/remote disklessroot /sysroot
if [ "untethered" = "$(getarg confluent_imagemethod)" ]; then
mount -o discard /dev/zram0 /sysroot
echo -en "Decrypting and extracting root filesystem: 0%\r"
srcsz=$(du -sk /mnt/remote | awk '{print $1}')
while [ -f /mnt/remoteimg/rootimg.sfs ]; do
dstsz=$(du -sk /sysroot | awk '{print $1}')
pct=$((dstsz * 100 / srcsz))
if [ $pct -gt 99 ]; then
pct=99
fi
echo -en "Decrypting and extracting root filesystem: $pct%\r"
sleep 0.25
done &
cp -ax /mnt/remote/* /sysroot/
umount /mnt/remote
if [ -e /dev/mapper/cryptimg ]; then
dmsetup remove cryptimg
fi
losetup -d $loopdev
rm /mnt/remoteimg/rootimg.sfs
umount /mnt/remoteimg
wait
echo -e "Decrypting and extracting root filesystem: 100%"
else
for srcmount in $(cat /tmp/mountparts.sh | awk '{print $3}'); do
mkdir -p /mnt/overlay${srcmount}/upper /mnt/overlay${srcmount}/work
mount -t overlay -o upperdir=/mnt/overlay${srcmount}/upper,workdir=/mnt/overlay${srcmount}/work,lowerdir=${srcmount} disklesspart /sysroot${srcmount#/mnt/remote}
done
mount -o discard /dev/zram0 /mnt/overlay
if [ ! -f /tmp/mountparts.sh ]; then
mkdir -p /mnt/overlay/upper /mnt/overlay/work
mount -t overlay -o upperdir=/mnt/overlay/upper,workdir=/mnt/overlay/work,lowerdir=/mnt/remote disklessroot /sysroot
else
for srcmount in $(cat /tmp/mountparts.sh | awk '{print $3}'); do
mkdir -p /mnt/overlay${srcmount}/upper /mnt/overlay${srcmount}/work
mount -t overlay -o upperdir=/mnt/overlay${srcmount}/upper,workdir=/mnt/overlay${srcmount}/work,lowerdir=${srcmount} disklesspart /sysroot${srcmount#/mnt/remote}
done
fi
fi
mkdir -p /sysroot/etc/ssh
mkdir -p /sysroot/etc/confluent