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Simplify block number calculation

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This commit is contained in:
AJ Jordan 2018-11-30 23:46:09 -05:00
parent 4036e50604
commit bc6c729a82
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1 changed files with 1 additions and 3 deletions
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init/resize-rootfs-if-needed.sh
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@ -15,9 +15,7 @@ sysfs_xvda="/sys/class/block/xvda"
# if root filesystem use already (almost) the whole dis # if root filesystem use already (almost) the whole dis
non_rootfs_data=$(( 250 * 1024 * 2 )) non_rootfs_data=$(( 250 * 1024 * 2 ))
rootfs_size=$(df --output=size / | tail -n 1) rootfs_size=$(df --block-size=512 --output=size / | tail -n 1)
# convert to 512-byte blocks
rootfs_size=$(( rootfs_size * 2 ))
if [ "$(cat "$sysfs_xvda/size")" -lt \ if [ "$(cat "$sysfs_xvda/size")" -lt \
$(( non_rootfs_data + rootfs_size )) ]; then $(( non_rootfs_data + rootfs_size )) ]; then
echo "root filesystem already at $rootfs_size blocks" >&2 echo "root filesystem already at $rootfs_size blocks" >&2