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prevent swaping on SD card

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This commit is contained in:
kay0u 2019-05-09 10:44:22 +02:00
parent eb564f9ad9
commit ee160ea534
1 changed files with 17 additions and 15 deletions
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32
scripts/_common.sh
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@ -36,20 +36,6 @@ bool_to_true_false () {
# EXPERIMENTAL HELPERS
#=================================================
# Check if the device of the main mountpoint "/" is an SD card
#
# return 1 if it's an SD card, else 0
_ynh_is_main_device_is_sd_card () {
local main_device=$(lsblk --output PKNAME --noheadings $(findmnt / --nofsroot --uniq --output source --noheadings --first-only))
if echo $main_device | grep --quiet "mmc" && [ $(cat /sys/block/$main_device/queue/rotational) -eq 0 ]
then
return 1
else
return 0
fi
}
# Add swap
#
# usage: ynh_add_swap --size=SWAP in Mb
@ -70,7 +56,7 @@ ynh_add_swap () {
SD_CARD_CAN_SWAP=${SD_CARD_CAN_SWAP:-0}
# Swap on SD card only if it's is specified
if [ _ynh_is_main_device_is_sd_card ] && [ "$SD_CARD_CAN_SWAP" == "0" ]
if ynh_is_main_device_is_sd_card && [ "$SD_CARD_CAN_SWAP" == "0" ]
then
return
fi
@ -122,6 +108,22 @@ ynh_del_swap () {
fi
}
# Check if the device of the main mountpoint "/" is an SD card
#
# [internal]
#
# return 0 if it's an SD card, else 1
ynh_is_main_device_is_sd_card () {
local main_device=$(lsblk --output PKNAME --noheadings $(findmnt / --nofsroot --uniq --output source --noheadings --first-only))
if echo $main_device | grep --quiet "mmc" && [ $(tail -n1 /sys/block/$main_device/queue/rotational) == "0" ]
then
return 0
else
return 1
fi
}
# Check the amount of available RAM
#
# usage: ynh_check_ram [--required=RAM required in Mb] [--no_swap|--only_swap] [--free_ram]