** Patch added: "noswap kernel parameter patch"
https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1195504/+attachment/3716471/+files/noswap.patch
** Description changed:
- I would like to propose the following patch that adds a "noswap" Kernel
+ I would like to propose the attached patch that adds a "noswap" Kernel
parameter that disables casper's automatic discovery and activation of
any present swap partitions. The purpose is to not have the drives and
drivers in use so that they can be accessed or unloaded without issue.
-
- === modified file 'debian/manpage/casper.7'
- --- old/debian/manpage/casper.7 2010-11-29 12:49:36 +0000
- +++ new/debian/manpage/casper.7 2013-06-27 22:21:58 +0000
- @@ -88,6 +88,11 @@
- .TP
- .BI noprompt
- Do not prompt to eject the CD on reboot.
- +.TP
- +.BI noswap
- +Adding this parameter, casper will not attempt to find and activate swap
partitions requiring manual use of
- +.B swapon
- +as needed. This is useful to avoid accessing drives that may be present in
the system.
-
- .SH FILES
- .B /etc/casper.conf
-
- === modified file 'scripts/casper'
- --- old/scripts/casper 2013-05-28 10:19:04 +0000
- +++ new/scripts/casper 2013-06-27 22:23:14 +0000
- @@ -71,6 +71,8 @@
- export CMD_USERFULLNAME="${x#userfullname=}" ;;
- username=*)
- export CMD_USERNAME="${x#username=}" ;;
- + noswap)
- + export DISABLE_SWAP="Yes" ;;
- esac
- done
- if [ "${UNIONFS}" = "" ]; then
-
- === modified file 'scripts/casper-bottom/13swap'
- --- old/scripts/casper-bottom/13swap 2013-03-13 14:24:28 +0000
- +++ new/scripts/casper-bottom/13swap 2013-06-27 22:23:36 +0000
- @@ -22,25 +22,29 @@
- log_begin_msg "$DESCRIPTION"
-
- devices=""
- -for device in /dev/[hsv]d[a-z][0-9]*; do
- - if ! [ -b "$device" ]; then
- - continue
- - fi
- -
- - /sbin/blkid -o udev -p ${device%%[0-9]*} | grep -q "^ID_FS_USAGE=raid"
&& continue
- -
- - magic=$(/bin/dd if="$device" bs=4086 skip=1 count=1 2>/dev/null |
/bin/dd bs=10 count=1 2>/dev/null) || continue
- -
- - if [ "$magic" = "SWAPSPACE2" -o "$magic" = "SWAP-SPACE" ]; then
- -# log "Found $device"
- - devices="$devices $device"
- +if [[ -n "$DISABLE_SWAP" ]]; then
- + echo -n "disabled via kernel cmdline: noswap."
- +else
- + for device in /dev/[hsv]d[a-z][0-9]*; do
- + if ! [ -b "$device" ]; then
- + continue
- fi
- -done
- -
- -for device in $devices; do
- - cat >> $FSTAB <<EOF
- +
- + /sbin/blkid -o udev -p ${device%%[0-9]*} | grep -q
"^ID_FS_USAGE=raid" && continue
- +
- + magic=$(/bin/dd if="$device" bs=4086 skip=1 count=1 2>/dev/null |
/bin/dd bs=10 count=1 2>/dev/null) || continue
- +
- + if [ "$magic" = "SWAPSPACE2" -o "$magic" = "SWAP-SPACE" ]; then
- +# log "Found $device"
- + devices="$devices $device"
- + fi
- + done
- +
- + for device in $devices; do
- + cat >> $FSTAB <<EOF
- $device swap swap defaults 0 0
- EOF
- -done
- + done
- +fi
-
- log_end_msg
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https://bugs.launchpad.net/bugs/1195504
Title:
Add a noswap option to avoid accessing drives - w/ PATCH
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