sig_cloud/diskimage-builder
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Build raw image in separate tmpfs

Browse Source 
If the tmpfs being used to hold the image filesystem is close to being
full then housing the raw disk image in the same place can be
problematic as it tends to grow faster then the filesystem shrinks when
data is being moved into it.

Putting them both into separate tmpfs's will allow there to be an
overlap where they jointly use more then the size limit for a singe tmpfs.

Change-Id: Ia17ca357d3b865d70a2d3e13e0479d008ca5f924
Closes-Bug: #1289582
This commit is contained in:
Derek Higgins 2014-05-01 10:22:15 +01:00
parent b46ece4de9
commit 3fada2566a
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
lib/common-functions
View File

@ -28,15 +28,17 @@ function tmpfs_check() {
function mk_build_dir () {
TMP_BUILD_DIR=$(mktemp -t -d --tmpdir=${TMP_DIR:-/tmp} image.XXXXXXXX)
TMP_IMAGE_DIR=$(mktemp -t -d --tmpdir=${TMP_DIR:-/tmp} image.XXXXXXXX)
[ $? -eq 0 ] || die "Failed to create tmp directory"
export TMP_BUILD_DIR
if tmpfs_check ; then
sudo mount -t tmpfs tmpfs $TMP_BUILD_DIR
sudo mount -t tmpfs tmpfs $TMP_IMAGE_DIR
fi
sudo chown $(id -u):$(id -g) $TMP_BUILD_DIR
sudo chown $(id -u):$(id -g) $TMP_BUILD_DIR $TMP_IMAGE_DIR
trap cleanup EXIT
echo Building in $TMP_BUILD_DIR
export TMP_IMAGE_PATH=$TMP_BUILD_DIR/image.raw
export TMP_IMAGE_PATH=$TMP_IMAGE_DIR/image.raw
export TMP_HOOKS_PATH=$TMP_BUILD_DIR/hooks
}
@ -190,8 +192,8 @@ function mount_qcow_image() {
function cleanup_dirs () {
sudo rm -rf $TMP_BUILD_DIR/built
sudo rm -rf $TMP_BUILD_DIR/mnt
sudo umount -f $TMP_BUILD_DIR || true
rm -rf $TMP_BUILD_DIR
sudo umount -f $TMP_BUILD_DIR $TMP_IMAGE_DIR || true
rm -rf $TMP_BUILD_DIR $TMP_IMAGE_DIR
}
# Run a directory of hooks outside the target.