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Better private.img size management.

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This commit is contained in:
Manuel Amador (Rudd-O) 2016-10-26 12:59:50 +00:00
parent 59aec8e5eb
commit 40db82a79f
1 changed files with 38 additions and 11 deletions
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53
init/setup-rwdev.sh
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@ -2,24 +2,51 @@
set -e
if [ -e /dev/xvdb ] ; then
dev=/dev/xvdb
if [ -e "$dev" ] ; then
# The private /dev/xvdb device is present.
# check if private.img (xvdb) is empty - all zeros
private_size_512=`blockdev --getsz /dev/xvdb`
if dd if=/dev/zero bs=512 count=$private_size_512 2>/dev/null | diff /dev/xvdb - >/dev/null; then
private_size_512=`blockdev --getsz "$dev"`
if dd if=/dev/zero bs=512 count="$private_size_512" 2>/dev/null | diff "$dev" - >/dev/null; then
# the device is empty, create filesystem
echo "Virgin boot of the VM: creating private.img filesystem" >&2
mkfs.ext4 -m 0 -q /dev/xvdb || exit 1
fi
tune2fs -m 0 /dev/xvdb
echo "Virgin boot of the VM: marking private.img as clean" >&2
fsck.ext4 -fp /dev/xvdb
echo "Virgin boot of the VM: enlarging private.img" >&2
if ! content=$(resize2fs /dev/xvdb 2>&1) ; then
echo "resize2fs /dev/xvdb failed:" >&2
echo "Virgin boot of the VM: creating private.img filesystem on $dev" >&2
if ! content=$(mkfs.ext4 -m 0 -q "$dev" 2>&1) ; then
echo "Virgin boot of the VM: creation of private.img on $dev failed:" >&2
echo "$content" >&2
echo "Virgin boot of the VM: aborting" >&2
exit 1
fi
if ! content=$(tune2fs -m 0 "$dev" 2>&1) ; then
echo "Virgin boot of the VM: marking free space on $dev as usable failed:" >&2
echo "$content" >&2
echo "Virgin boot of the VM: aborting" >&2
exit 1
fi
fi
echo "Private device size management: enlarging $dev" >&2
if content=$(resize2fs "$dev" 2>&1) ; then
echo "Private device size management: resize2fs of $dev succeeded" >&2
else
echo "Private device size management: resize2fs $dev failed:" >&2
echo "$content" >&2
echo "Private device size management: attempting to mark $dev clean" >&2
if content=$(fsck.ext4 -fp "$dev" 2>&1) ; then
echo "Private device size management: $dev marked clean, enlarging it again" >&2
if content=$(resize2fs "$dev" 2>&1) ; then
echo "Private device size management: resize2fs of $dev succeeded" >&2
else
echo "Private device size management: resize2fs of $dev failed even after marking file system clean:" >&2
echo "$content" >&2
echo "Private device size management: expect serious trouble ahead" >&2
fi
else
echo "Private device size management: $dev could not be marked clean:" >&2
echo "$content" >&2
echo "Private device size management: expect serious trouble ahead" >&2
fi
fi
fi