mirror of
https://github.com/linuxkit/linuxkit.git
synced 2025-10-23 07:02:42 +00:00
cf7b952995
This works and runs containers now, if you eg `runc exec` into it. Needs a few tweaks for rlimits, but will pull and run containers. Will integrate better with ssh/dev containers to make more usable. For a simple test use ``` ./bin/moby build examples/docker.yml ./bin/moby run hyperkit -disk-size 100 docker ``` Signed-off-by: Justin Cormack <justin.cormack@docker.com>
117 lines
3.1 KiB
Bash
Executable File
117 lines
3.1 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
# this script assumes anything on the disk can be removed if corrupted
|
|
# other use cases may need different scripts.
|
|
|
|
# currently only supports ext4 but should be expanded
|
|
|
|
do_fsck()
|
|
{
|
|
# preen
|
|
/sbin/e2fsck -p $*
|
|
EXIT_CODE=$?
|
|
# exit code 1 is errors corrected
|
|
[ "${EXIT_CODE}" -eq 1 ] && EXIT_CODE=0
|
|
# exit code 2 or 3 means need to reboot
|
|
[ "${EXIT_CODE}" -eq 2 -o "${EXIT_CODE}" -eq 3 ] && /sbin/reboot
|
|
# exit code 4 or over is fatal
|
|
[ "${EXIT_CODE}" -lt 4 ] && return "${EXIT_CODE}"
|
|
|
|
# try harder
|
|
/sbin/e2fsck -y $*
|
|
# exit code 1 is errors corrected
|
|
[ "${EXIT_CODE}" -eq 1 ] && EXIT_CODE=0
|
|
# exit code 2 or 3 means need to reboot
|
|
[ "${EXIT_CODE}" -eq 2 -o "${EXIT_CODE}" -eq 3 ] && /sbin/reboot
|
|
# exit code 4 or over is fatal
|
|
[ "${EXIT_CODE}" -ge 4 ] && printf "Filesystem unrecoverably corrupted, will reformat\n"
|
|
|
|
return "${EXIT_CODE}"
|
|
}
|
|
|
|
do_fsck_extend_mount()
|
|
{
|
|
DRIVE="$1"
|
|
DATA="$2"
|
|
|
|
do_fsck "$DATA" || return 1
|
|
|
|
# only try to extend if there is a single partition and free space
|
|
PARTITIONS=$(sfdisk -J "$DRIVE" | jq '.partitiontable.partitions | length')
|
|
|
|
if [ "$PARTITIONS" -eq 1 ] && \
|
|
sfdisk -F "$DRIVE" | grep -q 'Unpartitioned space' &&
|
|
! sfdisk -F "$DRIVE" | grep -q '0 B, 0 bytes, 0 sectors'
|
|
then
|
|
SPACE=$(sfdisk -F "$DRIVE" | grep 'Unpartitioned space')
|
|
printf "Resizing disk partition: $SPACE\n"
|
|
|
|
# 83 is Linux partition id
|
|
START=$(sfdisk -J "$DRIVE" | jq -e '.partitiontable.partitions | map(select(.type=="83")) | .[0].start')
|
|
|
|
sfdisk -q --delete "$DRIVE" 2> /dev/null
|
|
echo "${START},,83;" | sfdisk -q "$DRIVE"
|
|
|
|
# set bootable flag
|
|
sfdisk -A "$DRIVE" 1
|
|
|
|
# update status
|
|
blockdev --rereadpt $diskdev 2> /dev/null
|
|
mdev -s
|
|
|
|
# wait for device
|
|
for i in $(seq 1 50); do test -b "$DATA" && break || sleep .1; mdev -s; done
|
|
|
|
# resize2fs fails unless we use -f here
|
|
do_fsck -f "$DATA" || return 1
|
|
resize2fs "$DATA"
|
|
|
|
do_fsck "$DATA" || return 1
|
|
fi
|
|
}
|
|
|
|
do_mkfs()
|
|
{
|
|
diskdev="$1"
|
|
|
|
# new disks does not have an DOS signature in sector 0
|
|
# this makes sfdisk complain. We can workaround this by letting
|
|
# fdisk create that DOS signature, by just do a "w", a write.
|
|
# http://bugs.alpinelinux.org/issues/145
|
|
echo "w" | fdisk $diskdev >/dev/null
|
|
|
|
# format one large partition
|
|
echo ";" | sfdisk --quiet $diskdev
|
|
|
|
# update status
|
|
blockdev --rereadpt $diskdev 2> /dev/null
|
|
|
|
# wait for device
|
|
for i in $(seq 1 50); do test -b "$DATA" && break || sleep .1; mdev -s; done
|
|
|
|
FSOPTS="-O resize_inode,has_journal,extent,huge_file,flex_bg,uninit_bg,64bit,dir_nlink,extra_isize"
|
|
|
|
mkfs.ext4 -q -F $FSOPTS ${diskdev}1
|
|
}
|
|
|
|
# TODO fix for multiple disks, cdroms etc
|
|
DEV="$(find /dev -maxdepth 1 -type b ! -name 'loop*' | grep -v '[0-9]$' | sed 's@.*/dev/@@' | sort | head -1 )"
|
|
|
|
[ -z "${DEV}" ] && exit 1
|
|
|
|
DRIVE="/dev/${DEV}"
|
|
|
|
# see if it has a partition table already
|
|
if sfdisk -d "${DRIVE}" >/dev/null 2>/dev/null
|
|
then
|
|
DATA=$(sfdisk -J "$DRIVE" | jq -e -r '.partitiontable.partitions | map(select(.type=="83")) | .[0].node')
|
|
if [ $? -eq 0 ]
|
|
then
|
|
do_fsck_extend_mount "$DRIVE" "$DATA" || do_mkfs "$DRIVE"
|
|
else
|
|
do_mkfs "$DRIVE"
|
|
fi
|
|
else
|
|
do_mkfs "$DRIVE"
|
|
fi
|