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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
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# this script assumes anything on the disk can be removed if corrupted
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# other use cases may need different scripts.
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# currently only supports ext4 but should be expanded
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do_fsck()
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{
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# preen
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/sbin/e2fsck -p $*
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EXIT_CODE=$?
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# exit code 1 is errors corrected
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[ "${EXIT_CODE}" -eq 1 ] && EXIT_CODE=0
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# exit code 2 or 3 means need to reboot
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[ "${EXIT_CODE}" -eq 2 -o "${EXIT_CODE}" -eq 3 ] && /sbin/reboot
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# exit code 4 or over is fatal
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[ "${EXIT_CODE}" -lt 4 ] && return "${EXIT_CODE}"
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# try harder
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/sbin/e2fsck -y $*
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# exit code 1 is errors corrected
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[ "${EXIT_CODE}" -eq 1 ] && EXIT_CODE=0
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# exit code 2 or 3 means need to reboot
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[ "${EXIT_CODE}" -eq 2 -o "${EXIT_CODE}" -eq 3 ] && /sbin/reboot
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# exit code 4 or over is fatal
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[ "${EXIT_CODE}" -ge 4 ] && printf "Filesystem unrecoverably corrupted, will reformat\n"
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return "${EXIT_CODE}"
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}
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do_fsck_extend_mount()
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{
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DRIVE="$1"
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DATA="$2"
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do_fsck "$DATA" || return 1
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# only try to extend if there is a single partition and free space
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PARTITIONS=$(sfdisk -J "$DRIVE" | jq '.partitiontable.partitions | length')
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if [ "$PARTITIONS" -eq 1 ] && \
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sfdisk -F "$DRIVE" | grep -q 'Unpartitioned space' &&
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! sfdisk -F "$DRIVE" | grep -q '0 B, 0 bytes, 0 sectors'
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then
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SPACE=$(sfdisk -F "$DRIVE" | grep 'Unpartitioned space')
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printf "Resizing disk partition: $SPACE\n"
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# 83 is Linux partition id
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START=$(sfdisk -J "$DRIVE" | jq -e '.partitiontable.partitions | map(select(.type=="83")) | .[0].start')
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sfdisk -q --delete "$DRIVE" 2> /dev/null
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echo "${START},,83;" | sfdisk -q "$DRIVE"
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# set bootable flag
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sfdisk -A "$DRIVE" 1
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# update status
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blockdev --rereadpt $diskdev 2> /dev/null
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mdev -s
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# wait for device
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for i in $(seq 1 50); do test -b "$DATA" && break || sleep .1; mdev -s; done
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# resize2fs fails unless we use -f here
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do_fsck -f "$DATA" || return 1
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resize2fs "$DATA"
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do_fsck "$DATA" || return 1
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fi
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}
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do_mkfs()
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{
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diskdev="$1"
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# new disks does not have an DOS signature in sector 0
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# this makes sfdisk complain. We can workaround this by letting
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# fdisk create that DOS signature, by just do a "w", a write.
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# http://bugs.alpinelinux.org/issues/145
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echo "w" | fdisk $diskdev >/dev/null
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# format one large partition
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echo ";" | sfdisk --quiet $diskdev
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# update status
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blockdev --rereadpt $diskdev 2> /dev/null
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# wait for device
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for i in $(seq 1 50); do test -b "$DATA" && break || sleep .1; mdev -s; done
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FSOPTS="-O resize_inode,has_journal,extent,huge_file,flex_bg,uninit_bg,64bit,dir_nlink,extra_isize"
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mkfs.ext4 -q -F $FSOPTS ${diskdev}1
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}
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# TODO fix for multiple disks, cdroms etc
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DEV="$(find /dev -maxdepth 1 -type b ! -name 'loop*' | grep -v '[0-9]$' | sed 's@.*/dev/@@' | sort | head -1 )"
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[ -z "${DEV}" ] && exit 1
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DRIVE="/dev/${DEV}"
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# see if it has a partition table already
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if sfdisk -d "${DRIVE}" >/dev/null 2>/dev/null
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then
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DATA=$(sfdisk -J "$DRIVE" | jq -e -r '.partitiontable.partitions | map(select(.type=="83")) | .[0].node')
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if [ $? -eq 0 ]
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then
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do_fsck_extend_mount "$DRIVE" "$DATA" || do_mkfs "$DRIVE"
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else
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do_mkfs "$DRIVE"
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fi
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else
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do_mkfs "$DRIVE"
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fi
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