116ba4b180
moving to initramfs unifies disk allocate on different platforms. use fallocate instead of dd to speed up the disk allocation. By default, mkfs.ext4 has -E discard option which discards the blocks at the mkfs time, also speed up the initialization time.
30 lines
1.0 KiB
Django/Jinja
30 lines
1.0 KiB
Django/Jinja
#!/bin/sh -e
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PREREQS="varlog"
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prereqs() { echo "$PREREQS"; }
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case $1 in
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prereqs)
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prereqs
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exit 0
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;;
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esac
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## Mount the aufs file system: rw layer over squashfs
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image_dir=$(cat /proc/cmdline | sed -e 's/.*loop=\(\S*\)\/.*/\1/')
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mkdir -p ${rootmnt}/host/$image_dir/rw
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mount -n -o dirs=${rootmnt}/host/$image_dir/rw:${rootmnt}=ro -t aufs root-aufs ${rootmnt}
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## Check if the root block device is still there
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[ -b ${ROOT} ] || mdev -s
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## Mount the raw partition again
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mount ${ROOT} ${rootmnt}/host
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## Mount the working directory of docker engine in the raw partition, bypass the aufs
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mkdir -p ${rootmnt}/var/lib/docker
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mount --bind ${rootmnt}/host/$image_dir/{{ DOCKERFS_DIR }} ${rootmnt}/var/lib/docker
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## Mount the boot directory in the raw partition, bypass the aufs
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mkdir -p ${rootmnt}/boot
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mount --bind ${rootmnt}/host/$image_dir/boot ${rootmnt}/boot
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## Mount loop device for /var/log
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[ -f ${rootmnt}/host/disk-img/var-log.ext4 ] && mount -t ext4 -o loop,rw ${rootmnt}/host/disk-img/var-log.ext4 ${rootmnt}/var/log
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