Dustin C. Hatch
9d507c74ae
*systemd-tmpfiles* can create btrfs subvolumes with the `v` entry type. Using this mechanism instead of the `init-storage` script will allow for greater flexibility when adding other subvolumes later. Unfortunately, the default configuration for *systemd-tmpfiles* already includes an entry for `/var/log` with the `d` (directory) type. Since individual entries cannot be overridden, we need to modify this entry.
56 lines
1.1 KiB
Bash
Executable File
56 lines
1.1 KiB
Bash
Executable File
#!/bin/sh
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# vim: set sw=4 ts=4 sts=4 et :
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cleanup() {
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if [ -n "${tmpdir}" ] && [ "${tmpdir}" != / ]; then
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if mountpoint -q "${tmpdir}"; then
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umount "${tmpdir}"
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fi
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rm -rf "${tmpdir}"
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unset tmpdir
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fi
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}
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copy_var() {
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dev="$1"
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echo 'Copying /var contents to data volume'
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mount -o subvol=var "${dev}" "${tmpdir}" || exit
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cp -auv /var/. "${tmpdir}" || exit
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umount "${tmpdir}"
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}
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format_dev() {
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dev="$1"
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printf 'Creating BTRFS filesystem on %s\n' "${dev}"
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mkfs.btrfs "${dev}" || exit
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mount "${dev}" "${tmpdir}" || exit
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btrfs subvolume create "${tmpdir}"/var || exit
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umount "${dev}" || exit
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}
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has_fs() {
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dev="$1"
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fstype=$(blkid -o value -s TYPE "${dev}")
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[ -n "${fstype}" ]
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}
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datapart=$(findfs PARTLABEL=dch-data)
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if [ -b "${datapart}" ]; then
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printf 'Found data partition: %s\n' "${datapart}"
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else
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echo 'Could not identify data partition' >&2
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exit 1
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fi
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trap cleanup INT TERM QUIT EXIT
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tmpdir=/run/storinit
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mkdir -p "${tmpdir}"
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if ! has_fs "${datapart}"; then
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format_dev "${datapart}"
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fi
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copy_var "${datapart}"
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