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83 lines
1.9 KiB
Bash
83 lines
1.9 KiB
Bash
#!/usr/bin/env bash
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# SPDX-FileCopyrightText: 2022 Richard Brežák <richard@brezak.sk>
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#
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# SPDX-License-Identifier: LGPL-3.0-or-later
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function recurse_children()
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{
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local volume="${1}"
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local dir="${2}"
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local relmount="${3}"
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local children="${4}"
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local action="${5}"
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for child in $children
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do
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if [ "${child}" == "${volume}" ]
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then
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continue
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fi
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recursive_perform "${child}" "${dir}/$(basename "${child}")" "${action}"
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done
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}
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function recursive_perform()
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{
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local volume="${1}"
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local dir="${2}"
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local action="${3}"
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local relmount="$(zfs get -Ho value :relmount "${volume}")"
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local children="$(zfs list -Hrd 1 "${volume}" -o name | tr '\n' ' ')"
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if ! [ -z "${relmount}" ] && [ "${relmount}" != "-" ]
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then
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case "${relmount}" in
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"yes")
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eval "${action}"
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recurse_children "${volume}" "${dir}" "${relmount}" "${children}" "${action}"
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;;
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"pass")
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recurse_children "${volume}" "${dir}" "${relmount}" "${children}" "${action}"
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;;
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"*")
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;;
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esac
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fi
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}
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action="${1}"
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shift 1
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case $action in
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"mount")
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zfs_src="${1}"
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dst_dir="${2}"
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recursive_perform "${zfs_src}" "${dst_dir}" 'mount -o X-mount.mkdir -t zfs "${volume}" "${dir}"'
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;;
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"mount-snapshot")
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zfs_src="${1}"
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dst_dir="${2}"
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snapshot="${3}"
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recursive_perform "${zfs_src}" "${dst_dir}" 'mount -o X-mount.mkdir -t zfs "${volume}"@'"${snapshot}"' "${dir}"'
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;;
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"umount")
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zfs_src="${1}"
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dst_dir="${2}"
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recursive_perform "${zfs_src}" "${dst_dir}" 'umount -t zfs "${dir}"'
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;;
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"snapshot")
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root="${1}"
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snapshot="${2}"
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recursive_perform "${root}" "${root}" 'zfs snapshot "${volume}"@'"${snapshot}"
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;;
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"*")
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;;
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esac
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