69 lines
2.3 KiB
Bash
Executable File
69 lines
2.3 KiB
Bash
Executable File
#!/bin/sh
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# Copyright © 2005-2010 Roger Leigh <rleigh@codelibre.net>
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#
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# schroot is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# schroot is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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#####################################################################
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set -e
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. "$SETUP_DATA_DIR/common-data"
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. "$SETUP_DATA_DIR/common-functions"
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. "$SETUP_DATA_DIR/common-config"
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if [ "$CHROOT_TYPE" = "btrfs-snapshot" ]; then
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if [ $STAGE = "setup-start" ]; then
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if [ ! -d "$CHROOT_BTRFS_SOURCE_SUBVOLUME" ]; then
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fatal "Btrfs source subvolume directory '$CHROOT_BTRFS_SOURCE_SUBVOLUME' does not exist"
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fi
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if [ ! -d "$CHROOT_BTRFS_SNAPSHOT_DIRECTORY" ]; then
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fatal "Btrfs snapshot directory '$CHROOT_BTRFS_SNAPSHOT_DIRECTORY' does not exist"
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fi
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info "Creating snapshot $CHROOT_BTRFS_SNAPSHOT_NAME from subvolume $CHROOT_BTRFS_SOURCE_SUBVOLUME"
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if [ "$VERBOSE" = "verbose" ]; then
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btrfs subvolume snapshot "$CHROOT_BTRFS_SOURCE_SUBVOLUME" \
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"$CHROOT_BTRFS_SNAPSHOT_NAME"
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else
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btrfs subvolume snapshot "$CHROOT_BTRFS_SOURCE_SUBVOLUME" \
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"$CHROOT_BTRFS_SNAPSHOT_NAME" > /dev/null
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fi
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elif [ $STAGE = "setup-stop" ]; then
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if [ -d "$CHROOT_BTRFS_SNAPSHOT_NAME" ]; then
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info "Deleting snapshot $CHROOT_BTRFS_SNAPSHOT_NAME"
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if [ "$VERBOSE" = "verbose" ]; then
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btrfs subvolume delete "$CHROOT_BTRFS_SNAPSHOT_NAME" || true
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else
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btrfs subvolume delete "$CHROOT_BTRFS_SNAPSHOT_NAME" > /dev/null || true
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fi
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else
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# The block device no longer exists, or was never created,
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# for example on lvcreate failure.
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warn "$CHROOT_BTRFS_SNAPSHOT_NAME does not exist (it may have been removed previously)"
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fi
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fi
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fi
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