forked from Mirrors/btrfs-progs
51 lines
1.6 KiB
Bash
51 lines
1.6 KiB
Bash
#!/bin/bash
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# Test btrfs-image with multiple devices filesystem and verify that restoring
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# the created image works against a single device.
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source "$TEST_TOP/common"
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check_prereq btrfs-image
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check_prereq mkfs.btrfs
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check_prereq btrfs
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setup_root_helper
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rm -f dev1 dev2
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run_check truncate -s 2G dev1
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run_check truncate -s 2G dev2
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chmod a+w dev1 dev2
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loop1=$(run_check_stdout $SUDO_HELPER losetup --find --show dev1)
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loop2=$(run_check_stdout $SUDO_HELPER losetup --find --show dev2)
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# Create the test file system.
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run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f $loop1 $loop2
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run_check $SUDO_HELPER mount $loop1 "$TEST_MNT"
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run_check $SUDO_HELPER dd bs=1M count=1 if=/dev/zero "of=$TEST_MNT/foobar"
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orig_md5=$(run_check_stdout md5sum "$TEST_MNT/foobar" | cut -d ' ' -f 1)
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run_check $SUDO_HELPER umount "$TEST_MNT"
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# Create the image to restore later.
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run_check $SUDO_HELPER "$TOP/btrfs-image" $loop1 "$IMAGE"
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# Wipe out the filesystem from the devices, restore the image on a single
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# device, check everything works and file foobar is there and with 1Mb of
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# zeroes.
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run_check $SUDO_HELPER wipefs -a $loop1
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run_check $SUDO_HELPER wipefs -a $loop2
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run_check $SUDO_HELPER $TOP/btrfs-image -r "$IMAGE" $loop1
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run_check $SUDO_HELPER mount $loop1 "$TEST_MNT"
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new_md5=$(run_check_stdout md5sum "$TEST_MNT/foobar" | cut -d ' ' -f 1)
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run_check $SUDO_HELPER umount "$TEST_MNT"
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# Cleanup loop devices.
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run_check $SUDO_HELPER losetup -d $loop1
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run_check $SUDO_HELPER losetup -d $loop2
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rm -f dev1 dev2
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# Compare the file digests.
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[ $orig_md5 == $new_md5 ] || _fail "File digests do not match"
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