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https://github.com/kdave/btrfs-progs
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ea1e4c8a7b
When running the tests as root SUDO_HELPER is empty, so that `run_check "" dd ...` is run, and it fails because the empty command is not found. Pull-request: #351 Issue: #352 Author: Pierre Labastie <pierre.labastie@neuf.fr> Signed-off-by: David Sterba <dsterba@suse.com>
89 lines
2.5 KiB
Bash
Executable File
89 lines
2.5 KiB
Bash
Executable File
#!/bin/bash
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# Verify that a seeding device can be mounted several times
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source "$TEST_TOP/common"
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check_prereq btrfs-image
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check_prereq mkfs.btrfs
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check_prereq btrfs
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setup_root_helper
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setup_loopdevs 6
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prepare_loopdevs
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ORIG_TEST_DEV="$TEST_DEV"
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ORIG_TEST_MNT="$TEST_MNT"
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# Create seeding device
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TEST_DEV=${loopdevs[1]}
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seeddev=${loopdevs[1]}
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run_check_mkfs_test_dev -L BTRFS-TESTS-SEED
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run_check_mount_test_dev
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for i in `seq 6`; do
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run_check $SUDO_HELPER dd if=/dev/zero of="$TEST_MNT/file${i}" bs=1M count=1 status=none
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# Something to distinguish the contents
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run_check md5sum "$TEST_MNT/file${i}"
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done
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run_check_umount_test_dev
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# Mark 1 as seeding
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run_check $SUDO_HELPER "$TOP/btrfstune" -S 1 "$TEST_DEV"
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TEST_DEV=${loopdevs[1]}
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nextdevice() {
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local nextdev
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nextdev="$1"
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# Mount again, as seeding device
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TEST_DEV=${loopdevs[1]}
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mnt=mnt$nextdev
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run_check mkdir -p "$mnt"
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TEST_MNT="$mnt"
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run_check_mount_test_dev
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run_check $SUDO_HELPER "$TOP/btrfs" device add ${loopdevs[$nextdev]} "$TEST_MNT"
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run_mustfail "writable file despite read-only mount" \
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$SUDO_HELPER dd if=/dev/zero of="$TEST_MNT/file$nextdevice" bs=1M count=1 status=none
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run_check $SUDO_HELPER mount -o remount,rw "$TEST_MNT"
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# Rewrite the file
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md5sum=$(run_check_stdout md5sum "$TEST_MNT/file$nextdev" | awk '{print $1}')
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yes "$nextdev" | run_check $SUDO_HELPER dd of="$TEST_MNT/file$nextdev" bs=1M count=1 status=none
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md5sum2=$(run_check_stdout md5sum "$TEST_MNT/file$nextdev" | awk '{print $1}')
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if [ "$md5sum" == "$md5sum2" ]; then
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_fail "file contents mismatch after rewrite"
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fi
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# Umount by the new device
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run_check_umount_test_dev "${loopdevs[$nextdev]}"
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# Try to mount it again by the new device
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TEST_DEV="${loopdevs[$nextdev]}"
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run_check_mount_test_dev
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# Check that it stays writable
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run_check $SUDO_HELPER touch "$TEST_MNT"/writable-after-remount
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# Change label
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run_check $SUDO_HELPER "$TOP/btrfs" filesystem label "$TEST_MNT" "BTRFS-TESTS-SEED-$nextdev"
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# And that the contents is the same
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md5sum=$(run_check_stdout md5sum "$TEST_MNT/file$nextdev" | awk '{print $1}')
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if [ "$md5sum" != "$md5sum2" ]; then
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_fail "file contents not same after remount"
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fi
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}
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# Keep previous device(s) mounted, create a new filesystem from the seeding device
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nextdevice 2
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nextdevice 3
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nextdevice 4
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nextdevice 5
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# Final umount
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# Skip seeding device, loop device 1,
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run_check $SUDO_HELPER umount ${loopdevs[2]}
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run_check $SUDO_HELPER umount ${loopdevs[3]}
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run_check $SUDO_HELPER umount ${loopdevs[4]}
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run_check $SUDO_HELPER umount ${loopdevs[5]}
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cleanup_loopdevs
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rm -rf -- mnt[0-9]
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