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ZTS: switch to rsync for directory diffs
While "diff -r" is the most straightforward way of comparing directory trees for differences, it has two major issues: * File metadata is not compared, which means that subtle bugs may be missed even if a test is written that exercises the buggy behaviour. * diff(1) doesn't know how to compare special files -- it assumes they are always different, which means that a test using diff(1) on special files will always fail (resulting in such tests not being added). rsync can be used in a very similar manner to diff (with the -ni flags), but has the additional benefit of being able to detect and resolve many more differences between directory trees. In addition, rsync has a standard set of features and flags while diffs feature set depends on whether you're using GNU or BSD binutils. Note that for several of the test cases we expect that file timestamps will not match. For example, the ctime for a file creation or modify event is stored in the intent log but not the mtime. Thus when replaying the log the correct ctime is set but the current mtime is used. This is the expected behavior, so to prevent these tests from failing, there's a replay_directory_diff function which ignores those kinds of changes. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Aleksa Sarai <cyphar@cyphar.com> Closes #12588
This commit is contained in:
Aleksa Sarai
GitHub
parent
19229e5f1e
commit
669683c4cb
1
.github/workflows/build-dependencies.txt
vendored
1
.github/workflows/build-dependencies.txt
vendored
@ -38,6 +38,7 @@ python3-dev
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python3-packaging
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python3-setuptools
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rng-tools
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rsync
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samba
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sysstat
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uuid-dev
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@ -77,6 +77,7 @@ export SYSTEM_FILES_COMMON='arp
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readlink
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rm
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rmdir
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rsync
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scp
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script
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sed
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@ -4303,3 +4303,86 @@ function wait_for_children #children
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done
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return $rv
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}
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#
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# Compare two directory trees recursively in a manner similar to diff(1), but
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# using rsync. If there are any discrepancies, a summary of the differences are
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# output and a non-zero error is returned.
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#
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# If you're comparing a directory after a ZIL replay, you should set
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# LIBTEST_DIFF_ZIL_REPLAY=1 or use replay_directory_diff which will cause
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# directory_diff to ignore mtime changes (the ZIL replay won't fix up mtime
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# information).
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#
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function directory_diff # dir_a dir_b
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{
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dir_a="$1"
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dir_b="$2"
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zil_replay="${LIBTEST_DIFF_ZIL_REPLAY:-0}"
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# If one of the directories doesn't exist, return 2. This is to match the
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# semantics of diff.
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if ! [ -d "$dir_a" -a -d "$dir_b" ]; then
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return 2
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fi
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# Run rsync with --dry-run --itemize-changes to get something akin to diff
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# output, but rsync is far more thorough in detecting differences (diff
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# doesn't compare file metadata, and cannot handle special files).
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#
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# Also make sure to filter out non-user.* xattrs when comparing. On
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# SELinux-enabled systems the copied tree will probably have different
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# SELinux labels.
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args=("-nicaAHX" '--filter=-x! user.*' "--delete")
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# NOTE: Quite a few rsync builds do not support --crtimes which would be
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# necessary to verify that creation times are being maintained properly.
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# Unfortunately because of this we cannot use it unconditionally but we can
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# check if this rsync build supports it and use it then. This check is
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# based on the same check in the rsync test suite (testsuite/crtimes.test).
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#
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# We check ctimes even with zil_replay=1 because the ZIL does store
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# creation times and we should make sure they match (if the creation times
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# do not match there is a "c" entry in one of the columns).
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if ( rsync --version | grep -q "[, ] crtimes" >/dev/null ); then
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args+=("--crtimes")
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else
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echo "NOTE: This rsync package does not support --crtimes (-N)."
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fi
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# If we are testing a ZIL replay, we need to ignore timestamp changes.
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# Unfortunately --no-times doesn't do what we want -- it will still tell
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# you if the timestamps don't match but rsync will set the timestamps to
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# the current time (leading to an itemised change entry). It's simpler to
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# just filter out those lines.
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if [ "$zil_replay" -eq 0 ]; then
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filter=("cat")
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else
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# Different rsync versions have different numbers of columns. So just
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# require that aside from the first two, all other columns must be
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# blank (literal ".") or a timestamp field ("[tT]").
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filter=("grep" "-v" '^\..[.Tt]\+ ')
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fi
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diff="$(rsync "${args[@]}" "$dir_a/" "$dir_b/" | "${filter[@]}")"
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rv=0
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if [ -n "$diff" ]; then
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echo "$diff"
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rv=1
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fi
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return $rv
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}
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#
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# Compare two directory trees recursively, without checking whether the mtimes
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# match (creation times will be checked if the available rsync binary supports
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# it). This is necessary for ZIL replay checks (because the ZIL does not
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# contain mtimes and thus after a ZIL replay, mtimes won't match).
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#
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# This is shorthand for LIBTEST_DIFF_ZIL_REPLAY=1 directory_diff <...>.
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#
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function replay_directory_diff # dir_a dir_b
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{
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LIBTEST_DIFF_ZIL_REPLAY=1 directory_diff "$@"
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return $?
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}
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@ -166,12 +166,12 @@ log_must zfs destroy -fr $rfs
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cat $TESTDIR/zr010p | log_must zfs receive -o origin=$fs2@s1 $rfs
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mntpnt_old=$(get_prop mountpoint $fs)
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mntpnt_new=$(get_prop mountpoint $rfs)
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log_must diff -r $mntpnt_old $mntpnt_new
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log_must directory_diff $mntpnt_old $mntpnt_new
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log_must zfs destroy -r $rfs
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cat $TESTDIR/zr010p2 | log_must zfs receive -o origin=$fs@s1 $rfs
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mntpnt_old=$(get_prop mountpoint $fs2)
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mntpnt_new=$(get_prop mountpoint $rfs)
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log_must diff -r $mntpnt_old $mntpnt_new
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log_must directory_diff $mntpnt_old $mntpnt_new
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log_pass "zfs receive of full send as clone works"
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@ -83,7 +83,7 @@ test_pool ()
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cat $streamfile | log_must zfs receive $POOL/recvfs
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recv_mntpnt=$(get_prop mountpoint "$POOL/recvfs")
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log_must diff -r $mntpnt $recv_mntpnt
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log_must directory_diff $mntpnt $recv_mntpnt
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log_must zfs destroy -rf $POOL/fs
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log_must zfs destroy -rf $POOL/recvfs
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}
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@ -93,11 +93,8 @@ for i in 1 2 3; do
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done
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log_note "verify snapshot contents"
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for ds in $datasets; do
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diff -q -r /$ds /$ds/.zfs/snapshot/snap > /dev/null 2>&1
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if [[ $? -eq 1 ]]; then
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log_fail "snapshot contents are different from" \
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"the filesystem"
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fi
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[ -d "/$ds/.zfs/snapshot/snap" ] && \
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log_must directory_diff /$ds /$ds/.zfs/snapshot/snap
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done
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# We subtract 3 + 7 + 7 + 1 = 18 for three slashes (/), strlen("TESTFSA") == 7,
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@ -122,7 +122,7 @@ block_device_wait
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old_mntpnt=$(get_prop mountpoint $POOL_NAME/testfs)
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new_mntpnt=$(get_prop mountpoint $POOL_NAME/fixed/testfs)
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log_must diff -r "$old_mntpnt" "$new_mntpnt"
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log_must directory_diff "$old_mntpnt" "$new_mntpnt"
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log_must diff /dev/zvol/$POOL_NAME/testvol /dev/zvol/$POOL_NAME/fixed/testvol
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log_must has_ivset_guid $POOL_NAME/fixed/testfs@snap1
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@ -68,7 +68,7 @@ if [[ "$dnsize" != "1K" ]]; then
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fi
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log_must eval "zfs recv -F $TEST_RECV_FS < $TEST_STREAMINCR"
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log_must diff -r /$TEST_SEND_FS /$TEST_RECV_FS
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log_must directory_diff /$TEST_SEND_FS /$TEST_RECV_FS
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log_must zfs umount $TEST_SEND_FS
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log_must zfs umount $TEST_RECV_FS
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@ -51,10 +51,10 @@ log_must eval "zfs receive $POOL2/rfs <$stream"
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# Verify receipt of normal incrementals to redaction list members.
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log_must eval "zfs send -i $sendfs@snap0 $POOL/stride3@snap >$stream"
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log_must eval "zfs recv $POOL2/rstride3 <$stream"
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log_must diff -r /$POOL/stride3 /$POOL2/rstride3
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log_must directory_diff /$POOL/stride3 /$POOL2/rstride3
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log_must eval "zfs send -i $sendfs@snap0 $POOL/stride5@snap >$stream"
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log_must eval "zfs recv $POOL2/rstride5 <$stream"
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log_must diff -r /$POOL/stride5 /$POOL2/rstride5
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log_must directory_diff /$POOL/stride5 /$POOL2/rstride5
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# But not a normal child that we weren't redacted with respect to.
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log_must eval "zfs send -i $sendfs@snap0 $POOL/hole@snap >$stream"
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@ -73,7 +73,7 @@ log_must mount_redacted -f $POOL2/rint
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# Verify we can receive grandchildren on the child.
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log_must eval "zfs send -i $POOL/int@snap $POOL/rm@snap >$stream"
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log_must eval "zfs receive $POOL2/rrm <$stream"
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log_must diff -r /$POOL/rm /$POOL2/rrm
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log_must directory_diff /$POOL/rm /$POOL2/rrm
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# But not a grandchild that the received child wasn't redacted with respect to.
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log_must eval "zfs send -i $POOL/int@snap $POOL/write@snap >$stream"
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@ -92,13 +92,13 @@ log_mustnot zfs redact $POOL/int@snap book6 $POOL/hole@snap
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# Verify we can receive a full clone of the grandchild on the child.
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log_must eval "zfs send $POOL/write@snap >$stream"
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log_must eval "zfs recv -o origin=$POOL2/rint@snap $POOL2/rwrite <$stream"
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log_must diff -r /$POOL/write /$POOL2/rwrite
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log_must directory_diff /$POOL/write /$POOL2/rwrite
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# Along with other origins.
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log_must eval "zfs recv -o origin=$POOL2/rfs@snap0 $POOL2/rwrite1 <$stream"
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log_must diff -r /$POOL/write /$POOL2/rwrite1
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log_must directory_diff /$POOL/write /$POOL2/rwrite1
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log_must eval "zfs recv -o origin=$POOL2@init $POOL2/rwrite2 <$stream"
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log_must diff -r /$POOL/write /$POOL2/rwrite2
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log_must directory_diff /$POOL/write /$POOL2/rwrite2
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log_must zfs destroy -R $POOL2/rwrite2
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log_must zfs destroy -R $POOL2/rfs
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@ -140,7 +140,7 @@ unmount_redacted $POOL2/rfs
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# sending from the bookmark.
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log_must eval "zfs send -i $sendfs#book7 $POOL/hole1@snap >$stream"
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log_must eval "zfs recv $POOL2/rhole1 <$stream"
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log_must diff -r /$POOL/hole1 /$POOL2/rhole1
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log_must directory_diff /$POOL/hole1 /$POOL2/rhole1
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# Verify we can receive an intermediate clone redacted with respect to a
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# non-subset if we send from the bookmark.
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@ -58,6 +58,6 @@ unmount_redacted $recvfs
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log_must eval "zfs send -L -i $sendfs@snap $clone@snap1 >$stream"
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log_must stream_has_features $stream large_blocks
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log_must eval "zfs recv $recvfs/new <$stream"
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log_must diff -r $clone_mnt $recv_mnt/new
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log_must directory_diff $clone_mnt $recv_mnt/new
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log_pass "Large blocks and redacted send work correctly together."
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@ -48,6 +48,7 @@ log_must eval "zstream redup $sendfile | zfs recv -d $TESTPOOL/recv"
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log_must mkdir /$TESTPOOL/tar
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log_must tar --directory /$TESTPOOL/tar -xzf $tarfile
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log_must diff -r /$TESTPOOL/tar /$TESTPOOL/recv
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# The recv'd filesystem is called "/fs", so only compare that subdirectory.
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log_must directory_diff /$TESTPOOL/tar/fs /$TESTPOOL/recv/fs
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log_pass "zfs can receive dedup send streams with 'zstream redup'"
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@ -212,7 +212,7 @@ function cmp_ds_cont
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srcdir=$(get_prop mountpoint $src_fs)
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dstdir=$(get_prop mountpoint $dst_fs)
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diff -r $srcdir $dstdir > /dev/null 2>&1
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replay_directory_diff $srcdir $dstdir
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return $?
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}
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@ -627,12 +627,12 @@ function file_check
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if [[ -d /$recvfs/.zfs/snapshot/a && -d \
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/$sendfs/.zfs/snapshot/a ]]; then
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diff -r /$recvfs/.zfs/snapshot/a /$sendfs/.zfs/snapshot/a
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directory_diff /$recvfs/.zfs/snapshot/a /$sendfs/.zfs/snapshot/a
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[[ $? -eq 0 ]] || log_fail "Differences found in snap a"
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fi
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if [[ -d /$recvfs/.zfs/snapshot/b && -d \
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/$sendfs/.zfs/snapshot/b ]]; then
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diff -r /$recvfs/.zfs/snapshot/b /$sendfs/.zfs/snapshot/b
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directory_diff /$recvfs/.zfs/snapshot/b /$sendfs/.zfs/snapshot/b
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[[ $? -eq 0 ]] || log_fail "Differences found in snap b"
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fi
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}
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@ -178,8 +178,8 @@ log_must rm /$TESTPOOL/$TESTFS/link_and_unlink.link
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#
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# 4. Copy TESTFS to temporary location (TESTDIR/copy)
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#
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log_must mkdir -p $TESTDIR/copy
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log_must cp -a /$TESTPOOL/$TESTFS/* $TESTDIR/copy/
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log_must mkdir -p $TESTDIR
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log_must rsync -aHAX /$TESTPOOL/$TESTFS/ $TESTDIR/copy
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#
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# 5. Unmount filesystem and export the pool
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@ -213,7 +213,7 @@ log_must ls_xattr /$TESTPOOL/$TESTFS/xattr.dir
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log_must ls_xattr /$TESTPOOL/$TESTFS/xattr.file
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log_note "Verify working set diff:"
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log_must diff -r /$TESTPOOL/$TESTFS $TESTDIR/copy
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log_must replay_directory_diff $TESTDIR/copy /$TESTPOOL/$TESTFS
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log_note "Verify file checksum:"
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typeset checksum1=$(sha256digest /$TESTPOOL/$TESTFS/payload)
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@ -98,8 +98,8 @@ log_must eval 'for i in $(seq $NFILES); do zfs set dnodesize=${dnsize[$RANDOM %
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#
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# 4. Copy TESTFS to temporary location (TESTDIR/copy)
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#
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log_must mkdir -p $TESTDIR/copy
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log_must cp -a /$TESTPOOL/$TESTFS/* $TESTDIR/copy/
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log_must mkdir -p $TESTDIR
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log_must rsync -aHAX /$TESTPOOL/$TESTFS/ $TESTDIR/copy
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#
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# 5. Unmount filesystem and export the pool
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@ -132,6 +132,6 @@ log_note "Verify number of files"
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log_must test "$(ls /$TESTPOOL/$TESTFS/dir0 | wc -l)" -eq $NFILES
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log_note "Verify working set diff:"
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log_must diff -r /$TESTPOOL/$TESTFS $TESTDIR/copy
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log_must replay_directory_diff $TESTDIR/copy /$TESTPOOL/$TESTFS
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log_pass "Replay of intent log succeeds."
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@ -55,24 +55,28 @@ function cleanup
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cd $CWD || log_fail "Could not cd $CWD"
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fi
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snapexists $SNAPFS
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if [[ $? -eq 0 ]]; then
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log_must zfs destroy $SNAPFS
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fi
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snapexists $SNAPFS
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if [[ $? -eq 0 ]]; then
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log_must zfs destroy $SNAPFS
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fi
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if [[ -e $SNAPDIR ]]; then
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log_must rm -rf $SNAPDIR > /dev/null 2>&1
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fi
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if [[ -e $SNAPDIR ]]; then
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log_must rm -rf $SNAPDIR > /dev/null 2>&1
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fi
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if [[ -e $TESTDIR ]]; then
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log_must rm -rf $TESTDIR/* > /dev/null 2>&1
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fi
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if [[ -e $TESTDIR ]]; then
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log_must rm -rf $TESTDIR/* > /dev/null 2>&1
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fi
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if [[ -d "$SNAPSHOT_TARDIR" ]]; then
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log_must rm -rf $SNAPSHOT_TARDIR > /dev/null 2>&1
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fi
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}
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log_assert "Verify an archive of a file system is identical to " \
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"an archive of its snapshot."
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SNAPSHOT_TARDIR="$(mktemp -d /tmp/zfstests_snapshot_002.XXXXXX)"
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log_onexit cleanup
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typeset -i COUNT=21
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@ -87,14 +91,13 @@ typeset i=1
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while [ $i -lt $COUNT ]; do
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log_must file_write -o $OP -f $TESTDIR/file$i \
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-b $BLOCKSZ -c $NUM_WRITES -d $DATA
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(( i = i + 1 ))
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done
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log_note "Create a tarball from $TESTDIR contents..."
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CWD=$PWD
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cd $TESTDIR || log_fail "Could not cd $TESTDIR"
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log_must tar cf $TESTDIR/tarball.original.tar file*
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log_must tar cf $SNAPSHOT_TARDIR/original.tar .
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cd $CWD || log_fail "Could not cd $CWD"
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log_note "Create a snapshot and mount it..."
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@ -106,7 +109,7 @@ log_must rm -f $TESTDIR/file* > /dev/null 2>&1
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log_note "Create tarball of snapshot..."
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CWD=$PWD
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cd $SNAPDIR || log_fail "Could not cd $SNAPDIR"
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log_must tar cf $TESTDIR/tarball.snapshot.tar file*
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log_must tar cf $SNAPSHOT_TARDIR/snapshot.tar .
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cd $CWD || log_fail "Could not cd $CWD"
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log_must mkdir $TESTDIR/original
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@ -114,16 +117,12 @@ log_must mkdir $TESTDIR/snapshot
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CWD=$PWD
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cd $TESTDIR/original || log_fail "Could not cd $TESTDIR/original"
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log_must tar xf $TESTDIR/tarball.original.tar
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log_must tar xf $SNAPSHOT_TARDIR/original.tar
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cd $TESTDIR/snapshot || log_fail "Could not cd $TESTDIR/snapshot"
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log_must tar xf $TESTDIR/tarball.snapshot.tar
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log_must tar xf $SNAPSHOT_TARDIR/snapshot.tar
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|
||||
cd $CWD || log_fail "Could not cd $CWD"
|
||||
|
||||
diff -q -r $TESTDIR/original $TESTDIR/snapshot > /dev/null 2>&1
|
||||
if [[ $? -eq 1 ]]; then
|
||||
log_fail "Directory structures differ."
|
||||
fi
|
||||
|
||||
log_must directory_diff $TESTDIR/original $TESTDIR/snapshot
|
||||
log_pass "Directory structures match."
|
||||
|
||||
@ -54,24 +54,28 @@ function cleanup
|
||||
cd $CWD || log_fail "Could not cd $CWD"
|
||||
fi
|
||||
|
||||
snapexists $SNAPCTR
|
||||
if [[ $? -eq 0 ]]; then
|
||||
log_must zfs destroy $SNAPCTR
|
||||
fi
|
||||
snapexists $SNAPCTR
|
||||
if [[ $? -eq 0 ]]; then
|
||||
log_must zfs destroy $SNAPCTR
|
||||
fi
|
||||
|
||||
if [[ -e $SNAPDIR1 ]]; then
|
||||
log_must rm -rf $SNAPDIR1 > /dev/null 2>&1
|
||||
fi
|
||||
if [[ -e $SNAPDIR1 ]]; then
|
||||
log_must rm -rf $SNAPDIR1 > /dev/null 2>&1
|
||||
fi
|
||||
|
||||
if [[ -e $TESTDIR1 ]]; then
|
||||
log_must rm -rf $TESTDIR1/* > /dev/null 2>&1
|
||||
fi
|
||||
if [[ -e $TESTDIR1 ]]; then
|
||||
log_must rm -rf $TESTDIR1/* > /dev/null 2>&1
|
||||
fi
|
||||
|
||||
if [[ -d "$SNAPSHOT_TARDIR" ]]; then
|
||||
log_must rm -rf $SNAPSHOT_TARDIR > /dev/null 2>&1
|
||||
fi
|
||||
}
|
||||
|
||||
log_assert "Verify that an archive of a dataset is identical to " \
|
||||
"an archive of the dataset's snapshot."
|
||||
|
||||
SNAPSHOT_TARDIR="$(mktemp -d /tmp/zfstests_snapshot_006.XXXXXX)"
|
||||
log_onexit cleanup
|
||||
|
||||
typeset -i COUNT=21
|
||||
@ -85,14 +89,13 @@ typeset i=1
|
||||
while [ $i -lt $COUNT ]; do
|
||||
log_must file_write -o $OP -f $TESTDIR1/file$i \
|
||||
-b $BLOCKSZ -c $NUM_WRITES -d $DATA
|
||||
|
||||
(( i = i + 1 ))
|
||||
done
|
||||
|
||||
log_note "Create a tarball from $TESTDIR1 contents..."
|
||||
CWD=$PWD
|
||||
cd $TESTDIR1 || log_fail "Could not cd $TESTDIR1"
|
||||
log_must tar cf $TESTDIR1/tarball.original.tar file*
|
||||
log_must tar cf $SNAPSHOT_TARDIR/original.tar .
|
||||
cd $CWD || log_fail "Could not cd $CWD"
|
||||
|
||||
log_note "Create a snapshot and mount it..."
|
||||
@ -104,7 +107,7 @@ log_must rm -f $TESTDIR1/file* > /dev/null 2>&1
|
||||
log_note "Create tarball of snapshot..."
|
||||
CWD=$PWD
|
||||
cd $SNAPDIR1 || log_fail "Could not cd $SNAPDIR1"
|
||||
log_must tar cf $TESTDIR1/tarball.snapshot.tar file*
|
||||
log_must tar cf $SNAPSHOT_TARDIR/snapshot.tar .
|
||||
cd $CWD || log_fail "Could not cd $CWD"
|
||||
|
||||
log_must mkdir $TESTDIR1/original
|
||||
@ -112,16 +115,12 @@ log_must mkdir $TESTDIR1/snapshot
|
||||
|
||||
CWD=$PWD
|
||||
cd $TESTDIR1/original || log_fail "Could not cd $TESTDIR1/original"
|
||||
log_must tar xf $TESTDIR1/tarball.original.tar
|
||||
log_must tar xf $SNAPSHOT_TARDIR/original.tar
|
||||
|
||||
cd $TESTDIR1/snapshot || log_fail "Could not cd $TESTDIR1/snapshot"
|
||||
log_must tar xf $TESTDIR1/tarball.snapshot.tar
|
||||
log_must tar xf $SNAPSHOT_TARDIR/snapshot.tar
|
||||
|
||||
cd $CWD || log_fail "Could not cd $CWD"
|
||||
|
||||
diff -q -r $TESTDIR1/original $TESTDIR1/snapshot > /dev/null 2>&1
|
||||
if [[ $? -eq 1 ]]; then
|
||||
log_fail "Directory structures differ."
|
||||
fi
|
||||
|
||||
log_must directory_diff $TESTDIR1/original $TESTDIR1/snapshot
|
||||
log_pass "Directory structures match."
|
||||
|
||||
Loading…
Reference in New Issue
Block a user