| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (C) 2018 SUSE Linux Products GmbH. All Rights Reserved. |
| # |
| # FS QA Test No. 168 |
| # |
| # Test that we are able to do send operations when one of the source snapshots |
| # (or subvolume) has a file that is deleted while there is still a open file |
| # descriptor for that file. |
| # |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| rm -f $tmp.* |
| rm -fr $send_files_dir |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| |
| # real QA test starts here |
| _supported_fs btrfs |
| _require_test |
| _require_scratch |
| _require_btrfs_command "property" |
| _require_fssum |
| |
| send_files_dir=$TEST_DIR/btrfs-test-$seq |
| |
| rm -f $seqres.full |
| rm -fr $send_files_dir |
| mkdir $send_files_dir |
| |
| _scratch_mkfs >>$seqres.full 2>&1 |
| _scratch_mount |
| |
| # Create a subvolume used for first full send test and used to create two |
| # snapshots for the incremental send test. |
| $BTRFS_UTIL_PROG subvolume create $SCRATCH_MNT/sv1 | _filter_scratch |
| |
| # Create some test files. |
| $XFS_IO_PROG -f -c "pwrite -S 0xf1 0 64K" $SCRATCH_MNT/sv1/foo >>$seqres.full |
| $XFS_IO_PROG -f -c "pwrite -S 0x7b 0 90K" $SCRATCH_MNT/sv1/bar >>$seqres.full |
| $XFS_IO_PROG -f -c "pwrite -S 0xea 0 256K" $SCRATCH_MNT/sv1/baz >>$seqres.full |
| |
| # Flush the previous buffered writes, since setting a subvolume to RO mode |
| # does not do it and we want to check if the data is correctly transmitted by |
| # the send operations. |
| sync |
| |
| # Keep an open file descriptor on file bar. |
| exec 73<$SCRATCH_MNT/sv1/bar |
| |
| # While the file descriptor is open, delete the file, set the subvolume to |
| # read-only mode and see if a full send operation succeeds. |
| unlink $SCRATCH_MNT/sv1/bar |
| $BTRFS_UTIL_PROG property set $SCRATCH_MNT/sv1 ro true |
| $FSSUM_PROG -A -f -w $send_files_dir/sv1.fssum $SCRATCH_MNT/sv1 |
| $BTRFS_UTIL_PROG send -f $send_files_dir/sv1.send $SCRATCH_MNT/sv1 2>&1 \ |
| | _filter_scratch |
| |
| # Now that the we did the full send, close the file descriptor and set the |
| # subvolume back to read-write mode. |
| exec 73>&- |
| $BTRFS_UTIL_PROG property set $SCRATCH_MNT/sv1 ro false |
| |
| # Now try an incremental send operation while there's an open file descriptor |
| # for a file that was deleted from the send snapshot (while it was in read-write |
| # mode). |
| |
| # Create a snapshot of the subvolume, to be used later as the parent snapshot |
| # for an incremental send operation. |
| $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT/sv1 $SCRATCH_MNT/snap1 \ |
| | _filter_scratch |
| |
| # First do a full send of this snapshot. |
| $FSSUM_PROG -A -f -w $send_files_dir/snap1.fssum $SCRATCH_MNT/snap1 |
| $BTRFS_UTIL_PROG send -f $send_files_dir/snap1.send $SCRATCH_MNT/snap1 2>&1 \ |
| | _filter_scratch |
| |
| # Modify file baz, to check that the incremental send operation does not miss |
| # that this file has changed. |
| $XFS_IO_PROG -c "pwrite -S 0x19 4K 8K" $SCRATCH_MNT/sv1/baz >>$seqres.full |
| |
| # Create a second snapshot of the subvolume, to be used later as the send |
| # snapshot of an incremental send operation. |
| $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT/sv1 $SCRATCH_MNT/snap2 \ |
| | _filter_scratch |
| |
| # Temporarily turn the second snapshot to read-write mode and then open a file |
| # descriptor on its foo file. |
| $BTRFS_UTIL_PROG property set $SCRATCH_MNT/snap2 ro false |
| exec 73<$SCRATCH_MNT/snap2/foo |
| |
| # Delete the foo file from the second snapshot while holding the file descriptor |
| # open. |
| unlink $SCRATCH_MNT/snap2/foo |
| |
| # Set the second snapshot back to RO mode, so that we can use it for the |
| # incremental send operation. |
| $BTRFS_UTIL_PROG property set $SCRATCH_MNT/snap2 ro true |
| |
| # Do the incremental send while there's an open file descriptor on file foo from |
| # the second snapshot. |
| $FSSUM_PROG -A -f -w $send_files_dir/snap2.fssum $SCRATCH_MNT/snap2 |
| $BTRFS_UTIL_PROG send -f $send_files_dir/snap2.send -p $SCRATCH_MNT/snap1 \ |
| $SCRATCH_MNT/snap2 2>&1 | _filter_scratch |
| |
| # Now that the incremental send is done close the file descriptor on snap2/foo. |
| exec 73>&- |
| |
| # Recreate the filesystem using the send streams and check all files exist, |
| # except for the ones we deleted while holding an open file descriptor on them, |
| # and with correct data and metadata (size, timestamps, ownership, permissions). |
| _scratch_unmount |
| _scratch_mkfs >>$seqres.full 2>&1 |
| _scratch_mount |
| |
| $BTRFS_UTIL_PROG receive -f $send_files_dir/sv1.send $SCRATCH_MNT |
| $FSSUM_PROG -r $send_files_dir/sv1.fssum $SCRATCH_MNT/sv1 |
| $BTRFS_UTIL_PROG receive -f $send_files_dir/snap1.send $SCRATCH_MNT |
| $FSSUM_PROG -r $send_files_dir/snap1.fssum $SCRATCH_MNT/snap1 |
| $BTRFS_UTIL_PROG receive -f $send_files_dir/snap2.send $SCRATCH_MNT |
| $FSSUM_PROG -r $send_files_dir/snap2.fssum $SCRATCH_MNT/snap2 |
| |
| status=0 |
| exit |