| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2016 Fujitsu. All Rights Reserved. |
| # |
| # FS QA Test 352 |
| # |
| # Test fiemap ioctl on heavily deduped file |
| # |
| # This test case will check if reserved extent map searching go |
| # without problem and return correct SHARED flag. |
| # Which btrfs will soft lock up and return wrong shared flag. |
| # |
| . ./common/preamble |
| _begin_fstest auto clone fiemap |
| |
| # Import common functions. |
| . ./common/filter |
| . ./common/reflink |
| . ./common/punch |
| |
| |
| # Modify as appropriate. |
| _require_scratch_reflink |
| _require_xfs_io_command "fiemap" |
| |
| # The size is too small, this will result in an inline extent and then reflink |
| # will simply be a copy on btrfs, so exclude compression. |
| _require_no_compress |
| |
| _scratch_mkfs > /dev/null 2>&1 |
| _scratch_mount |
| |
| blocksize=$(_get_file_block_size $SCRATCH_MNT) |
| _require_congruent_file_oplen $SCRATCH_MNT $blocksize |
| file="$SCRATCH_MNT/tmp" |
| |
| # Golden output is for $LOAD_FACTOR == 1 case |
| # and assumes a normal blocksize of 4K |
| orig_nr=8192 |
| orig_blocksize=4096 |
| orig_last_extent=$(($orig_nr * $orig_blocksize / 512)) |
| orig_end=$(($orig_last_extent + $orig_blocksize / 512 - 1)) |
| |
| # Real output |
| nr=$(($orig_nr * $LOAD_FACTOR)) |
| last_extent=$(($nr * $blocksize / 512)) |
| end=$(($last_extent + $blocksize / 512 - 1)) |
| |
| # write the initial block for later reflink |
| _pwrite_byte 0xcdcdcdcd 0 $blocksize $file > /dev/null |
| |
| # use reflink to create the rest of the file, whose all extents are all |
| # pointing to the first extent |
| for i in $(seq 1 $nr); do |
| _reflink_range $file 0 $file $(($i * $blocksize)) $blocksize > /dev/null |
| done |
| |
| # then call fiemap on that file to test both the shared flag and if |
| # reserved extent mapping search will cause soft lockup |
| $XFS_IO_PROG -c "fiemap -v" $file | _filter_fiemap_flags > $tmp.out |
| cat $tmp.out >> $seqres.full |
| |
| # refact the $LOAD_FACTOR to 1 to match the golden output |
| sed -i -e "s/$(($last_extent - 1))/$(($orig_last_extent - 1))/" \ |
| -e "s/$last_extent/$orig_last_extent/" \ |
| -e "s/$end/$orig_end/" $tmp.out |
| cat $tmp.out |
| |
| # success, all done |
| status=0 |
| exit |
