2 # SPDX-License-Identifier: GPL-2.0
3 # Copyright (c) 2017, Jeff Layton <jlayton@redhat.com>
7 # Open a file several times, write to it, fsync on all fds and make sure that
8 # they all return 0. Change the device to start throwing errors. Write again
9 # on all fds and fsync on all fds. Ensure that we get errors on all of them.
10 # Then fsync on all one last time and verify that all return 0.
13 seqres=$RESULT_DIR/$seq
14 echo "QA output created by $seq"
18 status=1 # failure is the default!
19 trap "_cleanup; exit \$status" 0 1 2 3 15
24 rm -rf $tmp.* $testdir
28 # get standard environment, filters and checks
33 # real QA test starts here
35 _require_dm_target error
36 _require_test_program fsync-err
37 _require_test_program dmerror
39 # bring up dmerror device
42 # Replace first device with error-test device
43 old_SCRATCH_DEV=$SCRATCH_DEV
44 SCRATCH_DEV_POOL=`echo $SCRATCH_DEV_POOL | perl -pe "s#$SCRATCH_DEV#$DMERROR_DEV#"`
45 SCRATCH_DEV=$DMERROR_DEV
48 _require_scratch_dev_pool
52 echo "Format and mount"
54 # Build a filesystem with 2 devices that stripes the data across
55 # both devices, but mirrors metadata across both. Then, make one
56 # of the devices fail and test what it does.
57 _scratch_pool_mkfs "-d raid0 -m raid1" > $seqres.full 2>&1
60 # How much do we need to write? We need to hit all of the stripes. btrfs uses a
61 # fixed 64k stripesize, so write enough to hit each one. In the case of
62 # compression, each 128K input data chunk will be compressed to 4K (because of
63 # the characters written are duplicate). Therefore we have to write
64 # (128K * 16) = 2048K to make sure every stripe can be hit.
65 number_of_devices=`echo $SCRATCH_DEV_POOL | wc -w`
66 write_kb=$(($number_of_devices * 2048))
67 _require_fs_space $SCRATCH_MNT $write_kb
69 testfile=$SCRATCH_MNT/fsync-err-test
71 SCRATCH_DEV=$old_SCRATCH_DEV
72 $here/src/fsync-err -b $(($write_kb * 1024)) -d $here/src/dmerror $testfile
75 _dmerror_load_working_table
77 # fs may be corrupt after this -- attempt to repair it
78 _repair_scratch_fs >> $seqres.full
80 # remove dmerror device