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btrfs-progs: tests: missing device and slack space report 

Verify that a missing device will not result in reporting a negative
value interpreted as 16EiB.

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2017-09-04 18:33:48 +02:00
parent 8c6b05d726
commit df4a04484a
1 changed files with 40 additions and 0 deletions
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40
tests/misc-tests/023-device-usage-with-missing-device/test.sh Executable file
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@ -0,0 +1,40 @@
#!/bin/bash
# check if 'device slack' is reported as zero when a device is missing
source "$TOP/tests/common"
check_prereq btrfs-image
check_prereq mkfs.btrfs
check_prereq btrfs
setup_root_helper
test_run()
{
# empty filesystem, with enough redundancy so degraded mount works
run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f -d raid1 -m raid1 $dev1 $dev2
TEST_DEV="$dev1"
run_check_mount_test_dev
run_check $SUDO_HELPER "$TOP/btrfs" filesystem usage "$TEST_MNT"
run_check_stdout $SUDO_HELPER "$TOP/btrfs" device usage "$TEST_MNT" | \
grep -q "slack.*16\\.00EiB" && _fail
run_check_umount_test_dev
run_mayfail wipefs -a $dev2
run_check $SUDO_HELPER losetup -d $dev2
unset loopdevs[2]
run_check_mount_test_dev -o degraded,ro
run_check $SUDO_HELPER "$TOP/btrfs" filesystem usage "$TEST_MNT"
run_check_stdout $SUDO_HELPER "$TOP/btrfs" device usage "$TEST_MNT" | \
grep -q "slack.*16\\.00EiB" && _fail
run_check_umount_test_dev
}
setup_loopdevs 2
prepare_loopdevs
dev1=${loopdevs[1]}
dev2=${loopdevs[2]}
test_run
cleanup_loopdevs