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apfstests/common/dmerror
T
Eric Sandeen 50266c22dc generic: _require_dm_target() helper
generic/085 was failing on a machine w/o devicemapper kernel
support because it requires the linear target, but didn't
explicitly test for it.

I could have cut & pasted _require_dm_linear(), but chose
to go the route of a generic helper, _require_dm_target $FOO,
because some day someone will need the zero target, the error
target, or who knows.

Add the helper, use it in test generic/085, and convert
_require_dm_flakey, _require_dm_snapshot, and
_dmerror_required with this new helper.

Reported-by: Angelo Dureghello <angelo.dureghello@nomovok.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2015-10-14 14:08:42 +11:00

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##/bin/bash
#
# Copyright (c) 2015 Oracle. All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
#
# common functions for setting up and tearing down a dmerror device
_dmerror_init()
{
local dm_backing_dev=$SCRATCH_DEV
$DMSETUP_PROG remove error-test > /dev/null 2>&1
local blk_dev_size=`blockdev --getsz $dm_backing_dev`
DMERROR_DEV='/dev/mapper/error-test'
DMLINEAR_TABLE="0 $blk_dev_size linear $dm_backing_dev 0"
$DMSETUP_PROG create error-test --table "$DMLINEAR_TABLE" || \
_fatal "failed to create dm linear device"
DMERROR_TABLE="0 $blk_dev_size error $dm_backing_dev 0"
}
_dmerror_mount_options()
{
echo `_common_dev_mount_options $*` $DMERROR_DEV $SCRATCH_MNT
}
_dmerror_mount()
{
_mount -t $FSTYP `_dmerror_mount_options $*`
}
_dmerror_cleanup()
{
$UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1
$DMSETUP_PROG remove error-test > /dev/null 2>&1
}
_dmerror_load_table()
{
$DMSETUP_PROG suspend error-test
[ $? -ne 0 ] && _fail "dmsetup suspend failed"
$DMSETUP_PROG load error-test --table "$DMERROR_TABLE"
[ $? -ne 0 ] && _fail "dmsetup failed to load error table"
$DMSETUP_PROG resume error-test
[ $? -ne 0 ] && _fail "dmsetup resume failed"
}