##/bin/bash # SPDX-License-Identifier: GPL-2.0 # Copyright (c) 2013 Fusion IO, Inc. All Rights Reserved. # # common functions for setting up and tearing down a dmflakey device FLAKEY_ALLOW_WRITES=0 FLAKEY_DROP_WRITES=1 FLAKEY_ERROR_WRITES=2 _init_flakey() { # Scratch device local BLK_DEV_SIZE=`blockdev --getsz $SCRATCH_DEV` FLAKEY_DEV=/dev/mapper/flakey-test FLAKEY_TABLE="0 $BLK_DEV_SIZE flakey $SCRATCH_DEV 0 180 0" FLAKEY_TABLE_DROP="0 $BLK_DEV_SIZE flakey $SCRATCH_DEV 0 0 180 1 drop_writes" FLAKEY_TABLE_ERROR="0 $BLK_DEV_SIZE flakey $SCRATCH_DEV 0 0 180 1 error_writes" _dmsetup_create flakey-test --table "$FLAKEY_TABLE" || \ _fatal "failed to create flakey device" # Realtime device if [ -n "$SCRATCH_RTDEV" ]; then if [ -z "$NON_FLAKEY_RTDEV" ]; then # Set up the device switch local backing_dev="$SCRATCH_RTDEV" export NON_FLAKEY_RTDEV="$SCRATCH_RTDEV" SCRATCH_RTDEV=/dev/mapper/flakey-rttest else # Already set up; recreate tables local backing_dev="$NON_FLAKEY_RTDEV" fi local BLK_DEV_SIZE=`blockdev --getsz $backing_dev` FLAKEY_RTTABLE="0 $BLK_DEV_SIZE flakey $backing_dev 0 180 0" FLAKEY_RTTABLE_DROP="0 $BLK_DEV_SIZE flakey $backing_dev 0 0 180 1 drop_writes" FLAKEY_RTTABLE_ERROR="0 $BLK_DEV_SIZE flakey $backing_dev 0 0 180 1 error_writes" _dmsetup_create flakey-rttest --table "$FLAKEY_RTTABLE" || \ _fatal "failed to create flakey rt device" fi # External log device if [ -n "$SCRATCH_LOGDEV" ]; then if [ -z "$NON_FLAKEY_LOGDEV" ]; then # Set up the device switch local backing_dev="$SCRATCH_LOGDEV" export NON_FLAKEY_LOGDEV="$SCRATCH_LOGDEV" SCRATCH_LOGDEV=/dev/mapper/flakey-logtest else # Already set up; recreate tables local backing_dev="$NON_FLAKEY_LOGDEV" fi local BLK_DEV_SIZE=`blockdev --getsz $backing_dev` FLAKEY_LOGTABLE="0 $BLK_DEV_SIZE flakey $backing_dev 0 180 0" FLAKEY_LOGTABLE_DROP="0 $BLK_DEV_SIZE flakey $backing_dev 0 0 180 1 drop_writes" FLAKEY_LOGTABLE_ERROR="0 $BLK_DEV_SIZE flakey $backing_dev 0 0 180 1 error_writes" _dmsetup_create flakey-logtest --table "$FLAKEY_LOGTABLE" || \ _fatal "failed to create flakey log device" fi } _mount_flakey() { _scratch_options mount mount -t $FSTYP $SCRATCH_OPTIONS $MOUNT_OPTIONS $FLAKEY_DEV $SCRATCH_MNT } _unmount_flakey() { $UMOUNT_PROG $SCRATCH_MNT } _cleanup_flakey() { # If dmsetup load fails then we need to make sure to do resume here # otherwise the umount will hang test -n "$NON_FLAKEY_LOGDEV" && $DMSETUP_PROG resume flakey-logtest &> /dev/null test -n "$NON_FLAKEY_RTDEV" && $DMSETUP_PROG resume flakey-rttest &> /dev/null $DMSETUP_PROG resume flakey-test > /dev/null 2>&1 $UMOUNT_PROG $SCRATCH_MNT > /dev/null 2>&1 _dmsetup_remove flakey-test test -n "$NON_FLAKEY_LOGDEV" && _dmsetup_remove flakey-logtest test -n "$NON_FLAKEY_RTDEV" && _dmsetup_remove flakey-rttest if [ -n "$NON_FLAKEY_LOGDEV" ]; then SCRATCH_LOGDEV="$NON_FLAKEY_LOGDEV" unset NON_FLAKEY_LOGDEV fi if [ -n "$NON_FLAKEY_RTDEV" ]; then SCRATCH_RTDEV="$NON_FLAKEY_RTDEV" unset NON_FLAKEY_RTDEV fi } # _load_flakey_table