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e07a2039b6
Add test_part_01.sh to test the UBLK_F_NO_AUTO_PART_SCAN feature flag which allows suppressing automatic partition scanning during device startup while still allowing manual partition probing. The test verifies: - Normal behavior: partitions are auto-detected without the flag - With flag: partitions are not auto-detected during START_DEV - Manual scan: blockdev --rereadpt works with the flag Also update kublk tool to support --no_auto_part_scan option and recognize the feature flag. Signed-off-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
105 lines
2.3 KiB
Bash
Executable File
105 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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. "$(cd "$(dirname "$0")" && pwd)"/test_common.sh
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ERR_CODE=0
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format_backing_file()
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{
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local backing_file=$1
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# Create ublk device to write partition table
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local tmp_dev=$(_add_ublk_dev -t loop "${backing_file}")
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[ $? -ne 0 ] && return 1
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# Write partition table with sfdisk
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sfdisk /dev/ublkb"${tmp_dev}" > /dev/null 2>&1 <<EOF
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label: dos
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start=2048, size=100MiB, type=83
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start=206848, size=100MiB, type=83
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EOF
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local ret=$?
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"${UBLK_PROG}" del -n "${tmp_dev}"
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return $ret
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}
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test_auto_part_scan()
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{
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local backing_file=$1
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# Create device WITHOUT --no_auto_part_scan
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local dev_id=$(_add_ublk_dev -t loop "${backing_file}")
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[ $? -ne 0 ] && return 1
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udevadm settle
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# Partitions should be auto-detected
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if [ ! -e /dev/ublkb"${dev_id}"p1 ] || [ ! -e /dev/ublkb"${dev_id}"p2 ]; then
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"${UBLK_PROG}" del -n "${dev_id}"
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return 1
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fi
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"${UBLK_PROG}" del -n "${dev_id}"
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return 0
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}
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test_no_auto_part_scan()
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{
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local backing_file=$1
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# Create device WITH --no_auto_part_scan
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local dev_id=$(_add_ublk_dev -t loop --no_auto_part_scan "${backing_file}")
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[ $? -ne 0 ] && return 1
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udevadm settle
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# Partitions should NOT be auto-detected
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if [ -e /dev/ublkb"${dev_id}"p1 ]; then
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"${UBLK_PROG}" del -n "${dev_id}"
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return 1
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fi
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# Manual scan should work
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blockdev --rereadpt /dev/ublkb"${dev_id}" > /dev/null 2>&1
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udevadm settle
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if [ ! -e /dev/ublkb"${dev_id}"p1 ] || [ ! -e /dev/ublkb"${dev_id}"p2 ]; then
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"${UBLK_PROG}" del -n "${dev_id}"
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return 1
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fi
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"${UBLK_PROG}" del -n "${dev_id}"
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return 0
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}
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if ! _have_program sfdisk || ! _have_program blockdev; then
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exit "$UBLK_SKIP_CODE"
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fi
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_prep_test "generic" "test UBLK_F_NO_AUTO_PART_SCAN"
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if ! _have_feature "UBLK_F_NO_AUTO_PART_SCAN"; then
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_cleanup_test "generic"
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exit "$UBLK_SKIP_CODE"
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fi
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# Create and format backing file with partition table
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_create_backfile 0 256M
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format_backing_file "${UBLK_BACKFILES[0]}"
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[ $? -ne 0 ] && ERR_CODE=255
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# Test normal auto partition scan
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[ "$ERR_CODE" -eq 0 ] && test_auto_part_scan "${UBLK_BACKFILES[0]}"
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[ $? -ne 0 ] && ERR_CODE=255
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# Test no auto partition scan with manual scan
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[ "$ERR_CODE" -eq 0 ] && test_no_auto_part_scan "${UBLK_BACKFILES[0]}"
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[ $? -ne 0 ] && ERR_CODE=255
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_cleanup_test "generic"
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_show_result $TID $ERR_CODE
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