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d507d3cb19
Batch AUTO_BUF_REG COMMIT must unregister the old auto_buf index before storing the next one. Fixed per-tag indexing (A == B) masks bugs that clear after overwriting io->buf. Add kublk --rotate_auto_buf so each tag alternates between two sparse buffer indices, and test_batch_04.sh to exercise that path. Without the driver fix, the request ref stays stuck and I/O hangs; the test uses a short timeout and kills the ublk daemon to recover. With the fix, a small write completes quickly. Signed-off-by: Yang Xiuwei <yangxiuwei@kylinos.cn> Reviewed-by: Ming Lei <tom.leiming@gmail.com> Link: https://patch.msgid.link/20260730024050.1062354-1-yangxiuwei@kylinos.cn Signed-off-by: Jens Axboe <axboe@kernel.dk>
45 lines
1.1 KiB
Bash
Executable File
45 lines
1.1 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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#
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# --rotate_auto_buf: COMMIT must unregister old auto_buf index before store.
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. "$(cd "$(dirname "$0")" && pwd)"/test_common.sh
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ERR_CODE=0
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if ! _have_feature "BATCH_IO" || ! _have_feature "AUTO_BUF_REG"; then
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exit "$UBLK_SKIP_CODE"
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fi
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if ! _have_program fio || ! _have_program timeout; then
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exit "$UBLK_SKIP_CODE"
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fi
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_prep_test "generic" "batch auto_buf unregister with rotating index"
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_create_backfile 0 64M
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dev_id=$(_add_ublk_dev_no_settle -t loop -q 1 --nthreads 1 -b --auto_zc \
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--rotate_auto_buf "${UBLK_BACKFILES[0]}")
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_check_add_dev $TID $?
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for ((i = 0; i < 50; i++)); do
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[ -b /dev/ublkb"${dev_id}" ] && break
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sleep 0.1
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done
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[ -b /dev/ublkb"${dev_id}" ] || { _cleanup_test; _show_result $TID 1; }
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timeout -k 2 5 fio --name=job1 --filename=/dev/ublkb"${dev_id}" \
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--ioengine=libaio --rw=write --direct=1 --bs=4k --iodepth=1 --size=64k \
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> /dev/null 2>&1
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ERR_CODE=$?
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if [ "$ERR_CODE" -ne 0 ]; then
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kill -9 "$(_get_ublk_daemon_pid "$dev_id" 2>/dev/null)" 2>/dev/null || true
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sleep 0.5
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pkill -9 fio 2>/dev/null || true
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ERR_CODE=1
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fi
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_cleanup_test
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_show_result $TID $ERR_CODE
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