pg /c database 通过。似乎是pg使用 open/write 写入了某个文件，通过 fopen/fscanf 绕过了hook路径导致的。出现了新的段错误。
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@@ -15,10 +15,14 @@ dynamic_shared_memory_type = sysv
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# 4. 重启 PostgreSQL
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## 清理旧空间
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sudo systemctl stop postgresql
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pkill -9 -u postgres postgres || true
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rm -rf /home/lian/pg/pgdata
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rm -rf /zvfs/pg_ts_bench
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rm -rf /tmp/pg.log
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## 初始化
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sudo chown -R postgres:postgres /home/lian/pg
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sudo -u postgres mkdir -p /home/lian/pg/pgdata
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sudo chown -R postgres:postgres /home/lian/pg/pgdata
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@@ -26,36 +30,42 @@ sudo chown -R postgres:postgres /home/lian/pg/pgdata
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sudo -u postgres env LD_PRELOAD=/home/lian/try/zvfs/src/libzvfs.so \
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/usr/lib/postgresql/12/bin/initdb -D /home/lian/pg/pgdata
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## 修改配置文件
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cp ./postgresql.conf /home/lian/pg/pgdata/
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sudo chown -R postgres:postgres /home/lian/pg/pgdata/postgresql.conf
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sudo -u postgres env LD_PRELOAD=/home/lian/try/zvfs/src/libzvfs.so \
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/usr/lib/postgresql/12/bin/pg_ctl -D /home/lian/pg/pgdata -l /tmp/pg.log start
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sudo -u postgres env LD_PRELOAD=/home/lian/try/zvfs/src/libzvfs.so \
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/usr/lib/postgresql/12/bin/psql
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sudo -u postgres env LD_PRELOAD=/home/lian/try/zvfs/src/libzvfs.so \
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/usr/lib/postgresql/12/bin/pg_ctl -D /home/lian/pg/pgdata -l /tmp/pg.log restart
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# 创建测试环境
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## 创建测试环境
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sudo -u postgres mkdir -p /zvfs/pg_ts_bench
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sudo chown -R postgres:postgres /zvfs/pg_ts_bench
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sudo chmod 700 /zvfs/pg_ts_bench
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CREATE TABLESPACE zvfs_ts LOCATION '/zvfs/pg_ts_bench';
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DROP DATABASE IF EXISTS benchdb;
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CREATE DATABASE benchdb TABLESPACE zvfs_ts;
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DROP TABLE IF EXISTS hook_probe;
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CREATE TABLE hook_probe(id int) TABLESPACE zvfs_ts;
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INSERT INTO hook_probe VALUES (1);
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INSERT INTO hook_probe VALUES (2);
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INSERT INTO hook_probe VALUES (3);
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INSERT INTO hook_probe VALUES (4);
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SELECT * FROM hook_probe;
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DELETE FROM hook_probe WHERE id = 1;
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UPDATE hook_probe SET id = 11 WHERE id = 2;
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SELECT * FROM hook_probe;
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## 启动服务
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sudo -u postgres env LD_PRELOAD=/home/lian/try/zvfs/src/libzvfs.so \
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/usr/lib/postgresql/12/bin/pg_ctl -D /home/lian/pg/pgdata -l /tmp/pg.log start
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sudo -u postgres env \
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LD_PRELOAD=/home/lian/try/zvfs/src/libzvfs.so \
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ZVFS_DEBUG_OPEN=1 \
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ZVFS_DEBUG_OPEN_MATCH=PG_VERSION \
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ZVFS_DEBUG_RW=1 \
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/usr/lib/postgresql/12/bin/pg_ctl -D /home/lian/pg/pgdata -l /tmp/pg.log start
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## 打开命令行工具
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sudo -u postgres env LD_PRELOAD=/home/lian/try/zvfs/src/libzvfs.so \
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/usr/lib/postgresql/12/bin/psql
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sudo -u postgres env LD_PRELOAD=/home/lian/try/zvfs/src/libzvfs.so \
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ZVFS_DEBUG_OPEN=1 \
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ZVFS_DEBUG_OPEN_MATCH=PG_VERSION \
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ZVFS_DEBUG_RW=1 \
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/usr/lib/postgresql/12/bin/psql
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## 重启服务
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sudo -u postgres env LD_PRELOAD=/home/lian/try/zvfs/src/libzvfs.so \
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/usr/lib/postgresql/12/bin/pg_ctl -D /home/lian/pg/pgdata -l /tmp/pg.log restart
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# 5. 验证配置生效
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@@ -63,15 +73,76 @@ pid=$(pgrep -u postgres -xo postgres)
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echo "pid=$pid"
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sudo grep libzvfs /proc/$pid/maps
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sudo -u postgres psql -p 5432 -c "show data_directory;"
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sudo -u postgres psql -c "SHOW shared_memory_type;"
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sudo -u postgres psql -c "SHOW dynamic_shared_memory_type;"
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show data_directory;
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SHOW shared_memory_type;
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SHOW dynamic_shared_memory_type;
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```
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# 6. 创建测试库（如未创建）
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## 简易功能测试
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```shell
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# 1. 创建 tablespace
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DROP TABLESPACE IF EXISTS zvfs_ts;
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CREATE TABLESPACE zvfs_ts LOCATION '/zvfs/pg_ts_bench';
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sudo -u postgres createdb benchdb
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# 2. 创建数据库
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DROP DATABASE IF EXISTS benchdb;
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CREATE DATABASE benchdb TABLESPACE zvfs_ts;
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# 7. 运行你的 bench 脚本
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## 3. 连接数据库
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\c benchdb
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# -- 查看数据库默认 tablespace
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SHOW default_tablespace;
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# 4. 创建表（默认 tablespace）
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DROP TABLE IF EXISTS hook_probe;
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CREATE TABLE hook_probe(
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id int,
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val text
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);
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INSERT INTO hook_probe VALUES (1,'a');
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INSERT INTO hook_probe VALUES (2,'b');
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INSERT INTO hook_probe VALUES (3,'c');
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INSERT INTO hook_probe VALUES (4,'d');
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SELECT * FROM hook_probe;
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# 5. UPDATE / DELETE 测试
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DELETE FROM hook_probe WHERE id = 1;
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UPDATE hook_probe SET id = 11 WHERE id = 2;
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SELECT * FROM hook_probe;
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# 6. 批量 INSERT 测试
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INSERT INTO hook_probe
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SELECT generate_series(100,10000), 'bulk';
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SELECT count(*) FROM hook_probe;
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# 7. 创建索引（测试 index file）
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CREATE INDEX idx_hook_probe_id ON hook_probe(id);
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# 8. 大对象测试（TOAST）
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INSERT INTO hook_probe VALUES (99999, repeat('zvfs_test_',1000));
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# 9. VACUUM 测试
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VACUUM hook_probe;
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# 10. ANALYZE
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ANALYZE hook_probe;
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# 11. 查看物理文件位置
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SELECT
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relname,
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pg_relation_filepath(oid)
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FROM pg_class
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WHERE relname='hook_probe';
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# 12. 删表
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DROP TABLE IF EXISTS hook_probe;
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# 13. 压测
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bash /home/lian/try/zvfs/scripts/run_pgbench_no_mmap.sh
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```
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