{"id":51229,"date":"2024-12-03T14:09:55","date_gmt":"2024-12-03T06:09:55","guid":{"rendered":"https:\/\/fwq.ai\/blog\/51229\/"},"modified":"2024-12-03T14:09:55","modified_gmt":"2024-12-03T06:09:55","slug":"%e5%a6%82%e4%bd%95%e4%bc%98%e5%8c%96linux%e7%b3%bb%e7%bb%9f%e7%9a%84%e6%96%87%e4%bb%b6i-o%e6%80%a7%e8%83%bd%e5%92%8c%e5%ad%98%e5%82%a8%e6%80%a7%e8%83%bd-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/51229\/","title":{"rendered":"\u5982\u4f55\u4f18\u5316Linux\u7cfb\u7edf\u7684\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u5982\u4f55\u4f18\u5316Linux\u7cfb\u7edf\u7684\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd<\/h1>\n<p>\u4f60\u5728\u5b66\u4e60\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\">\u300a\u5982\u4f55\u4f18\u5316Linux\u7cfb\u7edf\u7684\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd\u300b<\/span>\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230<span style=\"color: #FF6600;, Helvetica, Arial, sans-serif;font-size: 14px;background-color: #FFFFFF\"><\/span>\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01<\/p>\n<p>\u5982\u4f55\u4f18\u5316Linux\u7cfb\u7edf\u7684\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd\uff0c\u9700\u8981\u5177\u4f53\u4ee3\u7801\u793a\u4f8b<\/p>\n<p>\u5f15\u8a00\uff1a<br \/>\u5728\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u6587\u4ef6I\/O\u548c\u5b58\u50a8\u64cd\u4f5c\u65f6\uff0c\u4f18\u5316\u7cfb\u7edf\u7684\u6027\u80fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u901a\u8fc7\u63d0\u9ad8\u6587\u4ef6I\/O\u7684\u901f\u5ea6\u548c\u5b58\u50a8\u7684\u6548\u7387\uff0c\u53ef\u4ee5\u52a0\u5feb\u7cfb\u7edf\u7684\u54cd\u5e94\u901f\u5ea6\u548c\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u4f18\u5316Linux\u7cfb\u7edf\u6587\u4ef6I\/O\u548c\u5b58\u50a8\u6027\u80fd\u7684\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>\u4e00\u3001\u4f7f\u7528\u5408\u9002\u7684\u6587\u4ef6\u7cfb\u7edf<br \/>\u6587\u4ef6\u7cfb\u7edf\u662f\u5b58\u50a8\u6570\u636e\u7684\u7ec4\u7ec7\u65b9\u5f0f\uff0c\u9009\u62e9\u5408\u9002\u7684\u6587\u4ef6\u7cfb\u7edf\u53ef\u4ee5\u63d0\u9ad8\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u5e38\u7528\u7684\u6587\u4ef6\u7cfb\u7edf\u6709EXT4\u3001XFS\u3001Btrfs\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528XFS\u6587\u4ef6\u7cfb\u7edf\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># \u5b89\u88c5XFS\u6587\u4ef6\u7cfb\u7edf\u652f\u6301\nsudo apt-get install -y xfsprogs\n\n# \u521b\u5efaXFS\u6587\u4ef6\u7cfb\u7edf\nsudo mkfs.xfs \/dev\/sdb1\n\n# \u6302\u8f7dXFS\u6587\u4ef6\u7cfb\u7edf\nsudo mount -t xfs \/dev\/sdb1 \/mnt\/data<\/pre>\n<p>\u4e8c\u3001\u4f7f\u7528\u9002\u5f53\u7684\u8bfb\u5199\u65b9\u5f0f<br \/>\u5728\u8fdb\u884c\u6587\u4ef6I\/O\u64cd\u4f5c\u65f6\uff0c\u9009\u62e9\u9002\u5f53\u7684\u8bfb\u5199\u65b9\u5f0f\u4e5f\u662f\u4f18\u5316\u6027\u80fd\u7684\u91cd\u8981\u6b65\u9aa4\u3002\u4f8b\u5982\uff0c\u91c7\u7528\u4f7f\u7528\u7f13\u51b2\u533a\u7684\u65b9\u6cd5\u53ef\u4ee5\u51cf\u5c11\u78c1\u76d8I\/O\u7684\u6b21\u6570\uff0c\u63d0\u9ad8\u8bfb\u5199\u6548\u7387\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u7f13\u51b2\u533a\u8bfb\u5199\u6587\u4ef6\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>#include &lt;stdio.h&gt;\n\nint main() {\n    FILE *fp;\n    char buffer[1024];\n\n    fp = fopen(\"data.txt\", \"rb\");\n    if (fp == NULL) {\n        printf(\"\u65e0\u6cd5\u6253\u5f00\u6587\u4ef6\uff01\");\n        return 1;\n    }\n\n    fread(buffer, sizeof(char), sizeof(buffer), fp);\n\n    \/\/ \u8fdb\u884c\u5404\u79cd\u64cd\u4f5c\n\n    fclose(fp);\n\n    return 0;\n}<\/pre>\n<p>\u4e09\u3001\u4f7f\u7528\u5f02\u6b65I\/O<br \/>\u5f02\u6b65I\/O\u662f\u4e00\u79cd\u53ef\u63d0\u9ad8\u6587\u4ef6I\/O\u6027\u80fd\u7684\u65b9\u6cd5\uff0c\u5b83\u5141\u8bb8\u5e94\u7528\u7a0b\u5e8f\u5728\u8fdb\u884c\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c\u7684\u540c\u65f6\u6267\u884c\u5176\u4ed6\u4efb\u52a1\u3002\u4f7f\u7528\u5f02\u6b65I\/O\u53ef\u4ee5\u51cf\u5c11\u963b\u585e\u7b49\u5f85\u65f6\u95f4\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u5e76\u53d1\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u5f02\u6b65I\/O\u8bfb\u5199\u6587\u4ef6\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>#include &lt;stdio.h&gt;\n#include &lt;aio.h&gt;\n\nint main() {\n    int fd;\n    char buffer[1024];\n    struct aiocb aio;\n\n    fd = open(\"data.txt\", O_RDONLY);\n    if (fd &lt; 0) {\n        printf(\"\u65e0\u6cd5\u6253\u5f00\u6587\u4ef6\uff01\");\n        return 1;\n    }\n\n    aio.aio_fildes = fd;\n    aio.aio_buf = buffer;\n    aio.aio_nbytes = sizeof(buffer);\n    aio.aio_offset = 0;\n\n    aio_read(&amp;aio);\n\n    \/\/ \u8fdb\u884c\u5404\u79cd\u64cd\u4f5c\n\n    aio_suspend(&amp;aio, 1, NULL);\n\n    close(fd);\n\n    return 0;\n}<\/pre>\n<p>\u56db\u3001\u4f7f\u7528\u9ad8\u6548\u7684\u5b58\u50a8\u8bbe\u5907<br \/>\u4f7f\u7528\u9ad8\u6548\u7684\u5b58\u50a8\u8bbe\u5907\u4e5f\u80fd\u591f\u5f88\u5927\u7a0b\u5ea6\u4e0a\u63d0\u5347\u7cfb\u7edf\u7684\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u56fa\u6001\u786c\u76d8\uff08SSD\uff09\u4ee3\u66ff\u4f20\u7edf\u7684\u673a\u68b0\u786c\u76d8\u53ef\u4ee5\u5927\u5e45\u63d0\u9ad8\u8bfb\u5199\u901f\u5ea6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528SSD\u5b58\u50a8\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>#include &lt;stdio.h&gt;\n\nint main() {\n    FILE *fp;\n    char buffer[1024];\n\n    fp = fopen(\"\/dev\/nvme0n1\", \"rb\");\n    if (fp == NULL) {\n        printf(\"\u65e0\u6cd5\u6253\u5f00\u8bbe\u5907\uff01\");\n        return 1;\n    }\n\n    fread(buffer, sizeof(char), sizeof(buffer), fp);\n\n    \/\/ \u8fdb\u884c\u5404\u79cd\u64cd\u4f5c\n\n    fclose(fp);\n\n    return 0;\n}<\/pre>\n<p>\u4e94\u3001\u4f7f\u7528\u9ad8\u7ea7\u5b58\u50a8\u6280\u672f<br \/>\u9664\u4e86\u9009\u62e9\u9ad8\u6548\u7684\u8bbe\u5907\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u9ad8\u7ea7\u5b58\u50a8\u6280\u672f\u6765\u8fdb\u4e00\u6b65\u63d0\u5347\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u4f7f\u7528RAID\uff08Redundant Array of Independent Disks\uff09\u53ef\u4ee5\u63d0\u9ad8\u78c1\u76d8\u7684\u5bb9\u9519\u6027\u548c\u6027\u80fd\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528RAID 0\u548cRAID 5\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># \u521b\u5efaRAID 0\nsudo mdadm --create \/dev\/md0 --level=0 --raid-devices=2 \/dev\/sdb1 \/dev\/sdc1\n\n# \u521b\u5efaRAID 5\nsudo mdadm --create --verbose \/dev\/md0 --level=5 --raid-devices=3 \/dev\/sdb1 \/dev\/sdc1 \/dev\/sdd1<\/pre>\n<p>\u7ed3\u8bba\uff1a<br \/>\u901a\u8fc7\u9009\u62e9\u5408\u9002\u7684\u6587\u4ef6\u7cfb\u7edf\u3001\u4f7f\u7528\u5408\u9002\u7684\u8bfb\u5199\u65b9\u5f0f\u3001\u4f7f\u7528\u5f02\u6b65I\/O\u3001\u4f7f\u7528\u9ad8\u6548\u7684\u5b58\u50a8\u8bbe\u5907\u548c\u4f7f\u7528\u9ad8\u7ea7\u5b58\u50a8\u6280\u672f\uff0c\u53ef\u4ee5\u4f18\u5316Linux\u7cfb\u7edf\u7684\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd\uff0c\u63d0\u9ad8\u7cfb\u7edf\u7684\u54cd\u5e94\u901f\u5ea6\u548c\u7528\u6237\u4f53\u9a8c\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u4f18\u5316\u65b9\u6cd5\uff0c\u5e76\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u8c03\u6574\u53c2\u6570\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u63d0\u5347\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   \u5982\u4f55\u5728Vue\u4e2d\u5b9e\u73b0\u591a\u9009\u4e0b\u62c9\u6846\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f18\u5316Linux\u7cfb\u7edf\u7684\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd \u4f60\u5728\u5b66\u4e60\u76f8\u5173\u7684\u77e5\u8bc6\u5417\uff1f\u672c\u6587\u300a\u5982\u4f55\u4f18\u5316Linux\u7cfb\u7edf\u7684\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u7684\u5185\u5bb9\u5c31\u6d89\u53ca\u5230\uff0c\u5982\u679c\u4f60\u60f3\u63d0\u5347\u81ea\u5df1\u7684\u5f00\u53d1\u80fd\u529b\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u8fd9\u7bc7\u6587\u7ae0\uff0c\u5927\u5bb6\u8981\u77e5\u9053\u7f16\u7a0b\u7406\u8bba\u57fa\u7840\u548c\u5b9e\u6218\u64cd\u4f5c\u90fd\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u54e6\uff01 \u5982\u4f55\u4f18\u5316Linux\u7cfb\u7edf\u7684\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd\uff0c\u9700\u8981\u5177\u4f53\u4ee3\u7801\u793a\u4f8b \u5f15\u8a00\uff1a\u5728\u8fdb\u884cLinux\u7cfb\u7edf\u7684\u6587\u4ef6I\/O\u548c\u5b58\u50a8\u64cd\u4f5c\u65f6\uff0c\u4f18\u5316\u7cfb\u7edf\u7684\u6027\u80fd\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u901a\u8fc7\u63d0\u9ad8\u6587\u4ef6I\/O\u7684\u901f\u5ea6\u548c\u5b58\u50a8\u7684\u6548\u7387\uff0c\u53ef\u4ee5\u52a0\u5feb\u7cfb\u7edf\u7684\u54cd\u5e94\u901f\u5ea6\u548c\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u4f18\u5316Linux\u7cfb\u7edf\u6587\u4ef6I\/O\u548c\u5b58\u50a8\u6027\u80fd\u7684\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002 \u4e00\u3001\u4f7f\u7528\u5408\u9002\u7684\u6587\u4ef6\u7cfb\u7edf\u6587\u4ef6\u7cfb\u7edf\u662f\u5b58\u50a8\u6570\u636e\u7684\u7ec4\u7ec7\u65b9\u5f0f\uff0c\u9009\u62e9\u5408\u9002\u7684\u6587\u4ef6\u7cfb\u7edf\u53ef\u4ee5\u63d0\u9ad8\u6587\u4ef6I\/O\u6027\u80fd\u548c\u5b58\u50a8\u6027\u80fd\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u5e38\u7528\u7684\u6587\u4ef6\u7cfb\u7edf\u6709EXT4\u3001XFS\u3001Btrfs\u7b49\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528XFS\u6587\u4ef6\u7cfb\u7edf\u7684\u793a\u4f8b\u4ee3\u7801\uff1a # \u5b89\u88c5XFS\u6587\u4ef6\u7cfb\u7edf\u652f\u6301 sudo apt-get install -y xfsprogs # \u521b\u5efaXFS\u6587\u4ef6\u7cfb\u7edf sudo mkfs.xfs \/dev\/sdb1 # \u6302\u8f7dXFS\u6587\u4ef6\u7cfb\u7edf sudo mount -t xfs \/dev\/sdb1 \/mnt\/data \u4e8c\u3001\u4f7f\u7528\u9002\u5f53\u7684\u8bfb\u5199\u65b9\u5f0f\u5728\u8fdb\u884c\u6587\u4ef6I\/O\u64cd\u4f5c\u65f6\uff0c\u9009\u62e9\u9002\u5f53\u7684\u8bfb\u5199\u65b9\u5f0f\u4e5f\u662f\u4f18\u5316\u6027\u80fd\u7684\u91cd\u8981\u6b65\u9aa4\u3002\u4f8b\u5982\uff0c\u91c7\u7528\u4f7f\u7528\u7f13\u51b2\u533a\u7684\u65b9\u6cd5\u53ef\u4ee5\u51cf\u5c11\u78c1\u76d8I\/O\u7684\u6b21\u6570\uff0c\u63d0\u9ad8\u8bfb\u5199\u6548\u7387\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u7f13\u51b2\u533a\u8bfb\u5199\u6587\u4ef6\u7684\u793a\u4f8b\u4ee3\u7801\uff1a #include &lt;stdio.h&gt; int main() { FILE *fp; char buffer[1024]; fp = fopen(&#8220;data.txt&#8221;, &#8220;rb&#8221;); if (fp == NULL) { printf(&#8220;\u65e0\u6cd5\u6253\u5f00\u6587\u4ef6\uff01&#8221;); return 1; } fread(buffer, sizeof(char), sizeof(buffer), fp); \/\/ \u8fdb\u884c\u5404\u79cd\u64cd\u4f5c fclose(fp); 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