{"id":701,"date":"2011-03-01T17:12:26","date_gmt":"2011-03-01T09:12:26","guid":{"rendered":"https:\/\/www.csslayer.tk\/wordpress\/?p=701"},"modified":"2011-04-14T05:57:50","modified_gmt":"2011-04-13T21:57:50","slug":"btrfs-try","status":"publish","type":"post","link":"https:\/\/www.csslayer.info\/wordpress\/linux\/btrfs-try\/","title":{"rendered":"\u4e0ebtrfs\u7684\u5c0f\u6597\u4e89"},"content":{"rendered":"

\u6700\u8fd1\u4e70\u4e86\u65b0\u7b14\u8bb0\u672c\uff0cgateway i43a06c\uff0c\u540c\u65f6\u4e5f\u60f3\u7528ssd\u723d\u4e00\u628a\uff0c\u4e8e\u662f\u4e5f\u4e70\u4e86kingston\u7684sv100s2\u3002\u5b89\u88c5ssd\u7684\u8fc7\u7a0b\u975e\u5e38\u987a\u5229\uff0c\u5185\u90e8\u7684\u8bbe\u8ba1\u7ed3\u6784\u4f7f\u5f97\u6362\u786c\u76d8\u975e\u5e38\u5bb9\u6613\u3002\u987a\u5229\u6362\u4e0bssd\u4e4b\u540e\uff0c\u5f53\u7136\u5c31\u662f\u5b89\u88c5\u4e00\u4e2aarchlinux\u6765\u7528\uff0c\u7528\u7684\u662farchboot 2010.12\u3002\u9009\u62e9\u7684\u6587\u4ef6\u7cfb\u7edf\u662fbtrfs\uff0c\u4e3b\u8981\u662f\u51fa\u4e8e\u5bf9ssd\u5bff\u547d\u7684\u8003\u8651\u3002\u867d\u7136\u73b0\u5728\u5404\u79cd\u8d1f\u9762\u7684\u65b0\u95fb\u8bf4btrfs\u7684\u6027\u80fd\u95ee\u9898\uff08benchmark\u8d25\u7ed9ext4\u7b49\uff09\uff0c\u4e0d\u8fc7\u76ee\u524d\u5728\u8fd9\u91ccssd\u56e0\u7d20\u4f3c\u4e4e\u6682\u65f6\u63a9\u76d6\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002\u4e3a\u4e86\u907f\u514d\u95ee\u9898\uff0c\u6211\u8fd8\u7528\u865a\u62df\u673a\u9884\u6f14\u4e86\u4e00\u6b21\uff0c\u81ea\u5e26\u7684grub2\u4e0d\u652f\u6301btrfs\uff0c\u4e8e\u662f\u5355\u72ec\u5206\u533a\u4e86boot\uff0cext2\u3002\u90a3\u4f1a\u8003\u8651\u5185\u5b58\u67092g\uff0c\u987a\u624b\u5206\u4e86500m\u7684swap\uff0c\u4ee5\u9632memory burst\u3002<\/p>\n

\u6700\u8fd1\u67e5\u4e86\u67e5\u8d44\u6599\uff0c\u56e0\u4e3a\u60f3\u7f16\u8bd1\u4e2akernel26-ck\u6765\u73a9\u7684\u7f18\u6545\uff0c\u4e8e\u662f\u7528\u4e86tmpfs\uff0c\u6ca1\u60f3\u5230\u7f16\u8bd1\u5185\u6838\u8fd8\u771f\u5360\u7a7a\u95f4\u2026\u4e8e\u662f\u5185\u5b58\u4e0d\u591f\u7528\u4e86\u2026\u4e5f\u5c31\u5bfc\u81f4\u4eca\u5929\u6211\u52a0\u4e862g\u7684\u5185\u5b58\u3002\u8fd9\u4e0b\u6211\u60f3\u628aswap\u5f7b\u5e95\u5e9f\u6389\uff0c\u987a\u4fbf\u770b\u770bbtrfs\u7684\u5728\u7ebfresize\u3002\u5f53\u7136\u6211\u60f3\u7684\u6709\u70b9\u7b80\u5355\u4e86\uff0c\u4e5f\u5c31\u5f15\u51fa\u4e86\u4e0b\u9762\u7684\u6545\u4e8b\u3002<\/p>\n

\u56e0\u4e3a\u5206\u533a\u5927\u5c0f\u662f\u4e0d\u80fd\u5728\u7ebf\u8c03\u6574\u7684\uff0c\u4e8e\u662f\u6211\u8fd8\u662f\u5148gparted\u5220\u6389\u4e86swap\uff0c\u4f46\u4f3c\u4e4e\u4fee\u6539\u5206\u533a\u8868\u4e4b\u540e\u5e94\u8be5grub-install\u4e0b\uff08\u6211\u4e5f\u4e0d\u662f\u592a\u6e05\u695a\uff0c\u5927\u6982\u662f\u8981\u7684\u5427\uff09\u3002\u4e8e\u662f\u91cd\u542f\u4e4b\u540e\u8fdb\u4e0d\u4e86grub\u4e86\uff0c\u6ca1\u6cd5\uff0c\u53ea\u597d\u638f\u51fa\u6211\u7684\u8001\u795e\u5668gparted\u7684livecd\uff0c\u7ed3\u679c\u53c8\u6211\u69fd\u4e86\uff0c\u5927\u6982\u662f\u4eba\u54c1\u4e0d\u597d\u5462\u8fd8\u662f\u5e74\u4e45\u5931\u4fee\u5462\uff0c\u603b\u4e4b\u6211\u7684livecd\u7684sector io error\u3002\u4e0d\u8fc7\u4e0a\u6b21\u5b89\u88c5\u7559\u4e0b\u7684archboot\u7684usb\u8fd8\u5728\uff08\u4e0d\u5728\u4e86\u6211\u4e5f\u80fd\u73b0\u505a\u4e00\u4e2a\uff09\uff0c\u53c8\u60f3\u5230\u8fd9\u8d27\u6709btrfs\u652f\u6301\uff08\u521a\u521a\u7528gparted\u7684\u601d\u60f3\u5176\u5b9e\u5b8c\u5168\u4e0d\u9760\u666e\uff0c\u56e0\u4e3a\u65e2\u6ca1\u6cd5\u8bfb\u53d6btrfs\uff0c\u4e5f\u6ca1\u6709grub2\uff09\u3002<\/p>\n

\u8fd9\u4e0b\u597d\u4e86\uff0cliveusb\u8fdb\u53bb\uff0c\u5148\u4fee\u6539\u5206\u533a\u5927\u5c0f\uff0c\u8fd9\u6539\u5206\u533a\u771f\u6709\u70b9\u63d0\u5fc3\u540a\u80c6\u3002\u56e0\u4e3a\u662ffdisk\u5148\u5220\u9664\u518d\u521b\u5efa\uff0c\u5206\u533astart\u7684\u8fb9\u7f18\u53ef\u4e0d\u80fd\u4e71\u52a8\uff0c\u8fd9\u5927\u6982\u9700\u8981\u6ce8\u610f\u3002\u7136\u540e\u5c31\u662fchroot\u8fdb\u53bb\uff0cmount\uff0c\u5b9e\u9645\u4e0a\u6211\u7528\u4e86chroot\u4e4b\u540e\u7684btrfs\u7684\u5de5\u5177\uff0c\u4e5f\u7b97\u662f\u5728\u7ebfresize\u4e86\u3002\u6709\u610f\u601d\u7684\u662f\uff0cbtrfs\u7684uuid\u6ca1\u6709\u4fee\u6539\uff08\u6211\u4ee5\u4e3a\u4f1a\u53d8\u5316\u7684\uff0c\u8fd8\u6539\u4e86\u4e0bfstab\uff09\uff0c\u7136\u540egrub-install\uff0c\u91cd\u542f\u3002\u8fdb\u7cfb\u7edf\uff0c\u5bf9\u6bd4\u5206\u533a\u5927\u5c0f\u4e4b\u540e\uff08\u56e0\u4e3a\u6211\u6ca1\u8bb0\u4f4f\u539f\u6765\u5206\u533a\u5927\u5c0f\u2026\u2026\uff09\uff0c\u5224\u65ad\u5e94\u8be5\u662fresize\u6210\u529f\u4e86\u3002\u7136\u540e\u5c31\u662f\u91cd\u65b0\u6539\u56de\u7528uuid\u7684grub\u548cfstab\u3002
\nbtrfs\u7684resize\u771f\u662f\u51fa\u4eba\u610f\u6599\u7684\u7b80\u5355\uff1a<\/p>\n

btrfs filesystem resize [delta size] [mount path]<\/pre>\n
\u540c\u65f6\u8fd8\u6709\u597d\u7528\u7684\u53c2\u6570max\uff0c\u5e2e\u4f60\u76f4\u63a5resize\u5230\u6700\u5927\u3002\u5927\u6982\u7ba1\u7406\u4e0a\u6765\u8bf4\uff0cbtrfs\u786e\u5b9e\u8981\u6bd4lvm\u548cext\u9ad8\u90a3\u4e48\u4e00\u7b79\u5427\u3002\u81f3\u4e8e\u6027\u80fd\u95ee\u9898\uff0c\u53ef\u4ee5\u6162\u6162\u6539\u8fdb\u3002\u6211\u5728\u4e00\u4e2abenchmark\u91cc\u9762\u660e\u663e\u7684\u770b\u5230btrfs\u6bcf\u6b21\u90fd\u8fd8\u5728\u6539\u8fdb\u5f53\u4e2d\u3002<\/p>\n
\u7531\u4e8ebtrfs\u88ab\u5ba3\u4f20\u7684\u6bd4\u8f83\u591a\uff0c\u53e6\u5916\u4e00\u4e2a\u4e5f\u6709ssd\u4f18\u5316\u7684nilfs2\u53cd\u800c\u5728\u6211\u5b89\u88c5\u4e4b\u524d\u8fd8\u2026\u2026\u6ca1\u80fd\u8033\u95fb\u2026\u2026\u603b\u4e4b\u90fd\u662funstable\u5566\u3002\u636e\u8bf4ssd\u6027\u80fd\u4e0d\u9519\uff0c\u4e0d\u8fc7\u65e2\u7136\u90fd\u5b89\u88c5\u597d\u4e86\uff0c\u6211\u5c31\u4e0d\u8fd9\u4e48\u51b2\u52a8\u518d\u5f53\u5c0f\u767d\u9f20\u4e86\u3002<\/p>\n
\u987a\u4fbf\u8bf4\u4e0b\u6211\u67e5\u5230\u7684<\/a>\u76f8\u5173\u4f18\u5316\uff1a<\/p>\n
    \n
  1. \u628afirefox cache\u6254tmpfs\uff08\u6bd5\u7adf\u9891\u7e41\u8bfb\u5199\uff0c\u5bf9\u975essd\u4e5f\u9002\u7528\uff09<\/li>\n
  2. io scheduler\u7528noop\u6216\u8005deadline\uff0c\u5efa\u8bae\u6765\u770b\u7528deadline\u3002fifo_batch\u6539\u6210\u4e861<\/li>\n
  3. fstab mount\u53c2\u6570\u52a0\u4e0a noatime\u3002\uff08ext\u7cfb\u4e5f\u6709\u6548\uff0catime\u7b97\u662flinux\u91cc\u9762\u4e00\u4e2a\u9700\u8981\u9891\u7e41\u7ef4\u62a4\u4f46\u662f\u5374\u6ca1\u4ec0\u4e48\u7528\u7684\u5c5e\u6027\uff0c\u4e5f\u80fd\u6709\u6548\u51cf\u5c11io\uff09\u3002<\/li>\n
  4. \u7136\u540e\u5c31\u662f\u628a\/tmp\u6254tmpfs\uff0c\u5c0f\u5fc3\u4e0d\u8981\u8ba9\u5b83\u66b4\u4e86\u54e6\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"
    \u6700\u8fd1\u4e70\u4e86\u65b0\u7b14\u8bb0\u672c\uff0cgateway i43a06c\uff0c\u540c\u65f6\u4e5f\u60f3\u7528ssd\u723d\u4e00\u628a\uff0c\u4e8e\u662f\u4e5f\u4e70\u4e86kingston\u7684sv100s2\u3002\u5b89\u88c5ssd\u7684\u8fc7\u7a0b\u975e\u5e38\u987a\u5229\uff0c\u5185\u90e8\u7684\u8bbe\u8ba1\u7ed3\u6784\u4f7f\u5f97\u6362\u786c\u76d8\u975e\u5e38\u5bb9\u6613\u3002\u987a\u5229\u6362\u4e0bssd\u4e4b\u540e\uff0c\u5f53\u7136\u5c31\u662f\u5b89\u88c5\u4e00\u4e2aarchlinux\u6765\u7528\uff0c\u7528\u7684\u662farchboot 2010.12\u3002\u9009\u62e9\u7684\u6587\u4ef6\u7cfb\u7edf\u662fbtrfs\uff0c\u4e3b\u8981\u662f\u51fa\u4e8e\u5bf9ssd\u5bff\u547d\u7684\u8003\u8651\u3002\u867d\u7136\u73b0\u5728\u5404\u79cd\u8d1f\u9762\u7684\u65b0\u95fb\u8bf4btrfs\u7684\u6027\u80fd\u95ee\u9898\uff08benchmark\u8d25\u7ed9ext4\u7b49\uff09\uff0c\u4e0d\u8fc7\u76ee\u524d\u5728\u8fd9\u91ccssd\u56e0\u7d20\u4f3c\u4e4e\u6682\u65f6\u63a9\u76d6\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002\u4e3a\u4e86\u907f\u514d\u95ee\u9898\uff0c\u6211\u8fd8\u7528\u865a\u62df\u673a\u9884\u6f14\u4e86\u4e00\u6b21\uff0c\u81ea\u5e26\u7684grub2\u4e0d\u652f\u6301btrfs\uff0c\u4e8e\u662f\u5355\u72ec\u5206\u533a\u4e86boot\uff0cext2\u3002\u90a3\u4f1a\u8003\u8651\u5185\u5b58\u67092g\uff0c\u987a\u624b\u5206\u4e86500m\u7684swap\uff0c\u4ee5\u9632memory burst\u3002 \u6700\u8fd1\u67e5\u4e86\u67e5\u8d44\u6599\uff0c\u56e0\u4e3a\u60f3\u7f16\u8bd1\u4e2akernel26-ck\u6765\u73a9\u7684\u7f18\u6545\uff0c\u4e8e\u662f\u7528\u4e86tmpfs\uff0c\u6ca1\u60f3\u5230\u7f16\u8bd1\u5185\u6838\u8fd8\u771f\u5360\u7a7a\u95f4\u2026\u4e8e\u662f\u5185\u5b58\u4e0d\u591f\u7528\u4e86\u2026\u4e5f\u5c31\u5bfc\u81f4\u4eca\u5929\u6211\u52a0\u4e862g\u7684\u5185\u5b58\u3002\u8fd9\u4e0b\u6211\u60f3\u628aswap\u5f7b\u5e95\u5e9f\u6389\uff0c\u987a\u4fbf\u770b\u770bbtrfs\u7684\u5728\u7ebfresize\u3002\u5f53\u7136\u6211\u60f3\u7684\u6709\u70b9\u7b80\u5355\u4e86\uff0c\u4e5f\u5c31\u5f15\u51fa\u4e86\u4e0b\u9762\u7684\u6545\u4e8b\u3002 \u56e0\u4e3a\u5206\u533a\u5927\u5c0f\u662f\u4e0d\u80fd\u5728\u7ebf\u8c03\u6574\u7684\uff0c\u4e8e\u662f\u6211\u8fd8\u662f\u5148gparted\u5220\u6389\u4e86swap\uff0c\u4f46\u4f3c\u4e4e\u4fee\u6539\u5206\u533a\u8868\u4e4b\u540e\u5e94\u8be5grub-install\u4e0b\uff08\u6211\u4e5f\u4e0d\u662f\u592a\u6e05\u695a\uff0c\u5927\u6982\u662f\u8981\u7684\u5427\uff09\u3002\u4e8e\u662f\u91cd\u542f\u4e4b\u540e\u8fdb\u4e0d\u4e86grub\u4e86\uff0c\u6ca1\u6cd5\uff0c\u53ea\u597d\u638f\u51fa\u6211\u7684\u8001\u795e\u5668gparted\u7684livecd\uff0c\u7ed3\u679c\u53c8\u6211\u69fd\u4e86\uff0c\u5927\u6982\u662f\u4eba\u54c1\u4e0d\u597d\u5462\u8fd8\u662f\u5e74\u4e45\u5931\u4fee\u5462\uff0c\u603b\u4e4b\u6211\u7684livecd\u7684sector io error\u3002\u4e0d\u8fc7\u4e0a\u6b21\u5b89\u88c5\u7559\u4e0b\u7684archboot\u7684usb\u8fd8\u5728\uff08\u4e0d\u5728\u4e86\u6211\u4e5f\u80fd\u73b0\u505a\u4e00\u4e2a\uff09\uff0c\u53c8\u60f3\u5230\u8fd9\u8d27\u6709btrfs\u652f\u6301\uff08\u521a\u521a\u7528gparted\u7684\u601d\u60f3\u5176\u5b9e\u5b8c\u5168\u4e0d\u9760\u666e\uff0c\u56e0\u4e3a\u65e2\u6ca1\u6cd5\u8bfb\u53d6btrfs\uff0c\u4e5f\u6ca1\u6709grub2\uff09\u3002 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