{"id":199,"date":"2016-03-03T17:09:08","date_gmt":"2016-03-03T09:09:08","guid":{"rendered":"http:\/\/www.2cloud.com\/blog\/?p=199"},"modified":"2016-03-03T17:09:08","modified_gmt":"2016-03-03T09:09:08","slug":"199","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/199.html","title":{"rendered":"\u57fa\u4e8eCeph RBD\u7684\u5feb\u7167\u6280\u672f\u5b9e\u73b0\u5f02\u5730\u707e\u5907"},"content":{"rendered":"<p>\t\t\t\t<![CDATA[\u6587\u7ae0\u4f5c\u8005\uff1a\u5b8b\u8d1e\uff0c\u4e91\u6749\u7f51\u7edc\u9ad8\u7ea7\u7814\u53d1\u5de5\u7a0b\u5e08\n\n\n<h3><strong>\u57fa\u672c\u672f\u8bed<\/strong><\/h3>\n\n\n\u955c\u50cf Image\uff1a\u5bf9\u5e94\u4e8e\u903b\u8f91\u5377Logical Volume\uff0c\u662f\u80fd\u88abattach\u548cdetach\u5230\u865a\u62df\u673a\u7684\u8f7d\u4f53\u3002\n\u5feb\u7167 Snapshot\uff1aImage\u5728\u67d0\u4e00\u4e2a\u65f6\u523b\u7684\u72b6\u6001\uff0c\u53ef\u4ee5\u5c06Image\u56de\u6eda\u5230\u67d0\u4e00\u4e2a\u5feb\u7167\u72b6\u6001\u3002\n\n\n<h3><strong>Ceph\u5904\u7406\u5dee\u91cf\u6587\u4ef6<\/strong><\/h3>\n\n\nCeph\u53ef\u4ee5\u5c06\u67d0\u4e2aRBD image\u4e0d\u540c\u65f6\u523b\u7684\u72b6\u6001\u8fdb\u884c\u6bd4\u8f83\uff0c\u5c06\u5176\u5dee\u91cf\u5bfc\u51fa\u6210\u6587\u4ef6\uff0c\u540c\u65f6\u4e5f\u53ef\u4ee5\u5c06\u8fd9\u4e2a\u5dee\u91cf\u6587\u4ef6\u5bfc\u5165\u5230\u67d0\u4e2aimage\u4e2d\u3002\n\n\n<p style=\"padding-left: 30px;\"><strong>Ceph\u751f\u6210\u5dee\u91cf\u6587\u4ef6\u7684\u4e09\u79cd\u65b9\u5f0f<\/strong><\/p>\n\n\n\n\n<p style=\"padding-left: 30px;\">1\uff09\u5bfc\u51fa\u67d0\u4e2aimage\u4ece\u521b\u5efa\u5230\u6b64\u523b\u7684\u53d8\u5316\n\u4f8b\u5982\uff0c\u5c06pool\/image1\u4ece\u521b\u5efa\u5230\u6b64\u523b\u7684\u5dee\u91cf\u4fdd\u5b58\u81f3image1diff\u6587\u4ef6<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd export-diff pool\/image1 image1diff<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">2\uff09\u5bfc\u51fa\u67d0\u4e2aimage\u4ece\u521b\u5efa\u5230\u67d0\u5feb\u7167\u65f6\u523b\u7684\u53d8\u5316\n\u4f8b\u5982\uff0c\u5c06pool\/image1\u521b\u5efa\u65f6\u548c\u5feb\u7167snap1\u7684\u5dee\u91cf\u4fdd\u5b58\u81f3image1s1diff\u6587\u4ef6<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd export-diff pool\/image1@snap1 image1s1diff<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">3\uff09\u5bfc\u51fa\u67d0\u4e2aimage\u6b64\u523b\u548c\u67d0\u5feb\u7167\u65f6\u523b\u7684\u53d8\u5316\n\u4f8b\u5982\uff0c\u5c06\u73b0\u5728pool\/image1\u548c\u5feb\u7167snap1\u7684\u5dee\u91cf\u4fdd\u5b58\u81f3image1s1diff2\u6587\u4ef6<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd export-diff pool\/image1 \u2013from-snap snap1 image1s1diff2<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\"><strong>Ceph\u5bfc\u5165\u5dee\u91cf\u6587\u4ef6\u7684\u4e09\u79cd\u65b9\u5f0f<\/strong>\n\u5bf9\u5e94\u751f\u6210\u5dee\u91cf\u6587\u4ef6\u7684\u4e09\u79cd\u65b9\u5f0f\uff0c\u6709\u4e09\u79cd\u5bfc\u5165\u5dee\u91cf\u6587\u4ef6\u7684\u65b9\u5f0f\u3002\u5bfc\u5165\u7684\u524d\u63d0\u662f\u5148\u521b\u5efa\u4e00\u4e2aimage2\uff0c\u7136\u540e\u5c06diff\u6587\u4ef6\u5bfc\u5165\u8fd9\u4e2aimage\u3002<\/p>\n\n\n\n\n<p style=\"padding-left: 30px;\">1\uff09\u5bfc\u5165image\u4ece\u521b\u5efa\u5230\u67d0\u4e00\u65f6\u523b\u7684diff<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd import-diff image1diff pool\/image2<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">\u6b64\u65f6\uff0cimage2\u548c\u751f\u6210diff\u65f6image1\u76f8\u540c<\/p>\n\n\n\n\n<p style=\"padding-left: 30px;\">2\uff09\u5bfc\u5165image\u4ece\u521b\u5efa\u65f6\u5230\u67d0\u5feb\u7167\u65f6\u523b\u7684diff<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd import-diff image1s1diff pool\/image2<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">\u6b64\u65f6\uff0cimage2\u548c\u521b\u5efasnap1\u540e\u7684image1\u76f8\u540c\uff0c\u5373image2\u4e5f\u6709\u4e00\u4e2a\u53eb\u505asnap1\u7684\u5feb\u7167<\/p>\n\n\n\n\n<p style=\"padding-left: 30px;\">3\uff09\u5bfc\u5165image\u4ece\u67d0\u5feb\u7167\u65f6\u523b\u5230\u67d0\u65f6\u523b\u7684diff<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd import-diff image1s1diff2 pool\/image2<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">\u6267\u884c\u7684\u524d\u63d0\u662fimage2\u6709\u4e00\u4e2a\u53eb\u505asnap1\u7684\u5feb\u7167<\/p>\n\n\n\n\n\n<h3>\u5f02\u5730\u707e\u5907\u7684\u5b9e\u73b0<\/h3>\n\n\n\u7531\u4e8e\u7b2c\u4e00\u6b21\u5907\u4efd\u65f6\uff0c\u707e\u5907\u6570\u636e\u4e2d\u5fc3\u8fd8\u6ca1\u6709\u5bf9\u5e94\u7684base image\uff0c\u6240\u4ee5\u5728\u64cd\u4f5c\u4e0a\u5206\u4e3a\u9996\u6b21\u5907\u4efd\u548c\u7b2c\u4e00\u6b21\u4e4b\u540e\u7684\u5907\u4efd\u3002\n\n<img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-202 aligncenter\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2016\/03\/P1.jpg\" alt=\"20160303-01\" width=\"659\" height=\"691\" \/>\n\n\n<p style=\"padding-left: 30px;\"><strong>\u7b2c\u4e00\u6b21\u5907\u4efd<\/strong><\/p>\n\n\n\n\n<p style=\"padding-left: 30px;\">1. \u5728\u5907\u4efd\u4e2d\u5fc3\u521b\u5efa\u4e00\u4e2aimage\u4f5c\u4e3abase<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd create dest-pool\/image1 -s 1<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">2. \u5728\u4e3b\u6570\u636e\u4e2d\u5fc3\u521b\u5efa\u4e00\u4e2aimage\u7684\u5feb\u7167<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd snap create source-pool\/image1@snap1<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">3. \u4ee5\u7b2c\u4e8c\u79cd\u5bfc\u51fa\u65b9\u5f0f\u751f\u6210\u5dee\u91cf\u6587\u4ef6<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd export-diff source-pool\/image1@today image1-snap1-diff<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">4. \u5c06\u5bfc\u51fa\u7684\u5dee\u91cf\u6587\u4ef6\u4f20\u8f93\u5230\u5907\u4efd\u4e2d\u5fc3\uff0c\u4f7f\u7528scp\u6216netcat\u5de5\u5177\n5. \u4ee5\u7b2c\u4e8c\u79cd\u5bfc\u5165\u65b9\u5f0f\u5c06\u5dee\u91cf\u6587\u4ef6\u5bfc\u5165base image<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd import-diff image1-snap1-diff dest-pool\/image1<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">6. \u5907\u4efd\u5b8c\u6210<\/p>\n\n\n\n\n<p style=\"padding-left: 30px;\"><strong>\u7b2c\u4e8c\u6b21\u4e4b\u540e\u7684\u5907\u4efd<\/strong><\/p>\n\n\n\n\n<p style=\"padding-left: 30px;\">1. \u5728\u4e3b\u6570\u636e\u4e2d\u5fc3\u67e5\u627eimage\u6700\u8fd1\u4e00\u6b21\u7684\u5feb\u7167\uff0c\u5e76\u786e\u8ba4\u5907\u4efd\u4e2d\u5fc3\u662f\u5426\u5b58\u5728\u540c\u540d\u5feb\u7167<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd snap ls dest-pool\/image1 | grep snap1<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">2. \u82e5\u5b58\u5728\uff0c\u5728\u4e3b\u6570\u636e\u4e2d\u5fc3\u521b\u5efaimage\u7684\u65b0\u5feb\u7167<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd snap create source-pool\/image1@snap2<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">3. \u4ee5\u7b2c\u4e09\u79cd\u5bfc\u51fa\u65b9\u5f0f\u751f\u6210\u5dee\u91cf\u6587\u4ef6\uff0c\u6240\u7528\u7684snap\u5373\u7b2c1\u6b65\u4e2d\u627e\u5230\u7684\u5feb\u7167snap1\u3002\u6bcf\u6b21\u7684diff\u90fd\u662f\u76f8\u5bf9\u4e8e\u4e0a\u4e00\u6b21\u5907\u4efd\u800c\u8a00\u7684\uff0c\u5373\u5b9e\u73b0\u4e86\u589e\u91cf\u5907\u4efd<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd export-diff --from-snap snap1 source-pool\/image1@snap2 image1-snap1-snap2-diff<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">4. \u5c06\u5bfc\u51fa\u7684\u5dee\u91cf\u6587\u4ef6\u4f20\u8f93\u5230\u5907\u4efd\u4e2d\u5fc3\n5. \u4ee5\u7b2c\u4e09\u79cd\u5bfc\u5165\u65b9\u5f0f\u5c06\u5dee\u91cf\u6587\u4ef6\u5bfc\u5165image<\/p>\n\n\n\n\n\n<pre style=\"padding-left: 30px;\">rbd import-diff image1-snap1-snap2-diff dest-pool\/image1<\/pre>\n\n\n\n\n<p style=\"padding-left: 30px;\">6. \u5907\u4efd\u5b8c\u6210<\/p>\n\n\n\u521b\u5efa\u5907\u4efd\u65f6\uff0c\u4f1a\u5728\u539f\u59cbimage\u4e0a\u521b\u5efa\u4e00\u4e2a\u5feb\u7167\uff0c\u901a\u8fc7\u6bd4\u8f83\u65b0\u5efa\u5feb\u7167\u548c\u4e0a\u4e00\u6b21\u5907\u4efd\u7684\u5feb\u7167\u5f62\u6210\u5dee\u91cf\u6587\u4ef6\uff0c\u5c06\u8fd9\u4e2a\u5dee\u91cf\u6587\u4ef6\u5bfc\u5165\u5230backup image\u5373\u5b8c\u6210\u4e86\u5907\u4efd\u3002\u7531\u4e0a\u9762Ceph\u5904\u7406\u5dee\u91cf\u6587\u4ef6\u7684\u65b9\u5f0f\u53ef\u77e5\uff0c\u8fd9\u4e2a\u5feb\u7167\u4e5f\u4f1a\u5b58\u5728\u4e8ebackup image\u4e0a\uff0c\u4e5f\u5c31\u662f\u8bf4\u6bcf\u4e2a\u5907\u4efd\u5bf9\u5e94\u7684\u662fbackup image\u4e0a\u7684\u4e00\u4e2a\u5feb\u7167\u3002\n\n\n<h3>Ceph RBD\u5feb\u7167\u6280\u672f\u57282Cloud\u4e2d\u7684\u5e94\u7528<\/h3>\n\n\n2Cloud\u4e91\u5e73\u53f0\u4e2d\u7684\u8fd0\u7ef4\u5de5\u5177\u63d0\u4f9b\u4e86\u5f02\u5730\u5907\u4efd\u529f\u80fd\u3002\u6bcf\u5929\u53ef\u6309\u8ba1\u5212\u5bf9\u7528\u6237\u7684\u865a\u62df\u673a\u8fdb\u884c\u81ea\u52a8\u7684\u5f02\u5730\u5907\u4efd\u3002\u4e00\u65e6\u4e3b\u6570\u636e\u4e2d\u5fc3\u7684\u53d1\u751f\u5f02\u5e38\u5e76\u6536\u5230\u544a\u8b66\uff0c\u53ef\u7acb\u5373\u4f7f\u7528\u8fd0\u7ef4\u5de5\u5177\u5c06\u865a\u62df\u673a\u5728\u5907\u4efd\u4e2d\u5fc3\u542f\u52a8\uff0c\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11\u7528\u6237\u635f\u5931\u3002\n\n\u4ee5\u865a\u62df\u673avm-2cloud-1\u4e3a\u4f8b\uff0c\u5728\u7f3a\u7701\u914d\u7f6e\u4e0b\uff0c2Cloud\u4e91\u5e73\u53f0\u5728\u6bcf\u65e524\u65f6\u6267\u884c\u8fd0\u7ef4\u547d\u4ee4\uff0c\u5bf9\u5f53\u5929\u7684\u865a\u62df\u673a\u8fdb\u884c\u589e\u91cf\u5907\u4efd\uff08xxxx-xx-xx\u4e3a\u5f53\u5929\u65e5\u671f\uff09\u3002\n\n<img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-203 aligncenter\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2016\/03\/P2.jpg\" alt=\"20160303-02\" width=\"630\" height=\"275\" \/>\n\n\u5f53\u4e3b\u6570\u636e\u4e2d\u5fc3\u53d1\u751f\u6545\u969c\u65f6\uff0c\u57282Cloud\u4e91\u5e73\u53f0\u6267\u884c\u6062\u590d\u7684\u8fd0\u7ef4\u547d\u4ee4\uff0c\u5373\u53ef\u5c06\u7528\u6237\u7684\u865a\u62df\u673a\u5728\u5907\u4efd\u4e2d\u5fc3\u5feb\u901f\u542f\u52a8\uff0c\u5e76\u6062\u590d\u81f3\u6700\u8fd1\u4e00\u6b21\u5907\u4efd\u65f6\u7684\u72b6\u6001\u3002\n\n<img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-204 aligncenter\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2016\/03\/P3.jpg\" alt=\"20160303-03\" width=\"630\" height=\"275\" \/>\n\n\n<h3>\u529f\u80fd\u7684\u8fdb\u4e00\u6b65\u4f18\u5316<\/h3>\n\n\n\n\n<p style=\"padding-left: 30px;\"><strong>\u6570\u636e\u53bb\u91cd\u538b\u7f29<\/strong>\n\u8003\u8651\u5230\u4e0d\u540c\u6570\u636e\u4e2d\u5fc3\u95f4\u6570\u636e\u4f20\u8f93\u7684\u5e26\u5bbd\u538b\u529b\uff0c\u8fd0\u7ef4\u547d\u4ee4\u5c06\u5bf9\u5907\u4efd\u6587\u4ef6\u8fdb\u884c\u538b\u7f29\u53bb\u91cd\u5904\u7406\u540e\uff0c\u518d\u53d1\u9001\u5230\u5907\u4efd\u6570\u636e\u4e2d\u5fc3\u3002\u9009\u53d6\u4e09\u79cd\u538b\u7f29\u7b97\u6cd5\u7684\u5bf9\u6bd4\u7ed3\u679c\u5982\u4e0b\uff08\u4ee535G\u7684\u5dee\u91cf\u6587\u4ef6\u4e3a\u4f8b\uff09\u3002\u57fa\u4e8e\u538b\u7f29\u6bd4\u4f8b\u548c\u538b\u7f29\u65f6\u95f4\u7684\u7efc\u5408\u8003\u8651\uff0c2Cloud\u91c7\u7528gzip\u7b97\u6cd5\u4f5c\u4e3a\u538b\u7f29\u7b97\u6cd5\u3002<\/p>\n\n\n\n\n<p style=\"padding-left: 30px;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-205 alignnone\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2016\/03\/P4.jpg\" alt=\"20160303-04\" width=\"1011\" height=\"284\" \/><\/p>\n\n\n\n\n<p 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