{"id":335,"date":"2013-08-12T16:00:40","date_gmt":"2013-08-12T16:00:40","guid":{"rendered":"f9b902fc3289af4dd08de5d1de54f68f"},"modified":"2013-08-12T16:00:40","modified_gmt":"2013-08-12T16:00:40","slug":"","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/335","title":{"rendered":"DRBD"},"content":{"rendered":"

DRBD\u4ecb\u7ecd<\/h3>\n

DRBD<\/a>\u662f\u4e00\u4e2a\u7528\u8f6f\u4ef6\u5b9e\u73b0\u7684\u3001\u65e0\u5171\u4eab\u7684\u3001\u670d\u52a1\u5668\u4e4b\u95f4\u955c\u50cf\u5757\u8bbe\u5907\u5185\u5bb9\u7684\u5b58\u50a8\u590d\u5236\u89e3\u51b3\u65b9\u6848\u3002 DRBD Logo\u6570\u636e\u955c\u50cf\uff1a\u5b9e\u65f6\u3001\u900f\u660e\u3001\u540c\u6b65\uff08\u6240\u6709\u670d\u52a1\u5668\u90fd\u6210\u529f\u540e\u8fd4\u56de\uff09\u3001\u5f02\u6b65\uff08\u672c\u5730\u670d\u52a1\u5668\u6210\u529f\u540e\u8fd4\u56de\uff09\u3002DBRD\u7684\u6838\u5fc3\u529f\u80fd\u901a\u8fc7Linux<\/a>\u7684\u5185\u6838\u5b9e\u73b0\uff0c\u6700\u63a5\u8fd1\u7cfb\u7edf\u7684IO\u6808\uff0c\u4f46\u5b83\u4e0d\u80fd\u795e\u5947\u5730\u6dfb\u52a0\u4e0a\u5c42\u7684\u529f\u80fd\u6bd4\u5982\u68c0\u6d4b\u5230EXT3\u6587\u4ef6\u7cfb\u7edf\u7684\u5d29\u6e83\u3002DBRD\u7684\u4f4d\u7f6e\u5904\u4e8e\u6587\u4ef6\u7cfb\u7edf\u4ee5\u4e0b\uff0c\u6bd4\u6587\u4ef6\u7cfb\u7edf\u66f4\u52a0\u9760\u8fd1\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u53caIO\u6808\u3002<\/p>\n

DRBD\u7f16\u8bd1\u5b89\u88c5<\/h3>\n

\u5b89\u88c5\u6240\u9700\u4f9d\u8d56:<\/p>\n

\n
    \n
  1. yum -y install gcc kernel-devel kernel-headers flex<\/li>\n<\/ol>\n<\/div>\n

    \u5f00\u59cb\u5b89\u88c5drbd\uff0c\u4e0b\u8f7d\u5730\u5740\uff1ahttp:\/\/oss.linbit.com\/drbd\/<\/a>
    \n\u5b89\u88c5\u7528\u6237\u7a7a\u95f4\u5de5\u5177\uff1a<\/strong><\/p>\n

    \n
      \n
    1. cd \/tmp<\/li>\n
    2. wget http:\/\/oss.linbit.com\/drbd\/8.4\/drbd-8.4.1.tar.gz<\/li>\n
    3. tar xzf drbd-8.4.1.tar.gz<\/li>\n
    4. cd drbd-8.4.1<\/li>\n
    5. .\/configure --prefix=\/usr\/local\/drbd --with-km<\/li>\n
    6. make KDIR=\/usr\/src\/kernels\/2.6.18-274.18.1.el5-i686\/<\/li>\n
    7. make install<\/li>\n
    8. mkdir -p \/usr\/local\/drbd\/var\/run\/drbd<\/li>\n
    9. cp \/usr\/local\/drbd\/etc\/rc.d\/init.d\/drbd \/etc\/rc.d\/init.d<\/li>\n
    10. chkconfig --add drbd<\/li>\n
    11. chkconfig drbd on<\/li>\n<\/ol>\n<\/div>\n

      \u5b89\u88c5drbd\u6a21\u5757:<\/strong><\/p>\n

      \n
        \n
      1. cd drbd<\/li>\n
      2. make clean<\/li>\n
      3. make KDIR=\/usr\/src\/kernels\/2.6.18-274.18.1.el5-i686\/<\/li>\n
      4. cp drbd.ko \/lib\/modules\/`uname -r`\/kernel\/lib\/<\/li>\n
      5. depmod<\/li>\n<\/ol>\n<\/div>\n

        \u6ce8\uff1ausr\/src\/kernels\/2.6.18-274.18.1.el5-i686\/\u8fd9\u4e2a\u5185\u6838\u6e90\u7801\u6811\u8def\u5f84\u9700\u8981\u6839\u636e\u81ea\u5df1\u7684\u7cfb\u7edf\u4fee\u6539\u3002<\/span><\/p>\n

        DRBD\u914d\u7f6e<\/h3>\n

        \u5efa\u7acb\u5206\u533a<\/h4>\n

        \u5047\u5982\u73b0\u5728\u6709\u7b2c\u4e8c\u5757\u786c\u76d8hdb\uff0c\u4e24\u4e2anode\u90fd\u8981\u5206\u533a\u3002<\/p>\n

        \n
          \n
        1. #fdisk \/dev\/hdb                                                      \/\/\u51c6\u5907\u4e3a hdb \u5efa\u7acb\u5206\u533a<\/li>\n
        2.  The number of cylinders for this disk is set to 20805.<\/li>\n
        3.  There is nothing wrong with that, but this is larger than 1024,<\/li>\n
        4.  and could in certain setups cause problems with:<\/li>\n
        5.  1) software that runs at boot time (e.g., old versions of LILO)<\/li>\n
        6.  2) booting and partitioning software from other OSs<\/li>\n
        7.    (e.g., DOS FDISK, OS\/2 FDISK)<\/li>\n
        8.  Command (m for help): n                                              \/\/\u952e\u5165 n \u8868\u793a\u8981\u5efa\u7acb\u5206\u533a<\/li>\n
        9.  Command action<\/li>\n
        10.     e   extended<\/li>\n
        11.     p   primary partition (1-4)<\/li>\n
        12.  p                                                                    \/\/\u952e\u5165 p \u8868\u793a\u5efa\u7acb\u4e3b\u8981\u5206\u533a<\/li>\n
        13.  Partition number (1-4): 1                                            \/\/\u952e\u5165 1 \u4e3a\u6b64\u4e3b\u8981\u5206\u533a\u4ee3\u53f7<\/li>\n
        14.  First cylinder (1-20805, default 1):                                 \/\/\u5f00\u59cb\u78c1\u67f1\u503c\uff0c\u6309\u4e0b enter \u5373\u53ef<\/li>\n
        15.  Using default value 1<\/li>\n
        16.  Last cylinder or +size or +sizeM or +sizeK (1-20805, default 20805): \/\/\u7ed3\u675f\u78c1\u67f1\u503c\uff0c\u6309\u4e0b enter \u5373\u53ef<\/li>\n
        17.  Using default value 20805<\/li>\n
        18.  Command (m for help): w                                              \/\/\u952e\u5165 w \u8868\u793a\u786e\u5b9a\u6267\u884c\u521a\u624d\u8bbe\u5b9a<\/li>\n
        19.  The partition table has been altered!<\/li>\n
        20.  Calling ioctl() to re-read partition table.<\/li>\n
        21.  Syncing disks.<\/li>\n
        22.  [root@node1 yum.repos.d]# partprobe                                  \/\/\u4f7f\u521a\u624d\u7684 partition table \u53d8\u66f4\u751f\u6548<\/li>\n<\/ol>\n<\/div>\n

          \u5efa\u7acb\u5206\u533a\u5b8c\u6210\u540e\u4f7f\u7528\u6307\u4ee4 fdisk -l \u786e\u5b9a partition talbe \u72b6\u6001<\/p>\n

          \n
            \n
          1. #fdisk -l<\/li>\n
          2.  Disk \/dev\/hda: 21.4 GB, 21474754560 bytes<\/li>\n
          3.  255 heads, 63 sectors\/track, 2610 cylinders<\/li>\n
          4.  Units = cylinders of 16065 * 512 = 8225280 bytes<\/li>\n
          5.     Device Boot      Start         End      Blocks   Id  System<\/li>\n
          6.  \/dev\/hda1   *           1          13      104391   83  Linux<\/li>\n
          7.  \/dev\/hda2              14        2610    20860402+  8e  Linux LVM<\/li>\n
          8.  Disk \/dev\/hdb: 10.7 GB, 10737377280 bytes<\/li>\n
          9.  16 heads, 63 sectors\/track, 20805 cylinders<\/li>\n
          10.  Units = cylinders of 1008 * 512 = 516096 bytes<\/li>\n
          11.     Device Boot      Start         End      Blocks   Id  System<\/li>\n
          12.  \/dev\/hdb1               1       20805    10485688+  83  Linux<\/li>\n<\/ol>\n<\/div>\n

            \u5efa\u7acb\u5206\u533a\u5b8c\u6210\u540e\u8bf7\u5efa\u7acb \/db \u76ee\u5f55\u3002 (Node1 \u53ca Node2 \u90fd\u5fc5\u987b\u5efa\u7acb)<\/p>\n

            \n
              \n
            1. #mkdir \/db<\/li>\n<\/ol>\n<\/div>\n

              \u5efa\u7acbdrbd\u914d\u7f6e\u6587\u4ef6<\/h4>\n

              \u4e3b\u8981\u5b9a\u4e49\u4e24\u5757global\u548cresource\u3002<\/p>\n

              \n
                \n
              1. vi \/usr\/local\/drbd\/etc\/drbd.conf<\/li>\n<\/ol>\n<\/div>\n

                \u5199\u5165\uff1a<\/p>\n

                \n
                  \n
                1. include \"drbd.d\/global_common.conf\";<\/li>\n
                2. include \"drbd.d\/*.res\";<\/li>\n<\/ol>\n<\/div>\n
                  \n
                    \n
                  1. vi \/usr\/local\/drbd\/etc\/drbd.d\/global_common.conf<\/li>\n<\/ol>\n<\/div>\n

                    \u5199\u5165\uff1a<\/p>\n

                    \n
                      \n
                    1. global {<\/li>\n
                    2.   usage-count yes;<\/li>\n
                    3. }<\/li>\n
                    4. common {<\/li>\n
                    5.   net {<\/li>\n
                    6.     protocol C;<\/li>\n
                    7.   }<\/li>\n
                    8. }<\/li>\n<\/ol>\n<\/div>\n
                      \n
                        \n
                      1. vi \/usr\/local\/drbd\/etc\/drbd.d\/r0.res<\/li>\n<\/ol>\n<\/div>\n

                        \u5199\u5165\uff1a<\/p>\n

                        \n
                          \n
                        1. resource r0 {<\/li>\n
                        2.   on node1 {<\/li>\n
                        3.     device    \/dev\/drbd1;<\/li>\n
                        4.     disk      \/dev\/hdb1;<\/li>\n
                        5.     address   192.168.1.101:7789;<\/li>\n
                        6.     meta-disk internal;<\/li>\n
                        7.   }<\/li>\n
                        8.   on node2 {<\/li>\n
                        9.     device    \/dev\/drbd1;<\/li>\n
                        10.     disk      \/dev\/hdb1;<\/li>\n
                        11.     address   192.168.1.103:7789;<\/li>\n
                        12.     meta-disk internal;<\/li>\n
                        13.   }<\/li>\n
                        14. }<\/li>\n<\/ol>\n<\/div>\n

                          \u8bbe\u7f6ehostname<\/h4>\n

                          \u6839\u636e\u4e0a\u9762\u7684resource\u914d\u7f6e\u6587\u4ef6\uff0c\u9700\u8981\u5bf9192.168.1.101\u548c192.168.1.103\u5206\u522b\u8bbe\u7f6ehostname\u4e3anode1\u548cnode2\uff0c\u8bbe\u7f6e\u65b9\u6cd5\u5982\u4e0b:<\/p>\n

                          \n
                            \n
                          1. vi \/etc\/sysconfig\/network<\/li>\n<\/ol>\n<\/div>\n

                            \u4fee\u6539HOSTNAME\u4e3anode1<\/p>\n

                            \n
                              \n
                            1. vi \/etc\/hosts<\/li>\n<\/ol>\n<\/div>\n

                              \u586b\u5165:<\/p>\n

                              \n
                                \n
                              1. 192.168.1.101 node1<\/li>\n
                              2. 192.168.1.103 node2<\/li>\n<\/ol>\n<\/div>\n

                                \u4f7fnode1 hostnmae\u4e34\u65f6\u751f\u6548<\/p>\n

                                \n
                                  \n
                                1. hostname node1<\/li>\n<\/ol>\n<\/div>\n

                                  node2\u673a\u5668\u8bbe\u7f6e\u7c7b\u4f3c\u3002<\/p>\n

                                  \u8bbe\u7f6eresource<\/h4>\n

                                  \u4ee5\u4e0b\u64cd\u4f5c\u9700\u8981\u5728node1\u548cnode2\u64cd\u4f5c\u3002<\/p>\n

                                  \n
                                    \n
                                  1. #modprobe drbd                                    \/\/\u8f7d\u5165 drbd \u6a21\u5757<\/li>\n
                                  2. #lsmod|grep drbd                                  \/\/\u786e\u8ba4 drbd \u6a21\u5757\u662f\u5426\u8f7d\u5165<\/li>\n
                                  3.  drbd                  228528  0<\/li>\n
                                  4.  #dd if=\/dev\/zero of=\/dev\/hdb1 bs=1M count=100     \/\/\u628a\u4e00\u4e9b\u8d44\u6599\u585e\u5230 hdb \u5167 (\u5426\u5219 create-md \u65f6\u6709\u53ef\u80fd\u4f1a\u51fa\u73b0\u9519\u8bef)<\/li>\n
                                  5.  #drbdadm create-md r0                             \/\/\u5efa\u7acb drbd resource<\/li>\n
                                  6.  #drbdadm up r0                                  \/\/\u542f\u52a8 resource r0<\/li>\n<\/ol>\n<\/div>\n

                                    \u67e5\u770bnode1\u548cnode2\u7684\u72b6\u6001\u5e94\u8be5\u7c7b\u4f3c\u4e0b\u9762\u7684\uff1a<\/p>\n

                                    \n
                                      \n
                                    1. cat \/proc\/drbd<\/li>\n<\/ol>\n<\/div>\n
                                      \n
                                        \n
                                      1. version: 8.4.1 (api:1\/proto:86-100)<\/li>\n
                                      2. GIT-hash: 91b4c048c1a0e06777b5f65d312b38d47abaea80 build by root@localhost.localdomain, 2012-02-12 06:05:36<\/li>\n
                                      3.  m:res  cs         ro                   ds                         p  mounted  fstype<\/li>\n
                                      4.  0:r0   Connected  Secondary\/Secondary  Inconsistent\/Inconsistent  C<\/li>\n<\/ol>\n<\/div>\n

                                        \u8868\u660e\u73b0\u5728\u5df2\u7ecf\u542f\u52a8\u670d\u52a1\uff0c\u4f46\u8fd8\u6ca1\u6709\u8bbe\u7f6e\u540c\u6b65\uff08\u5373\u9700\u8981\u8bbe\u7f6ePrimary Node\uff09<\/p>\n

                                        \u8bbe\u7f6ePrimary Node<\/h4>\n

                                        \u4ee5\u4e0b\u64cd\u4f5c\u4ec5\u5728node1\u6267\u884c\u3002
                                        \n\u8bbe\u7f6enode1\u4e3aprimary node:<\/p>\n

                                        \n
                                          \n
                                        1. drbdadm primary --force r0<\/li>\n<\/ol>\n<\/div>\n

                                          \u518d\u6b21\u67e5\u770bnode1\u7684\u72b6\u6001\uff1a<\/p>\n

                                          \n
                                            \n
                                          1. #cat \/proc\/drbd<\/li>\n
                                          2. version: 8.4.1 (api:1\/proto:86-100)<\/li>\n
                                          3. GIT-hash: 91b4c048c1a0e06777b5f65d312b38d47abaea80 build by root@localhost.localdomain, 2012-02-12 06:47:37<\/li>\n
                                          4.  <\/li>\n
                                          5.  1: cs:Connected ro:Primary\/Secondary ds:UpToDate\/UpToDate C r-----<\/li>\n
                                          6.     ns:52892 nr:0 dw:0 dr:52892 al:0 bm:10 lo:0 pe:0 ua:0 ap:0 ep:1 wo:b oos:0<\/li>\n<\/ol>\n<\/div>\n

                                            \u6211\u4eec\u770b\u5230\u72b6\u6001\u5df2\u7ecf\u53d8\u6210Primary\/Secondary\uff0c\u5373\u8bbe\u7f6eprimary node\u6210\u529f\u3002<\/p>\n

                                            \u521b\u5efaDRBD\u6587\u4ef6\u7cfb\u7edf<\/h4>\n

                                            \u4ee5\u4e0b\u64cd\u4f5c\u4ec5\u5728node1\u6267\u884c\u3002
                                            \n\u4e0a\u9762\u5df2\u7ecf\u5b8c\u6210\u4e86\/dev\/drbd1\u7684\u521d\u59cb\u5316\uff0c\u73b0\u5728\u6765\u628a\/dev\/drbd1\u683c\u5f0f\u5316\u6210ext3\u683c\u5f0f\u7684\u6587\u4ef6\u7cfb\u7edf\u3002<\/p>\n

                                            \n
                                              \n
                                            1. #mkfs.ext3 \/dev\/drbd1<\/li>\n<\/ol>\n<\/div>\n

                                              \u7136\u540e\u5c06\/dev\/drbd1\u6302\u8f7d\u5230\u4e4b\u524d\u521b\u5efa\u7684\/db\u76ee\u5f55\u3002<\/p>\n

                                              \n
                                                \n
                                              1. #mount \/dev\/drbd1 \/db<\/li>\n<\/ol>\n<\/div>\n

                                                \u73b0\u5728\u4f60\u53ea\u8981\u628a\u6570\u636e\u5199\u5165\/db\u76ee\u5f55\uff0cdrbd\u5373\u4f1a\u7acb\u523b\u628a\u6570\u636e\u540c\u6b65\u5230\u5907\u673a192.168.1.103\u7684\/dev\/hdb1\u5206\u533a\u4e0a\u3002<\/p>\n

                                                drbd\u540c\u6b65\u6d4b\u8bd5<\/h4>\n

                                                \u5f53\u5728\u5907\u673anode2\u542f\u52a8drbd\u65f6\uff0c\u5b83\u662f\u65e0\u6cd5\u6302\u8f7d\/dev\/hdb1\u5206\u533a\u7684\uff0c\u6211\u4eec\u53ef\u4ee5\u5c1d\u8bd5\u5199\u4e9b\u6570\u636e\u5230node1\u7684\u76ee\u5f55\/db\u4e0a\uff0c\u7136\u540e\u505c\u6b62node2\u7684drbd\u3002<\/p>\n

                                                \n
                                                  \n
                                                1. drbdadm down r0<\/li>\n<\/ol>\n<\/div>\n

                                                  \u4e4b\u540e\u5c31\u53ef\u4ee5\u628anode2\u7684\/dev\/hdb1\u6302\u8f7d\u5230\u76ee\u5f55\/db<\/p>\n

                                                  \n
                                                    \n
                                                  1. mount -t ext3 \/dev\/hdb1 \/db<\/li>\n<\/ol>\n<\/div>\n

                                                    \u6211\u4eec\u5c31\u53ef\u4ee5\u67e5\u770bnode2\u7684\/db\u76ee\u5f55\u662f\u5426\u6709node1\u7684\u6570\u636e\u3002<\/p>\n

                                                    \u624b\u52a8\u5207\u6362\u4e3b\u5907\u673a<\/h4>\n

                                                    \u6211\u4eec\u53ef\u4ee5\u628anode1\u6539\u53d8\u4e3a\u5907\u673a\uff0c\u800cnode2\u6539\u53d8\u4e3a\u4e3b\u673a\u3002
                                                    \n\u5728node1\u4e0a\u64cd\u4f5c\uff1a<\/p>\n

                                                    \n
                                                      \n
                                                    1. umount \/dev\/drbd1<\/li>\n
                                                    2. drbdadm secondary r0<\/li>\n<\/ol>\n<\/div>\n

                                                      \u5728node2\u4e0a\u64cd\u4f5c\uff1a<\/p>\n

                                                      \n
                                                        \n
                                                      1. drbdadm primary r0<\/li>\n<\/ol>\n<\/div>\n

                                                        \u6b64\u65f6\u5e94\u8be5\u5df2\u7ecf\u5207\u6362\u6210\u529f<\/p>\n

                                                         <\/p>\n

                                                        \u7279\u522b\u6ce8\u610f<\/span>\uff1a<\/span><\/strong><\/p>\n

                                                        \u4e00\u5b9a\u8981\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u4e24\u4e2a\u53c2\u6570\uff0c\u5426\u5219\u5c06\u4f1a\u5bfc\u81f4\u670d\u52a1\u542f\u52a8\u65f6\u65e0\u9650\u671f\u7b49\u5f85\u3002<\/p>\n

                                                                     startup{
                                                        \n               wfc-timeout 120;
                                                        \n               degr-wfc-timeout 120;
                                                        \n            }<\/p>\n

                                                        \u5982\u4e0b\u4e00\u4e2a\u914d\u7f6e\u5b9e\u4f8b\uff1a
                                                        \nglobal { usage-count no; }
                                                        \ncommon { syncer { rate 200M; } }
                                                        \nresource r0 {
                                                        \n            protocol C;
                                                        \n            net {
                                                        \n                 cram-hmac-alg sha1;
                                                        \n                 shared-secret \"MySQL_HA\";
                                                        \n            }<\/p>\n

                                                                    disk{
                                                        \n               on-io-error detach;
                                                        \n               fencing resource-only;
                                                        \n            }
                                                        \n            startup{<\/span>
                                                        \n               wfc-timeout 120;<\/span>
                                                        \n               degr-wfc-timeout 120;<\/span>
                                                        \n            }<\/span>
                                                        \n            on mysql-n1 {
                                                        \n                 device    \/dev\/drbd0;
                                                        \n                 disk      \/dev\/sdb1;
                                                        \n                 address   10.0.17.155:7898;
                                                        \n                 meta-disk  internal;
                                                        \n            }
                                                        \n            on mysql-n2 {
                                                        \n                 device    \/dev\/drbd0;
                                                        \n                 disk      \/dev\/sdb1;
                                                        \n                 address   10.0.17.156:7898;
                                                        \n                 meta-disk  internal;
                                                        \n            }
                                                        \n       }\n<\/p>\n

                                                        \u8bbe\u7f6eprimary\u8282\u70b9&mkfs
                                                        \n<\/strong>[root@mysql-n1 ~]# drbdadm primary all\uff08\u62a5\u9519\uff0c\u6267\u884c\u4e0b\u9762\u64cd\u4f5c\uff09<\/span>
                                                        \n0: State change failed: (-2) Need access to UpToDate data
                                                        \nCommand 'drbdsetup 0 primary' terminated with exit code 17
                                                        \n[root@mysql-n1 ~]# drbdadm -- --overwrite-data-of-peer primary all<\/span>
                                                        \n[root@mysql-n1 ~]# mkfs.ext3 \/dev\/drbd0<\/span><\/p>\n

                                                        \n\u67e5\u770bdrbd\u7684\u72b6\u6001
                                                        \n<\/strong>[root@mysql-n1 ~]# cat \/proc\/drbd<\/span>
                                                        \nversion: 8.3.13 (api:88\/proto:86-96)
                                                        \nGIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 build by <\/p>\n

                                                        mockbuild@builder10.centos.org, 2012-05-07 11:56:36
                                                        \n 0: cs:SyncSource ro:Primary\/Secondary ds:UpToDate\/Inconsistent C r-----
                                                        \n    ns:5043196 nr:0 dw:0 dr:5051264 al:0 bm:307 lo:1 pe:5 ua:64 ap:0 ep:1 wo:b <\/p>\n

                                                        oos:15921556
                                                        \n        [===>................] sync'ed: 24.1% (15548\/20472)M
                                                        \n        finish: 0:02:02 speed: 129,304 (126,064) K\/sec<\/p>\n

                                                        \u5176\u4e2d\uff1aro\u662f\u89d2\u8272\u4fe1\u606f\uff1aPrimary\/Secondary\uff08\u4ee3\u8868\u8fd9\u4e2a\u662f\u4e3b\u8282\u70b9\uff09
                                                        \n                    Secondary\/Primary\uff08\u4ee3\u8868\u8fd9\u4e2a\u662f\u526f\u8282\u70b9\uff09<\/p>\n

                                                              ds\u662f\u78c1\u76d8\u72b6\u6001\uff1aUpToDate\/Inconsistent\uff08\u6b63\u5728\u540c\u6b65\uff0c\u6570\u636e\u8fd8\u6ca1\u6709\u4e00\u81f4\uff09
                                                        \n                    UpToDate\/UpToDate    \uff08\u540c\u6b65\u5b8c\u6210\uff0c\u6570\u636e\u4e00\u81f4\uff09
                                                        \n      ns\u662f\u7f51\u7edc\u4f20\u8f93\u7684\u6570\u636e\u5305\uff1a\u4ee5K\u4e3a\u5b57\u8282
                                                        \n    
                                                        \n      dw\u662f\u78c1\u76d8\u5199\u64cd\u4f5c
                                                        \n      dr\u662f\u78c1\u76d8\u8bfb\u64cd\u4f5c
                                                        \n       
                                                        \n      
                                                        \n\u6302\u8f7dDRBD\u5206\u533a\u5230\/data\u76ee\u5f55\u4e0b<\/strong>
                                                        \n[root@mysql-n1 ~]# mkdir \/data
                                                        \n[root@mysql-n1 ~]# mount \/dev\/drbd0 \/data
                                                        \n[root@mysql-n1 ~]# df -h<\/span>
                                                        \nFilesystem            Size  Used Avail Use% Mounted on
                                                        \n\/dev\/sda1              37G  4.5G   31G  13% \/
                                                        \ntmpfs                 502M     0  502M   0% \/dev\/shm
                                                        \n\/dev\/drbd0             20G  173M   19G   1% \/data<\/p>\n

                                                        \n\u6ce8\uff1aDRBD\u7684\u82f1\u6587\u5168\u79f0\u5c31\u662fDistributed Replicated Block Device\uff08\u5206\u5e03\u5f0f\u5757\u8bbe\u5907\u590d\u5236\uff09,
                                                        \nSecondary\u8282\u70b9\u7684\/dev\/drbdX<\/strong>\u662f\u4e0d\u80fd\u8fdb\u884c\u6302\u8f7d<\/p>\n

                                                         <\/p>\n

                                                        \u5176\u5b83\u7684\u63cf\u8ff0<\/strong><\/p>\n

                                                        more \/proc\/drbd
                                                        \nversion: 8.2.1 (api:86\/proto:86-87)
                                                        \nGIT-hash: 318925802fc2638479ad090b73d7af45503dd184 build by root@test-105<\/a>, 2010-01-11 17:35:20<\/p>\n

                                                         1: cs:Connected st:Secondary\/Primary ds:UpToDate\/UpToDate C r---
                                                        \n    ns:0 nr:1645688 dw:1645688 dr:0 al:0 bm:88 lo:0 pe:0 ua:0 ap:0
                                                        \n        resync: used:0\/31 hits:29120 misses:88 starving:0 dirty:0 changed:88
                                                        \n        act_log: used:0\/127 hits:0 misses:0 starving:0 dirty:0 changed:0<\/p>\n

                                                        Field        \u8bf4\u660e                  \u503c\uff1a
                                                        \ncs         \u8fde\u63a5\u72b6\u6001               \u51fa\u73b0\u7684\u503c\uff1a
                                                        \n                    o Unconfigured\uff1a\u8bbe\u5907\u5728\u7b49\u5f85\u914d\u7f6e\u3002
                                                        \n                    o Unconnected\uff1a\u8fde\u63a5\u6a21\u5757\u65f6\u7684\u8fc7\u6e21\u72b6\u6001\u3002
                                                        \n                    o WFConnection\uff1a\u8bbe\u5907\u7b49\u5f85\u53e6\u4e00\u6d4b\u7684\u914d\u7f6e\u3002
                                                        \n                    o WFReportParams\uff1a\u8fc7\u6e21\u72b6\u6001\uff0c\u7b49\u5f85\u65b0TCP \u8fde\u63a5\u7684\u7b2c\u4e00\u4e2a\u6570\u636e\u5305\u65f6\u3002.
                                                        \n                    o SyncingAll\uff1a\u6b63\u5c06\u4e3b\u8282\u70b9\u7684\u6240\u6709\u6a21\u5757\u590d\u5236\u5230\u6b21\u7ea7\u8282\u70b9\u4e0a\u3002.
                                                        \n                    o SyncingQuick\uff1a\u901a\u8fc7\u590d\u5236\u5df2\u88ab\u66f4\u65b0\u7684\u6a21\u5757\uff08\u56e0\u4e3a\u73b0\u5728\u6b21\u7ea7\u8282\u70b9\u5df2\u7ecf\u79bb\u5f00\u4e86\u96c6\u7fa4\uff09\u6765\u66f4\u65b0\u6b21\u7ea7\u8282\u70b9\u3002
                                                        \n                    o Connected\uff1a\u4e00\u5207\u6b63\u5e38\u3002
                                                        \n                    o Timeout\uff1a\u8fc7\u6e21\u72b6\u6001\u3002
                                                        \nst         \u72b6\u6001\uff08\u8bbe\u5907\u7684\u4f5c\u7528\uff09      \u53ef\u80fd\u7684\u503c\u4e3a\uff1a
                                                        \n                    o \u672c\u5730\/\u8fdc\u7a0b\u4e00\u7ea7\u72b6\u6001
                                                        \n                    o \u4e8c\u7ea7\u72b6\u6001
                                                        \n                    o \u672a\u77e5\uff08\u8fd9\u4e0d\u662f\u4e00\u79cd\u4f5c\u7528\uff09
                                                        \nns    \u7f51\u7edc\u53d1\u9001    \u6a21\u5757\u53f7\u7801
                                                        \nnr    \u7f51\u7edc\u63a5\u6536    \u6a21\u5757\u53f7\u7801
                                                        \ndw    \u78c1\u76d8\u5199\u5165    \u6a21\u5757\u53f7\u7801
                                                        \ndr    \u78c1\u76d8\u8bfb\u53d6    \u6a21\u5757\u53f7\u7801
                                                        \nof    \u8fd0\u884c\u4e2d\uff08\u8fc7\u65f6\u7684\uff09\u6a21\u5757\u53f7\u7801
                                                        \npe    \u5f85\u89e3\u51b3\u7684    \u6a21\u5757\u53f7\u7801
                                                        \nua    \u672a\u7b54\u590d\u7684    \u6a21\u5757\u53f7\u7801\uff08\u6700\u597d\u4e3a0\uff09<\/p>\n

                                                         <\/p>\n

                                                        \u5b89\u88c5\u8fc7\u7a0b\u4e2d\u53ef\u80fd\u9047\u5230\u7684\u4e00\u4e9b\u95ee\u9898<\/b><\/span><\/span><\/span><\/p>\n

                                                        1<\/span><\/span>\u3001<\/span><\/span>create-md<\/span><\/span>\u7684\u65f6\u5019\u603b\u662f\u51fa\u73b0\u4e0b\u9762\u7684\u95ee\u9898<\/span><\/span><\/span><\/p>\n

                                                        \u6ce8\uff1a<\/span><\/span><\/span>mds1<\/span><\/span><\/span>\u5728<\/span><\/span><\/span>create-md<\/span><\/span><\/span>\u7684\u65f6\u5019\u603b\u662f\u51fa\u73b0\u4e0b\u9762\u7684\u95ee\u9898\uff0c<\/span><\/span><\/span><\/p>\n

                                                        [root@mds1 ~]# drbdadm create-md r0  
                                                        \nmd_offset 2023411712
                                                        \nal_offset 2023378944
                                                        \nbm_offset 2023313408<\/span><\/span><\/span><\/p>\n

                                                        Found ext3 filesystem which uses 1975992 kB
                                                        \ncurrent configuration leaves usable 1975892 kB<\/span><\/span><\/span><\/p>\n

                                                        Device size would be truncated, which
                                                        \nwould corrupt data and result in
                                                        \n'access beyond end of device' errors.
                                                        \nYou need to either
                                                        \n   * use external meta data (recommended)
                                                        \n   * shrink that filesystem first
                                                        \n   * zero out the device (destroy the filesystem)
                                                        \nOperation refused.<\/span><\/span><\/span><\/p>\n

                                                        Command 'drbdmeta 0 v08 \/dev\/sda3 internal create-md' terminated with exit code 40
                                                        \ndrbdadm create-md r0: exited with code 40<\/span><\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

                                                        DRBD\u4ecb\u7ecd<\/h3>\n

                                                        DRBD<\/a>\u662f\u4e00\u4e2a\u7528\u8f6f\u4ef6\u5b9e\u73b0\u7684\u3001\u65e0\u5171\u4eab\u7684\u3001\u670d\u52a1\u5668\u4e4b\u95f4\u955c\u50cf\u5757\u8bbe\u5907\u5185\u5bb9\u7684\u5b58\u50a8\u590d\u5236\u89e3\u51b3\u65b9\u6848\u3002 DRBD Logo\u6570\u636e\u955c\u50cf\uff1a\u5b9e\u65f6\u3001\u900f\u660e\u3001\u540c\u6b65\uff08\u6240\u6709\u670d\u52a1\u5668\u90fd\u6210\u529f\u540e\u8fd4\u56de\uff09\u3001\u5f02\u6b65\uff08\u672c\u5730\u670d\u52a1\u5668\u6210\u529f\u540e\u8fd4\u56de\uff09\u3002DBRD\u7684\u6838\u5fc3\u529f\u80fd\u901a\u8fc7Linux<\/a>\u7684\u5185\u6838\u5b9e\u73b0\uff0c\u6700\u63a5\u8fd1\u7cfb\u7edf\u7684IO\u6808\uff0c\u4f46\u5b83\u4e0d\u80fd\u795e\u5947\u5730\u6dfb\u52a0\u4e0a\u5c42\u7684\u529f\u80fd\u6bd4\u5982\u68c0\u6d4b\u5230EXT3\u6587\u4ef6\u7cfb\u7edf\u7684\u5d29\u6e83\u3002DBRD\u7684\u4f4d\u7f6e\u5904\u4e8e\u6587\u4ef6\u7cfb\u7edf\u4ee5\u4e0b\uff0c\u6bd4\u6587\u4ef6\u7cfb\u7edf\u66f4\u52a0\u9760\u8fd1\u64cd\u4f5c\u7cfb\u7edf\u5185\u6838\u53caIO\u6808\u3002<\/p>\n

                                                        DRBD\u7f16\u8bd1\u5b89\u88c5<\/h3>\n

                                                        \u5b89\u88c5\u6240\u9700\u4f9d\u8d56:<\/p>\n

                                                        \n
                                                          \n
                                                        1. yum -y install gcc kernel-devel kernel-headers flex<\/li>\n<\/ol>\n<\/div>\n

                                                          \u5f00\u59cb\u5b89\u88c5drbd\uff0c\u4e0b\u8f7d\u5730\u5740\uff1ahttp:\/\/oss.linbit.com\/...<\/a><\/p>\n

                                                          \u7ee7\u7eed\u9605\u8bfb →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[287],"tags":[141],"class_list":["post-335","post","type-post","status-publish","format-standard","hentry","category-linux","tag-drbd"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/335","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=335"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/335\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=335"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=335"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}