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标签归档:extundelete
记录一次rm -rf 删除数据文件异常恢复
因为人员离职闹得不愉快,系统工程师离职后,由于公司未及时关闭其vpn,数据库服务器(Linux 6.5 Oracle 11.2.0.1)帐号未及时被修改,最后直接上去rm ORACLE_BASE给干掉,悲剧的是ORADATA目录也在里面,更加悲剧的是所有数据文件都在里面.也就是说数据库彻底被删除,而且没有任何备份.朋友咨询了我,让我给予支持.最后比较幸运,文件没有被覆盖,inode都还在,通过extundelete顺利恢复所有数据文件,控制文件,redo文件(extundelete恢复Linux被删除文件),数据库顺利打开,实现0丢失,算是一次完美的恢复
[root@DB1 tmp]# tar xvf extundelete-0.2.4.tar extundelete-0.2.4/ extundelete-0.2.4/acinclude.m4 extundelete-0.2.4/missing extundelete-0.2.4/autogen.sh extundelete-0.2.4/aclocal.m4 extundelete-0.2.4/configure extundelete-0.2.4/LICENSE extundelete-0.2.4/README extundelete-0.2.4/install-sh extundelete-0.2.4/config.h.in extundelete-0.2.4/src/ extundelete-0.2.4/src/extundelete.cc extundelete-0.2.4/src/block.h extundelete-0.2.4/src/kernel-jbd.h extundelete-0.2.4/src/insertionops.cc extundelete-0.2.4/src/block.c extundelete-0.2.4/src/cli.cc extundelete-0.2.4/src/extundelete-priv.h extundelete-0.2.4/src/extundelete.h extundelete-0.2.4/src/jfs_compat.h extundelete-0.2.4/src/Makefile.in extundelete-0.2.4/src/Makefile.am extundelete-0.2.4/configure.ac extundelete-0.2.4/depcomp extundelete-0.2.4/Makefile.in extundelete-0.2.4/Makefile.am [root@DB1 tmp]# cd extundelete-0.2.4 [root@DB1 extundelete-0.2.4]# ./configure Configuring extundelete 0.2.4 Writing generated files to disk [root@DB1 extundelete-0.2.4]# make && make install make -s all-recursive Making all in src Making install in src /usr/bin/install -c extundelete '/usr/local/bin' [root@DB1 extundelete-0.2.4]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 244G 11G 221G 5% / tmpfs 16G 72K 16G 1% /dev/shm /dev/sda1 190M 62M 119M 35% /boot /dev/sdb1 2.0T 71M 1.9T 1% /home [root@DB1 extundelete-0.2.4]# umount /dev/sdb1 umount: /home: device is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1)) [root@DB1 extundelete-0.2.4]# fuser -m -u /home /home: 3914c(oracle) 8372c(oracle) [root@DB1 extundelete-0.2.4]# kill -9 3914 [root@DB1 extundelete-0.2.4]# fuser -m -u /home /home: 8372c(oracle) [root@DB1 extundelete-0.2.4]# kill -9 8372 [root@DB1 extundelete-0.2.4]# fuser -m -u /home [root@DB1 extundelete-0.2.4]# umount /dev/sdb1 [root@DB1 extundelete-0.2.4]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 244G 11G 221G 5% / tmpfs 16G 72K 16G 1% /dev/shm /dev/sda1 190M 62M 119M 35% /boot [root@DB1 extundelete-0.2.4]# extundelete /dev/sdb1 --restore-all NOTICE: Extended attributes are not restored. Loading filesystem metadata ... 16384 groups loaded. Loading journal descriptors ... 26542 descriptors loaded. Searching for recoverable inodes in directory / ... 18896 recoverable inodes found. Looking through the directory structure for deleted files ... 2 recoverable inodes still lost. Unable to restore inode 43778050 (file.43778050): Space has been reallocated. [root@DB1 extundelete-0.2.4]# ls acinclude.m4 autogen.sh config.h.in config.status configure.ac install-sh Makefile Makefile.in aclocal.m4 config.h config.log configure depcomp LICENSE Makefile.am missing [root@DB1 extundelete-0.2.4]# cd RECOVERED_FILES/ [root@DB1 RECOVERED_FILES]# ls app file.43778051 oracle oraInventory [root@DB1 RECOVERED_FILES]# cd app [root@DB1 app]# ls admin cfgtoollogs diag oracle oradata orcl ORCL [root@DB1 app]# cd oradata [root@DB1 oradata]# ls orcl [root@DB1 oradata]# cd orcl [root@DB1 orcl]# ls control01.ctl redo01.log redo02.log redo03.log sysaux01.dbf system01.dbf undotbs01.dbf users01.dbf [root@DB1 orcl]# ls -ltr total 2908776 -rw-r--r--. 1 root root 734011392 Nov 18 02:06 system01.dbf -rw-r--r--. 1 root root 1069555712 Nov 18 02:06 sysaux01.dbf -rw-r--r--. 1 root root 120594432 Nov 18 02:06 undotbs01.dbf -rw-r--r--. 1 root root 887365632 Nov 18 02:06 users01.dbf -rw-r--r--. 1 root root 9748480 Nov 18 02:06 control01.ctl -rw-r--r--. 1 root root 52429312 Nov 18 02:06 redo01.log -rw-r--r--. 1 root root 52429312 Nov 18 02:06 redo02.log -rw-r--r--. 1 root root 52429312 Nov 18 02:06 redo03.log [root@DB1 orcl]#
再次提醒各位:数据库备份重于一切,防天灾的同时还要防人灾,也希望圈子里面以后不要听到类似故障.