扩充_删除_管理LVM-Linux.docx

使用lvextend-LsizeLVNAME增大一个逻辑卷的大小。[root@NEWLFSmnt]#lvextend-L+1G/dev/lvm_vg/lv_homeExtendinglogicalvolumelv_hometo3.00GBLogicalvolumelv_homesuccessfullyresized[root@NEWLFSmnt]#-L+1G为lv_home加上1G空间。或者使用这种格式：[root@NEWLFSmnt]#lvextend-L3G/dev/lvm_vg/lv_home指定lv_home更改后的大小,效果相同。
更改逻辑卷大小后，还应该更改文件系统的大小，保持一致：[root@NEWLFSmnt]#resize_reiserfs-f/dev/lvm_vg/lv_home
代码:resize_reiserfs3.6.1Array(2003www.namesys.com)ReiserFSreport:blocksize40Array6blockcount786432(524288)freeblocks7781Array7(516061)bitmapblockcount24(16)Syncing..doneresize_reiserfs:Resizingfinishedsuccessfully.[root@NEWLFSmnt]dfFilesystemSizeUsedAvailUse%Mountedon/dev/md05.4G2.8G2.7G51%//dev/hda16.4G4.0G2.5G62%/mnt/C/dev/hda625G22G3.6G86%/mnt/E/dev/hda7Array.7G3.7G5.6G40%/mnt/lfs/dev/mapper/lvm_vg-lv_home3.0G33M3.0G2%/mnt/lvm_home[root@NEWLFSmnt]#成功的将lvm_home扩展到了3G，没有重新启动，并且没有卸载文件系统。ReiserFS真是好用！^_^当然，ReiserFS也允许卸载文件系统后resize,使用下列命令：[root@NEWLFSmnt]#umount/dev/lvm_vg/lv_home卸载文件系统[root@NEWLFSmnt]#resize_reiserfs/dev/lvm_vg/lv_home调整大小，与上面不同的地方是没有-f参数.[root@NEWLFSmnt]#mount-treiserfs/dev/lvm_vg/lv_homelvm_home/重新挂载上.EXT2/3安装，扩展：[root@NEWLFSmnt]#lvcreate-L2G-nlv_optlvm_vgLogicalvolume"lv_opt"created分出一块2G名字为lv_opt的逻辑卷[root@NEWLFSmnt]#mke2fs-j/dev/lvm_vg/lv_opt
代码:mke2fs1.35(28-Feb-2004)Filesystemlabel=OStype:LinuxBlocksize=40Array6(log=2)Fragmentsize=40Array6(log=2)262144inodes,524288blocks26214blocks(5.00%)reservedforthesuperuserFirstdatablock=016blockgroups32768blockspergroup,32768fragmentspergroup16384inodespergroupSuperblockbackupsstoredonblocks:32768,Array8304,163840,22Array376,2Array4Array12Writinginodetables:doneCreatingjournal(81Array2blocks):doneWritingsuperblocksandfilesystemaccountinginformation:doneThisfilesystemwillbeautomaticallycheckedevery35mountsor180days,whichevercomesfirst.Usetune2fs-cor-itooverride.创建ext3文件系统[root@NEWLFSmnt]#mkdirlvm_opt[root@NEWLFSmnt]#mount-text3/dev/lvm_vg/lv_optlvm_opt/创建挂载点，挂载上。[root@NEWLFSmnt]#df
代码:FilesystemSizeUsedAvailUse%Mounted............../dev/mapper/lvm_vg-lv_home3.