已有网站开发安卓app,做体彩网站怎么做,学生个人网页制作,做p2p网站的主页模板情况介绍#xff1a;一、由于硬盘或者分区的操作方式其实都一样#xff0c;所以我这里就以分区为例。二、/home分区2.6G#xff0c;由如下pv组成#xff1a;/dev/sda5 100M/dev/sda6 200M/dev/sda7 300M/dev/sda8 400M/dev/sda9 500M/dev/sda10 600M/dev/sda11 500M很碎对吧…情况介绍一、由于硬盘或者分区的操作方式其实都一样所以我这里就以分区为例。二、/home分区2.6G由如下pv组成/dev/sda5 100M/dev/sda6 200M/dev/sda7 300M/dev/sda8 400M/dev/sda9 500M/dev/sda10 600M/dev/sda11 500M很碎对吧?^_^因为测试。三、随机写了一堆文件进去用量达到了2G空闲500M四、准备将sda6这个200M的PV卸掉(卸掉的容量必须小于空闲容量)好了开始具体操作了。卸载分区(缩小操作必须卸载才能进行)umount /home缩小分区e2fsck -f /dev/liuhg_disk/homeresize2fs /dev/liuhg_disk/home 2200M首先将分区缩小到2200M这是为了给sda6腾出空间sda6为200M而我腾出了400M因此应该是足够的。缩小逻辑卷lvreduce -L 2200M /dev/liuhg_disk/home分区缩小了用到的逻辑卷也要随着缩小并查看PV使用的状态pvdisplay -m显示如下--- Physical volume ---PV Name /dev/sda5VG Name liuhg_diskPV Size 103.26 MiB / not usable 3.26 MiBAllocatable yes (but full)PE Size 4.00 MiBTotal PE 25Free PE 0Allocated PE 25PV UUID 5lnx52-b4jc-OOfZ-f2QA-ttdQ-DZeD-Ce3rb3--- Physical Segments ---Physical extent 0 to 24:Logical volume /dev/liuhg_disk/homeLogical extents 0 to 24--- Physical volume ---PV Name /dev/sda6VG Name liuhg_diskPV Size 203.92 MiB / not usable 3.92 MiBAllocatable yes (but full)PE Size 4.00 MiBTotal PE 50Free PE 0 Allocated PE 50 PV UUID S2ane6-nlFG-uSNR-35NP-Yxa6-cXRb-r8E8mK--- Physical Segments ---Physical extent 0 to 49:Logical volume /dev/liuhg_disk/homeLogical extents 25 to 74--- Physical volume ---PV Name /dev/sda7VG Name liuhg_diskPV Size 305.89 MiB / not usable 1.89 MiBAllocatable yesPE Size 4.00 MiBTotal PE 76Free PE 76 Allocated PE 0PV UUID 9CFnlx-CAEw-CSul-Rig9-FiCN-zK0a-oGmTEP--- Physical Segments ---Physical extent 0 to 75:FREE--- Physical volume ---PV Name /dev/sda8VG Name liuhg_diskPV Size 407.87 MiB / not usable 3.87 MiBAllocatable yesPE Size 4.00 MiBTotal PE 101Free PE 60Allocated PE 41PV UUID X0I8p0-x2xr-2xLG-QQD4-jbtS-3C4i-xPn4Bl--- Physical Segments ---Physical extent 0 to 40:Logical volume /dev/liuhg_disk/homeLogical extents 471 to 511Physical extent 41 to 100:FREE--- Physical volume ---PV Name /dev/sda9VG Name liuhg_diskPV Size 509.84 MiB / not usable 1.84 MiBAllocatable yes (but full)PE Size 4.00 MiBTotal PE 127Free PE 0Allocated PE 127PV UUID avJQaA-oMKt-NEoJ-ojBK-2Csc-1dca-1mh6Ue--- Physical Segments ---Physical extent 0 to 126:Logical volume /dev/liuhg_disk/homeLogical extents 225 to 351--- Physical volume ---PV Name /dev/sda10VG Name liuhg_diskPV Size 603.98 MiB / not usable 3.98 MiBAllocatable yes (but full)PE Size 4.00 MiBTotal PE 150Free PE 0Allocated PE 150PV UUID JlMIAF-A49n-M6HA-ZLXf-d8nS-pfZr-YeQsKT--- Physical Segments ---Physical extent 0 to 149:Logical volume /dev/liuhg_disk/homeLogical extents 75 to 224--- Physical volume ---PV Name /dev/sda11VG Name liuhg_diskPV Size 478.47 MiB / not usable 2.47 MiBAllocatable yes (but full)PE Size 4.00 MiBTotal PE 119Free PE 0Allocated PE 119PV UUID xnHJNA-tDVx-dryX-KM1x-g96Y-sptI-9iUOcU--- Physical Segments ---Physical extent 0 to 118:Logical volume /dev/liuhg_disk/homeLogical extents 352 to 470将sda6设置为离线状态pvchange -xn /dev/sda6使用pvdisplay -m显示如下……--- Physical volume ---PV Name /dev/sda6VG Name liuhg_diskPV Size 203.92 MiB / not usable 3.92 MiBAllocatable NO PE Size 4.00 MiBTotal PE 50Free PE 0Allocated PE 50PV UUID S2ane6-nlFG-uSNR-35NP-Yxa6-cXRb-r8E8mK……将sda6的数据移走pvmove -i 1 /dev/sda6-i 1是每1秒钟报告一次数据迁移的进度。[rootliuhg /]# pvmove -i 1 /dev/sda6/dev/sda6: Moved: 38.0%/dev/sda6: Moved: 84.0%/dev/sda6: Moved: 100.0%重新用pvdisplay -m显示如下……--- Physical volume ---PV Name /dev/sda6VG Name liuhg_diskPV Size 203.92 MiB / not usable 3.92 MiBAllocatable NOPE Size 4.00 MiBTotal PE 50Free PE 50 Allocated PE 0PV UUID S2ane6-nlFG-uSNR-35NP-Yxa6-cXRb-r8E8mK……从卷组里把sda6删除:[rootliuhg /]# vgreduce liuhg_disk /dev/sda6Removed /dev/sda6 from volume group liuhg_diskpvdisplay -m再看看吧--- NEW Physical volume --- PV Name /dev/sda6VG Name PV Size 203.92 MiBAllocatable NOPE Size 0Total PE 0Free PE 0Allocated PE 0PV UUID S2ane6-nlFG-uSNR-35NP-Yxa6-cXRb-r8E8mK到此vgdisplay -v能看到已经没有了/dev/sda6了。重新挂载/home[rootliuhg /]# mount /dev/liuhg_disk/home /home[rootliuhg /]# df -hFilesystem Size Used Avail Use% Mounted on/dev/sda1 2.0G 546M 1.3G 30% /tmpfs 504M 0 504M 0% /dev/shm/dev/mapper/liuhg_disk-home2.2G 1.8G 42M 98% /home进去看看数据一个都没丢。