标签：cal text realtime ica xfs -bash src 有关 ima
1、现象：日志服务器当初考虑不周，分区划分不太合理：
2、目标：将/home磁盘空间缩减 并将新的磁盘分区扩充到/根目录
卸载/home分区并压缩分区
卸载/home时 提示目标忙，fuser -m /home查看谁用/home时提示没有fuser命令
[root@localhost zabbix]# umount /home umount: /home：目标忙。 (有些情况下通过 lsof(8) 或 fuser(1) 可以 找到有关使用该设备的进程的有用信息) [root@localhost zabbix]# fuser -m /home -bash: fuser: 未找到命令 解决没有fuser命令的问题： 在CentOS / RHEL 7上找不到fuser命令 -bash: fuser: command not found yum install psmisc
fuser -m /home //继续查找谁在用/home
kill -9 11757 //停止进程
umount /home //卸载/home文件系统
压缩分区：resize2fs -p /dev/mapper/centos-home 100G
确认是xfs格式系统
cat /etc/fstab|grep centos-home
xfs文件系统扩容必须安装 xfsdump工具 yum install xfsdump -y 减少/home空间到100GB： lvreduce -L 100G /dev/mapper/centos-home [root@localhost ~]# lvreduce -L 100G /dev/mapper/centos-home WARNING: Reducing active logical volume to 100.00 GiB THIS MAY DESTROY YOUR DATA (filesystem etc.) Do you really want to reduce home? [y/n]: y Reducing logical volume home to 100.00 GiB Logical volume home successfully resized [root@localhost ~]#
增大根目录
lvextend -l +100%FREE /dev/mapper/centos-root
[root@localhost ~]# lvextend -l +100%FREE /dev/mapper/centos-root
Extending logical volume root to 167.37 GiB
Logical volume root successfully resized
延伸/目录空间
xfs_growfs /dev/mapper/centos-root [root@localhost ~]# xfs_growfs /dev/mapper/centos-root meta-data=/dev/mapper/centos-root isize=256 agcount=4, agsize=3276800 blks = sectsz=512 attr=2, projid32bit=1 = crc=0 data = bsize=4096 blocks=13107200, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=0 log =internal bsize=4096 blocks=6400, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 data blocks changed from 13107200 to 43874304 [root@localhost ~]#
重新挂载/home
[root@localhost ~]# mount /home
mount: /dev/mapper/centos-home：不能读超级块
必须格式化/home分区，才能挂载----所以缩减/home分区之前必须备份/home的内容（切记！！！）
mkfs.xfs -f /dev/mapper/centos-home [root@localhost ~]# mkfs.xfs -f /dev/mapper/centos-home meta-data=/dev/mapper/centos-home isize=256 agcount=4, agsize=6553600 blks = sectsz=512 attr=2, projid32bit=1 = crc=0 data = bsize=4096 blocks=26214400, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=0 log =internal log bsize=4096 blocks=12800, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0
重新挂载mount /home
标签：cal text realtime ica xfs -bash src 有关 ima
原文地址：https://www.cnblogs.com/kcxg/p/13992891.html
