标签:crc xfs 根分区 idt log time min size nal
1:.首先查看我们的根分区大小是多少
df -h
文件系统 类型 容量 已用 可用 已用% 挂载点``/dev/mapper/centos-root xfs 18G ``1``.1G 17G ``6``% /``devtmpfs devtmpfs 479M ``0` `479M ``0``% /dev``tmpfs tmpfs 489M ``0` `489M ``0``% /dev/shm``tmpfs tmpfs 489M ``6``.7M 483M ``2``% /run``tmpfs tmpfs 489M ``0` `489M ``0``% /sys/fs/cgroup``/dev/sda1 xfs 497M 125M 373M ``25``% /boot``tmpfs tmpfs 98M ``0` `98M ``0``% /run/user/``0
2:在虚拟机中添加一块物理的磁盘,重起虚拟机。
3:查看磁盘编号
ls /dev/sd*
/dev/sda` `/dev/sda1` `/dev/sda2` `/dev/sdb
4:创建pv
pvcreate /dev/sdb
Physical volume ``"/dev/sdb"` `successfully created
5:把pv加入vg中,相当于扩充vg的大小
? 先使用vgs查看vg组
vgs
VG #PV #LV #SN Attr VSize VFree
centos 2 2 0 wz--n- 59.50g 20.04g
扩展vg,使用vgextend命令
vgextend centos /dev/sdb
6 :我们成功把vg卷扩展了,在用vgs查看一下
vgs
VG ``#PV #LV #SN Attr VSize VFree
``centos 2 2 0 wz--n- 39.50g 20.04g
lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
``root centos -wi-ao---- 17.47g
``swap centos -wi-ao---- 2.00g 虽然我们把vg扩展了,但是lv还没有扩展
7:扩展lv,使用lvextend命令
lvextend -L +20G /dev/mapper/centos-root
Size of logical volume centos``/root` `changed from 17.47 GiB (4472 extents) to 37.47 GiB (9592 extents).
``Logical volume root successfully resized
8: 命令使系统重新读取大小
xfs_growfs /dev/mapper/centos-root
meta-data=``/dev/mapper/centos-root` `isize=256 agcount=4, agsize=1144832 blks
``= sectsz=512 attr=2, projid32bit=1
``= crc=0 finobt=0
data = bsize=4096 blocks=4579328, imaxpct=25
``= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=2560, version=2
``= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 4579328 to 9822208
9:再使用df -h查看
df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/centos-root` `38G 1.1G 37G 3% /
devtmpfs 479M 0 479M 0% ``/dev
tmpfs 489M 0 489M 0% ``/dev/shm
tmpfs 489M 6.7M 483M 2% ``/run
tmpfs 489M 0 489M 0% ``/sys/fs/cgroup
/dev/sda1` `497M 125M 373M 25% ``/boot
tmpfs 98M 0 98M 0% ``/run/user/0
特别提示:vg/pv创建时提示 not found (or ignored by filtering)
激活的新分区,创建vg和pv时提示 Device /dev/sdb1 not found (or ignored by filtering) ,查了下是因为分区没格式化(激活)。
dd if=/dev/urandom of=/dev/sdb bs=512 count=64
SSH执行以上命令即可.
标签:crc xfs 根分区 idt log time min size nal
原文地址:https://www.cnblogs.com/lameclimber/p/11438891.html