df -Th lsblk fdisk /dev/sdb lsblk pvcreate /dev/sdb1 pvdisplay vgdisplay vgextend centos /dev/sdb1 vgdisplay pvdisplay lvdisplay lvextend -l +100%FREE /dev/centos/root df -Th xfs_growfs /dev/centos/root df -Th
实例：
[root@iser-monitor01 alertmanager]# df -Th Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/centos-root xfs 50G 15G 36G 29% / devtmpfs devtmpfs 16G 0 16G 0% /dev tmpfs tmpfs 16G 0 16G 0% /dev/shm tmpfs tmpfs 16G 8.4M 16G 1% /run tmpfs tmpfs 16G 0 16G 0% /sys/fs/cgroup /dev/sda2 xfs 1014M 153M 862M 16% /boot /dev/sda1 vfat 200M 9.9M 190M 5% /boot/efi /dev/mapper/centos-opt xfs 15G 33M 15G 1% /opt /dev/mapper/centos-home xfs 8.8G 34M 8.8G 1% /home /dev/mapper/centos-var xfs 25G 901M 25G 4% /var tmpfs tmpfs 3.2G 0 3.2G 0% /run/user/0 [root@iser-monitor01 alertmanager]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 100G 0 disk ├─sda1 8:1 0 200M 0 part /boot/efi ├─sda2 8:2 0 1G 0 part /boot └─sda3 8:3 0 98.8G 0 part ├─centos-root 253:0 0 50G 0 lvm / ├─centos-home 253:1 0 8.8G 0 lvm /home ├─centos-var 253:2 0 25G 0 lvm /var └─centos-opt 253:3 0 15G 0 lvm /opt sdb 8:16 0 1000G 0 disk sr0 11:0 1 1024M 0 rom [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# fdisk /dev/sdb Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Device does not contain a recognized partition table Building a new DOS disklabel with disk identifier 0x47379b16. The device presents a logical sector size that is smaller than the physical sector size. Aligning to a physical sector (or optimal I/O) size boundary is recommended, or performance may be impacted. Command (m for help): n Partition type: p primary (0 primary, 0 extended, 4 free) e extended Select (default p): Using default response p Partition number (1-4, default 1): First sector (2048-2097151999, default 2048): Using default value 2048 Last sector, +sectors or +size{K,M,G} (2048-2097151999, default 2097151999): Using default value 2097151999 Partition 1 of type Linux and of size 1000 GiB is set Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. Syncing disks. [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 100G 0 disk ├─sda1 8:1 0 200M 0 part /boot/efi ├─sda2 8:2 0 1G 0 part /boot └─sda3 8:3 0 98.8G 0 part ├─centos-root 253:0 0 50G 0 lvm / ├─centos-home 253:1 0 8.8G 0 lvm /home ├─centos-var 253:2 0 25G 0 lvm /var └─centos-opt 253:3 0 15G 0 lvm /opt sdb 8:16 0 1000G 0 disk └─sdb1 8:17 0 1000G 0 part sr0 11:0 1 1024M 0 rom [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# pvcreate /dev/sdb1 Physical volume "/dev/sdb1" successfully created. [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# pvdisplay --- Physical volume --- PV Name /dev/sda3 VG Name centos PV Size 98.80 GiB / not usable 2.00 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 25293 Free PE 0 Allocated PE 25293 PV UUID ODqte0-9QiK-RlxG-8xb0-aYvJ-yfHT-KcR865 "/dev/sdb1" is a new physical volume of "<1000.00 GiB" --- NEW Physical volume --- PV Name /dev/sdb1 VG Name PV Size <1000.00 GiB Allocatable NO PE Size 0 Total PE 0 Free PE 0 Allocated PE 0 PV UUID Fv2FF9-TUW9-lZID-NFO3-ukAI-ECh3-mNXtQL [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# vgdisplay --- Volume group --- VG Name centos System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 5 VG Access read/write VG Status resizable MAX LV 0 Cur LV 4 Open LV 4 Max PV 0 Cur PV 1 Act PV 1 VG Size 98.80 GiB PE Size 4.00 MiB Total PE 25293 Alloc PE / Size 25293 / 98.80 GiB Free PE / Size 0 / 0 VG UUID t7qcU4-pN1v-DaeN-keN1-oWDI-4tLY-epo0Xg [root@iser-monitor01 alertmanager]# vgextend centos /dev/sdb1 Volume group "centos" successfully extended [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# vgdisplay --- Volume group --- VG Name centos System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 6 VG Access read/write VG Status resizable MAX LV 0 Cur LV 4 Open LV 4 Max PV 0 Cur PV 2 Act PV 2 VG Size 1.07 TiB PE Size 4.00 MiB Total PE 281292 Alloc PE / Size 25293 / 98.80 GiB Free PE / Size 255999 / <1000.00 GiB VG UUID t7qcU4-pN1v-DaeN-keN1-oWDI-4tLY-epo0Xg [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# pvdisplay --- Physical volume --- PV Name /dev/sda3 VG Name centos PV Size 98.80 GiB / not usable 2.00 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 25293 Free PE 0 Allocated PE 25293 PV UUID ODqte0-9QiK-RlxG-8xb0-aYvJ-yfHT-KcR865 --- Physical volume --- PV Name /dev/sdb1 VG Name centos PV Size <1000.00 GiB / not usable 3.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 255999 Free PE 255999 Allocated PE 0 PV UUID Fv2FF9-TUW9-lZID-NFO3-ukAI-ECh3-mNXtQL [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# lvdisplay --- Logical volume --- LV Path /dev/centos/root LV Name root VG Name centos LV UUID gleQmV-qoeH-ZHz3-HSUG-IvDh-a77j-mIMkDn LV Write Access read/write LV Creation host, time localhost, 2019-12-19 16:17:52 +0800 LV Status available # open 1 LV Size 50.00 GiB Current LE 12800 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 8192 Block device 253:0 --- Logical volume --- LV Path /dev/centos/home LV Name home VG Name centos LV UUID V63xl5-dp70-FIlc-rjHm-93nm-LoJz-wWfi36 LV Write Access read/write LV Creation host, time localhost, 2019-12-19 16:17:55 +0800 LV Status available # open 1 LV Size 8.80 GiB Current LE 2253 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 8192 Block device 253:1 --- Logical volume --- LV Path /dev/centos/var LV Name var VG Name centos LV UUID WqXYBN-MpWJ-WuIv-06oh-CDhp-f38c-14W587 LV Write Access read/write LV Creation host, time localhost, 2019-12-19 16:17:56 +0800 LV Status available # open 1 LV Size 25.00 GiB Current LE 6400 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 8192 Block device 253:2 --- Logical volume --- LV Path /dev/centos/opt LV Name opt VG Name centos LV UUID BDLVE6-sYIw-a4yD-Vodu-83Fl-UyAi-sgixFk LV Write Access read/write LV Creation host, time localhost, 2019-12-19 16:17:58 +0800 LV Status available # open 1 LV Size 15.00 GiB Current LE 3840 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 8192 Block device 253:3 [root@iser-monitor01 alertmanager]# lvextend -l +100%FREE /dev/centos/root Size of logical volume centos/root changed from 50.00 GiB (12800 extents) to <1.03 TiB (268799 extents). Logical volume centos/root successfully resized. [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# df -Th Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/centos-root xfs 50G 15G 36G 29% / devtmpfs devtmpfs 16G 0 16G 0% /dev tmpfs tmpfs 16G 0 16G 0% /dev/shm tmpfs tmpfs 16G 8.4M 16G 1% /run tmpfs tmpfs 16G 0 16G 0% /sys/fs/cgroup /dev/sda2 xfs 1014M 153M 862M 16% /boot /dev/sda1 vfat 200M 9.9M 190M 5% /boot/efi /dev/mapper/centos-opt xfs 15G 33M 15G 1% /opt /dev/mapper/centos-home xfs 8.8G 34M 8.8G 1% /home /dev/mapper/centos-var xfs 25G 901M 25G 4% /var tmpfs tmpfs 3.2G 0 3.2G 0% /run/user/0 [root@iser-monitor01 alertmanager]# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 100G 0 disk ├─sda1 8:1 0 200M 0 part /boot/efi ├─sda2 8:2 0 1G 0 part /boot └─sda3 8:3 0 98.8G 0 part ├─centos-root 253:0 0 1T 0 lvm / ├─centos-home 253:1 0 8.8G 0 lvm /home ├─centos-var 253:2 0 25G 0 lvm /var └─centos-opt 253:3 0 15G 0 lvm /opt sdb 8:16 0 1000G 0 disk └─sdb1 8:17 0 1000G 0 part └─centos-root 253:0 0 1T 0 lvm / sr0 11:0 1 1024M 0 rom [root@iser-monitor01 alertmanager]# xfs_growfs /dev/centos/root meta-data=/dev/mapper/centos-root isize=512 agcount=4, agsize=3276800 blks = sectsz=4096 attr=2, projid32bit=1 = crc=1 finobt=0 spinodes=0 data = bsize=4096 blocks=13107200, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal bsize=4096 blocks=6400, version=2 = sectsz=4096 sunit=1 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 data blocks changed from 13107200 to 275250176 [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# [root@iser-monitor01 alertmanager]# df -Th Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/centos-root xfs 1.1T 15G 1.1T 2% / devtmpfs devtmpfs 16G 0 16G 0% /dev tmpfs tmpfs 16G 0 16G 0% /dev/shm tmpfs tmpfs 16G 8.4M 16G 1% /run tmpfs tmpfs 16G 0 16G 0% /sys/fs/cgroup /dev/sda2 xfs 1014M 153M 862M 16% /boot /dev/sda1 vfat 200M 9.9M 190M 5% /boot/efi /dev/mapper/centos-opt xfs 15G 33M 15G 1% /opt /dev/mapper/centos-home xfs 8.8G 34M 8.8G 1% /home /dev/mapper/centos-var xfs 25G 901M 25G 4% /var tmpfs tmpfs 3.2G 0 3.2G 0% /run/user/0 [root@iser-monitor01 alertmanager]#