lvm磁盘扩容
Posted mark-yi
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LVM实现新挂载磁盘扩容到原有目录
1 #查看磁盘 2 fdisk -l 3 #创建pv 4 pvcreate /dev/sdb 5 [root@VM-67-49 ~]# pvcreate /dev/sdb 6 Physical volume "/dev/sdb" successfully created. 7 [root@VM-67-49 ~]# pvdisplay 8 --- Physical volume --- 9 PV Name /dev/sda2 10 VG Name centos 11 PV Size 29.51 GiB / not usable 3.00 MiB 12 Allocatable yes 13 PE Size 4.00 MiB 14 Total PE 7554 15 Free PE 10 16 Allocated PE 7544 17 PV UUID jfRAJl-pnUs-8lXi-1F37-IX3t-Nq8S-RdtQvq 18 19 "/dev/sdb" is a new physical volume of "100.00 GiB" 20 --- NEW Physical volume --- 21 PV Name /dev/sdb 22 VG Name 23 PV Size 100.00 GiB 24 Allocatable NO 25 PE Size 0 26 Total PE 0 27 Free PE 0 28 Allocated PE 0 29 PV UUID ggiAwS-NizD-1liX-7b5i-fqpR-ZKL8-t8aZqD 30 #查看VG 31 [root@VM-67-49 ~]# vgdisplay 32 --- Volume group --- 33 VG Name centos 34 System ID 35 Format lvm2 36 Metadata Areas 2 37 Metadata Sequence No 6 38 VG Access read/write 39 VG Status resizable 40 MAX LV 0 41 Cur LV 2 42 Open LV 2 43 Max PV 0 44 Cur PV 2 45 Act PV 2 46 VG Size 129.50 GiB 47 PE Size 4.00 MiB 48 Total PE 33153 49 Alloc PE / Size 33153 / 129.50 GiB 50 Free PE / Size 0 / 0 51 VG UUID Y9ksOO-scOb-2VAn-bGUB-vX9U-oVee-mPt59q 52 [root@VM-66-82 ~]# vgextend centos /dev/sdb 53 Volume group "centos" successfully extended 54 [root@VM-66-82 ~]# lvextend -l +100%FREE /dev/mapper/centos-root 55 Size of logical volume centos/root changed from 26.51 GiB (6786 extents) to 126.50 GiB (32385 extents). 56 Logical volume centos/root successfully resized. 57 #创建vg 58 lvextend -l +100%FREE /dev/mapper/centos-root 59 #查看文件系统 60 [root@VM-67-49 ~]# df -T 61 Filesystem Type 1K-blocks Used Available Use% Mounted on 62 /dev/mapper/centos-root xfs 27740944 9828872 17912072 36% / 63 devtmpfs devtmpfs 3994572 0 3994572 0% /dev 64 tmpfs tmpfs 4005240 0 4005240 0% /dev/shm 65 tmpfs tmpfs 4005240 403684 3601556 11% /run 66 tmpfs tmpfs 4005240 0 4005240 0% /sys/fs/cgroup 67 /dev/sda1 xfs 508588 191684 316904 38% /boot 68 #是添加的磁盘生效 69 [root@VM-67-49 ~]# xfs_growfs /dev/mapper/centos-root 70 meta-data=/dev/mapper/centos-root isize=256 agcount=4, agsize=1734656 blks 71 = sectsz=512 attr=2, projid32bit=1 72 = crc=0 finobt=0 spinodes=0 73 data = bsize=4096 blocks=6938624, imaxpct=25 74 = sunit=0 swidth=0 blks 75 naming =version 2 bsize=4096 ascii-ci=0 ftype=0 76 log =internal bsize=4096 blocks=3388, version=2 77 = sectsz=512 sunit=0 blks, lazy-count=1 78 realtime =none extsz=4096 blocks=0, rtextents=0 79 data blocks changed from 6938624 to 33162240 80 #验证 81 Filesystem Size Used Avail Use% Mounted on 82 /dev/mapper/centos-root 127G 9.4G 118G 8% / 83 devtmpfs 3.9G 0 3.9G 0% /dev 84 tmpfs 3.9G 0 3.9G 0% /dev/shm 85 tmpfs 3.9G 395M 3.5G 11% /run 86 tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup 87 /dev/sda1 497M 188M 310M 38% /boot
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