我有以下问题.我已经为我的ubuntu机器添加了20GB(从20到40GB).现在这是我从fdisk -l命令得到的：
disk /dev/sda: 42.9 GB,42949672960 bytes 255 heads,63 sectors/track,5221 cylinders,total 83886080 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes disk identifier: 0x000881a0 Device Boot Start End Blocks Id System /dev/sda1 * 2048 499711 248832 83 Linux /dev/sda2 501758 41940991 20719617 5 Extended /dev/sda5 501760 41940991 20719616 8e Linux LVM disk /dev/mapper/zabbix-root: 20.1 GB,20124270592 bytes 255 heads,2446 cylinders,total 39305216 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes disk identifier: 0x00000000 disk /dev/mapper/zabbix-root doesn't contain a valid partition table disk /dev/mapper/zabbix-swap_1: 1069 MB,1069547520 bytes 255 heads,130 cylinders,total 2088960 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes disk identifier: 0x00000000
我尝试用这个命令扩展它：
lvextend -L+20G /dev/mapper/zabbix-root
我得到了关注
Extending logical volume root to 38.74 GiB Insufficient free space: 5120 extents needed,but only 5 available
有人可以帮忙做些什么来扩展我的根20gb更多？
谢谢
UPDATE
好吧,我用cfdisk然后pvcreate和vgextend,然后使用lvextend,现在我可以使用vgdisplay命令在我的volumegroup中看到40gb.
接下来的问题是.如何刷新df等命令的信息？与df -h在这里仍然只有19gb …从lvdisplay,vgdisplay,fdisk -l和df -h发送输出.
fdisk -l：
disk /dev/sda: 42.9 GB,total 83886080 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes disk identifier: 0x000881a0 Device Boot Start End Blocks Id System /dev/sda1 * 2048 499711 248832 83 Linux /dev/sda2 501758 83886079 41692161 5 Extended /dev/sda5 501760 41940991 20719616 8e Linux LVM /dev/sda6 41941055 83886079 20972512+ 83 Linux disk /dev/mapper/zabbix-root: 41.6 GB,41599107072 bytes 255 heads,5057 cylinders,total 81248256 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes disk identifier: 0x00000000 disk /dev/mapper/zabbix-root doesn't contain a valid partition table disk /dev/mapper/zabbix-swap_1: 1069 MB,total 2088960 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes disk identifier: 0x00000000 disk /dev/mapper/zabbix-swap_1 doesn't contain a valid partition table
df -h：
Filesystem Size Used Avail Use% Mounted on /dev/mapper/zabbix-root 19G 17G 791M 96% / udev 489M 8.0K 489M 1% /dev tmpfs 200M 280K 199M 1% /run none 5.0M 0 5.0M 0% /run/lock none 498M 0 498M 0% /run/shm /dev/sda1 228M 25M 192M 12% /boot
vgdisplay：
--- Volume group --- VG Name zabbix System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 5 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 2 Max PV 0 Cur PV 2 Act PV 2 VG Size 39.76 GiB PE Size 4.00 MiB Total PE 10178 Alloc PE / Size 10173 / 39.74 GiB Free PE / Size 5 / 20.00 MiB VG UUID d4I8HJ-Rq2h-CPf1-LKFm-Bsam-3Mqe-9e39F3
lvdisplay：
--- Logical volume --- LV Name /dev/zabbix/root VG Name zabbix LV UUID N4NqWB-P6Hr-L51A-q98I-oAE9-qmvu-wHjQxo LV Write Access read/write LV Status available # open 1 LV Size 38.74 GiB Current LE 9918 Segments 3 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 252:0 --- Logical volume --- LV Name /dev/zabbix/swap_1 VG Name zabbix LV UUID jDDTkD-VpZf-BXng-rQDI-HKSc-I8j2-mOY47c LV Write Access read/write LV Status available # open 2 LV Size 1020.00 MiB Current LE 255 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 252:1
pvdisplay：
--- Physical volume --- PV Name /dev/sda5 VG Name zabbix PV Size 19.76 GiB / not usable 2.00 MiB Allocatable yes (but full) PE Size 4.00 MiB Total PE 5058 Free PE 0 Allocated PE 5058 PV UUID g2jnVt-dFQ6-takf-qz8L-QFf4-VAEQ-QYvp3u --- Physical volume --- PV Name /dev/sda6 VG Name zabbix PV Size 20.00 GiB / not usable 992.50 KiB Allocatable yes PE Size 4.00 MiB Total PE 5120 Free PE 5 Allocated PE 5115 PV UUID Il7KFu-rCa9-3sUE-0Hrz-qtyX-s8eL-eLpOGR
所以我明白了.起初我需要在vmware环境中扩大我的磁盘大小.之后,我需要重新扫描我的ubuntu服务器,例如：
echo "- - -" > /sys/class/scsi_host/host#/scan
其中#i必须替换为scsi_host中每个主机的数字.然后我能够通过命令在ubuntu中看到增加的空间：
fdisk -l
在下一步中,我必须使用以下命令准备或格式化该自由空间：
cfdisk /dev/sda
– 你可以根据自己的意愿格式化(也是空格)
现在有一个新的分区. – 在我的情况下：/ dev / sda6
下一步是使用pvcreate进行新分区：
pvcreate /dev/sda6
完成此操作后,只需使用以下命令将其添加到现有卷组：
vgextend vg_name /dev/sda6
现在我们可以使用以下方法扩展逻辑卷：
lvextend -L+20G /dev/zabbix/root
如果现在检查fdisk -l有/ zabbix-root 20GB
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