Mount extended Hard Disk Partitions using LVM in CentOS VPS

Mount extended Hard Disk Partitions using LVM in CentOS VPS

Linux partitions are LVM, and there are three phases to expand the hard disk: New partition -- New PV -- expand VG -- expand LV
To divide a single hard disk into multiple logical partitions, create a new partition. skip this step if you use the entire hard disk:

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# Http://www.haiyun.mefdisk-l # view the partition to be mounted, usually/dev/xvdbfdisk/dev/xvdb Command (m for help ): n # New partition Command action e extended # extended Partition p primary partition (1-4) # primary Partition p # input p select new primary partition Partition number (1-4 ): 1 # primary Partition Number First cylinder (1-3263, default 1): # Start position of the partition. The default value is Last cylinder (1-3263, default 3263): # End position, by default, Command (m for help): t # specify the partition format Hex code (type L to list codes): 8e # Set it to LVMChanged system type of pa Rtition 1 to 8e (Linux LVM) Command (m for help): w # Save # The partition table has been altered! Quit # exit

Create a PV and expand it to VolGroup00

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Partprobe # re-read the Partition Table pvcreate/dev/xvdb1 # create a new PVvgscan # display the current VG # Reading all physical volumes. this may take a while... # Found volume group "VolGroup00" using metadata type lvm2 # VG name: VolGroup00vgextend VolGroup00/dev/xvdb1 # Extend PV to PG

Check the remaining number of PES in VolGroup00 to prepare the extended LV

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Vgdisplay # --- Volume group --- # VG Name VolGroup00 # VG Name # Free PE/Size 2553/79 .78 GB #2553 indicates the number of remaining PES

View the LV to be extended

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Lvscan # list LV, when the capacity is large, the LV # ACTIVE '/dev/VolGroup00/logvol00' [10.53 GB] inherit # LV # ACTIVE'/dev/VolGroup00/LogVol01 '[ 256.00 MB] inherit

Expand LV

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Lvresize-l + 2553/dev/VolGroup00/LogVol00 #2553 is the number of PES remaining in the VG resize2fs/dev/VolGroup00/LogVol00