02-19-2015
Increasing the filesystem size
Hi Guys
We have a VM machine, now I want to increase the size of the filesystem.
We are running RHEL6 O/S.
I have filesystem that is 500GB I want to increase that filesystem to 1.5 TB.
The guy who manages the VM increased the size on the VM machine, now how do I make sure that the changes reflect on the O/S?
Thanks in advance...
Please Help!!!
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LEARN ABOUT DEBIAN
mkfs.gfs
mkfs.gfs(8) System Manager's Manual mkfs.gfs(8)
NAME
mkfs.gfs - Make a GFS filesystem
SYNOPSIS
mkfs.gfs [OPTION]... DEVICE
DESCRIPTION
mkfs.gfs is used to create a Global File System.
OPTIONS
-b BlockSize
Set the filesystem block size to BlockSize (must be a power of two). The minimum block size is 512. The FS block size cannot
exceed the machine's memory page size. On the most architectures (i386, x86_64, s390, s390x), the memory page size is 4096 bytes.
On other architectures it may be bigger. The default block size is 4096 bytes. In general, GFS filesystems should not deviate from
the default value.
-D Enable debugging output.
-h Print out a help message describing available options, then exit.
-J MegaBytes
The size of the journals in Megabytes. The default journal size is 128 megabytes. The minimum size is 32 megabytes.
-j Number
The number of journals for mkfs.gfs to create. You need at least one journal per machine that will mount the filesystem.
-O This option prevents mkfs.gfs from asking for confirmation before writing the filesystem.
-p LockProtoName
LockProtoName is the name of the locking protocol to use. The locking protocol should be lock_dlm for a clustered file system or
if you are using GFS as a local filesystem (1 node only), you can specify the lock_nolock protocol.
-q Be quiet. Don't print anything.
-r MegaBytes
mkfs.gfs will try to make Resource Groups (RGs) about this big. Minimum RG size is 32 MB. Maximum RG size is 2048 MB. A large RG
size may increase performance on very large file systems. If not specified, mkfs.gfs will choose the RG size based on the size of
the file system: average size file systems will have 256 MB RGs, and bigger file systems will have bigger RGs for better perfor-
mance.
-s Blocks
Journal segment size in filesystem blocks. This value must be at least two and not large enough to produce a segment size greater
than 4MB.
-t LockTableName
The lock table field appropriate to the lock module you're using. It is clustername:fsname. Clustername must match that in clus-
ter.conf; only members of this cluster are permitted to use this file system. Fsname is a unique file system name used to distin-
guish this GFS file system from others created (1 to 16 characters). Lock_nolock doesn't use this field.
-V Print program version information, then exit.
EXAMPLE
mkfs.gfs -t mycluster:mygfs -p lock_dlm -j 2 /dev/vg0/mygfs
This will make a Global File System on the block device "/dev/vg0/mygfs". It will belong to "mycluster" and register itself as
wanting locking for "mygfs". It will use DLM for locking and make two journals.
mkfs.gfs(8)