Veritas Storage Foundation for Oracle 5.0 Administrator's Guide, HP-UX 11i v3, Second Edition, December 2008

It is possible to have a file system block size that is smaller than the database
block size because the database block-size limit can be bigger than the file system
block size. It is fine if the file system block size is smaller than the database block
size because VxFS will not perform multiple I/O operations for each database I/O
operation. VxFS is capable of performing I/Os with multiple blocks. For example,
if your database block size is 32K and your file system block size is 8k, VxFS can
put four 8K blocks together to perform one 32K database I/O operation.
When creating the file system, set the number of file system blocks in the intent
log so that the log size is 16MB. For example, if the file system block size is 8K
(that is, 8192), it will take 2000 blocks to make a 16MB log (2000 x 8192 = ~16MB).
If the file system block size is 4K (that is, 4096), then twice as many blocks as in
the 8K case would need to be allocated (4000 in this example).
Creating a VxFS file system
Always specify vxfs as the file system type to take advantage of Quick I/O, Storage
Rollback, online administration, fast recovery of the VxFS file system, and superior
reliability features.
Before creating a file system, see the following notes:
■ See the mkfs(1M) and mkfs_vxfs(1M) manual pages for more
information about the options and variables available for use with
the mkfs command.
■ See the mount(1M) and mount_vxfs(1M) manual pages for more
information about mount settings.
Usage notes
To create a VxFS file system on an existing volume
◆
Use the mkfs command as follows:
# /usr/sbin/mkfs -F vxfs [generic_options] \
[-o specific_options] special [size]
where:
■ vxfs is the file system type
■ generic_options are the options common to most file systems
■ specific_options are options specific to the VxFS file system
■ special is the full path name of the raw character device or VxVM volume
on which to create the file system (for example, /dev/vx/rdsk/PRODdg/
db01)
Setting up databases
Creating a VxFS file system
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