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Full Discussion: os block size
Special Forums Hardware Filesystems, Disks and Memory os block size Post 29723 by Kelam_Magnus on Thursday 10th of October 2002 03:45:25 PM
Old 10-10-2002
I answered part of your question on the other post for the same topic.

Here is a site that may help you tremendously. Look in chapter 4.
http://www.redbooks.ibm.com/SG245139/5139fm.htm

For most OSs, I believe I can say that 4mb is the default size for OS filesystems. To see your block size, you should be able to run a command on the volumes/slices. On HPUX it is something like "vgdisplay -v /dev/vg01/lvol". The information at the top will show it. Do a "man -k block" to find your command in your man pages.

You can set the blocksize when you create new filesystems. It can't be changed once you have created a volume/filesystem. You would have to backup the data and destroy and recreate the filesystem to change the block size.

You will have to create new filesystems to migrate data to or backup and recreate the ones you have.

Last edited by Kelam_Magnus; 10-10-2002 at 04:52 PM..
 

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virtual-filesystems(7)					 Miscellaneous Information Manual				    virtual-filesystems(7)

NAME
virtual-filesystems - event signalling that virtual filesystems have been mounted SYNOPSIS
virtual-filesystems [ENV]... DESCRIPTION
The virtual-filesystems event is generated by the mountall(8) daemon after it has mounted all virtual filesystems listed in fstab(5). mountall(8) emits this event as an informational signal, services and tasks started or stopped by this event will do so in parallel with other activity. This event is typically used by services that must be started in order to mount other filesystems. When this event occurs, common filesys- tems such as /usr may not be mounted. For most normal services the filesystem(7) event is sufficient. EXAMPLE
A service that wishes to be running once virtual filesystems are mounted might use: start on virtual-filesystems SEE ALSO
mounting(7) mounted(7) local-filesystems(7) remote-filesystems(7) all-swaps(7) filesystem(7) mountall 2009-12-21 virtual-filesystems(7)
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