Dennis,
If you're specifying a blocksize of 4096 on both the dasdfmt and
mke2fs/mkreiserfs/mkwhatever command, then you're getting as much as you're
going to get, unless you modify the reserved percentage. UNIX/Linux file
systems have some additional overhead in the form of "inodes" that take up
some of the space.
The "reserved percentage" is by default 5% of the number of allocated
blocks, and only someone running with uid=0 can allocate them. You can use
the tune2fs -m parameter to lower that, but you don't want to set it to
zero.
For example:
tune2fs -m 1 /dev/dasda1
Will set the amount of reserved space to 1%.
Mark Post
-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Dennis
Schaffer
Sent: Tuesday, March 23, 2004 7:11 PM
To: [EMAIL PROTECTED]
Subject: 3390-3 Dasd Capacity on SLES8 ext3
Hi,
I'm new to the Linux environment so I hope you'll bear with me on a dasd
capacity question.
When we build a filesystem on a 3390-3 volume, the end result is about 2.2Gb
of usable space. Coming from the z/OS world, we are accustomed to getting
2.7Gb from a 3390-3 volume.
Is it reasonable to expect that we should we be able to get closer to 2.7Gb
on Linux? Are there dasdfmt/fdasd/mkfs options I should be using to ensure
a higher capacity?
Thanks in advance for your input.
Dennis Schaffer
Mutual of Omaha
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