True, but not in this case.  Any journal is going to be more than 1M in
size.  Still, I should have mentioned it so that he would have not been
surprised by further "loss" when he moves to a journaling file system.
Thanks for catching that.

And Alan, you _do_ want to use a journaling file system, especially with a
20GB one.  If your system comes down improperly without a journal, you'll
spend a _very_ long time doing an fsck when you reboot again.  The time
required will only get longer as you add more space to the file system.


Mark Post

-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of
Little, Chris
Sent: Friday, September 10, 2004 11:57 AM
To: [EMAIL PROTECTED]
Subject: Re: Where has my space gone ?


Also if you formatted as a journalled filesystem (ext3,
reiser,jfs,xfs,etc.fs) you will lose space to you journal.

-----Original Message-----
From: Post, Mark K [mailto:[EMAIL PROTECTED]
Sent: Friday, September 10, 2004 10:31 AM
To: [EMAIL PROTECTED]
Subject: Re: Where has my space gone ?


A lot of that is in formatting and file system overhead.  For the last one,
df command is showing you how much space is available for a non-privileged
user.  By default 5% of the space is reserved for use by root.  That can be
changed via the tune2fs command to something more reasonable for such a
large file system.


Mark Post

-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Levy,
Alan
Sent: Friday, September 10, 2004 11:21 AM
To: [EMAIL PROTECTED]
Subject: Where has my space gone ?


I set up an LVM with over 30 model 9's and I seem to lose disk space as I go
on.



When I do a cat on /proc/dasd/devices, it tells me that each of the volumes
has 7.042G of space.

When I created the LVM, it told me that each volume has 6.88G of space (what
happened to 7.042) ?

When I do a DF -m command, it tells me that I have 203221M, 1M used and
192898M available. This does not add up (203221 - 1 = 192898 ??).

When I do a DF command, it tells me that I have 208097872 blocks, 119036
used and 197408084 available (still does not compute !!!).



Where did all of my space go ???

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