Amount of disk space lost to formatting?

David Hubbard dhubbard at dino.hostasaurus.com
Fri Apr 14 10:56:20 CDT 2006


Oh, no there's files on there, but not that many.  Thre's 2744
currently; mostly small.  But even if they all got unlucky and
crossed into the next block and wasted most of it, that shouldn't
make 4 GB. :-)

David 

> -----Original Message-----
> From: Eric Warnke [mailto:ericew at gmail.com] 
> Sent: Friday, April 14, 2006 11:49 AM
> To: David Hubbard
> Cc: linux-poweredge at dell.com
> Subject: Re: Amount of disk space lost to formatting?
> 
> 73000000000 ( 73GB to the drive manufactireres ) = 
> 73000000000/1024/1024/1024 = 67.9 GiB to the computer.  They 
> are the same ammount and no loss of space occured.
> 
> the 104Mb used is the default ext3 journal.
> 
> The 4GB is confising though. I have never seen anything like 
> that.  ls -alR /mountpoint does not reveal *any* files? 
> 
> Cheers,
> Eric
> 
> 
> On 4/14/06, David Hubbard <dhubbard at dino.hostasaurus.com> wrote: 
> 
> 	I just threw two 73 GB drives in a PE2850 and mirrored
> 	them on the PERC.  Shows up to the OS as /dev/sdb since 
> 	it's the second logical drive:
> 	
> 	SCSI device sdb: 143114240 512-byte hdwr sectors (73274 MB)
> 	
> 	After partitioning and formatting though, I seem to have lost
> 	more room than I had expected.  fdisk shows:
> 	
> 	
> 	   Device Boot      Start         End      Blocks   Id  System
> 	/dev/sdb1               1        8908    71553478+  83  Linux
> 	
> 	
> 	But df shows:
> 	
> 	Filesystem            Size  Used Avail Use% Mounted on 
> 	/dev/sdb1              68G  104M   64G   1% /data
> 	
> 	
> 	73 GB drives down to 68 GB formatted is bad enough, but there
> 	seems to be another 4 GB missing over what's in use?  I
> 	used the default inode counts:
> 	
> 	Filesystem            Inodes   IUsed   IFree IUse% Mounted on
> 	/dev/sdb1            8945664    1837 8943827    1% /data
> 	
> 	Is that much being tied up in the inodes?
> 	
> 	Thanks,
> 	
> 	Dave
> 	
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