From: Aaron Morris (aaronmorris@MINDSPRING.COM)
Date: Mon Dec 02 2002 - 13:09:15 EST
This reminds me of a problem I had on Windows systems using FAT16. A
2GB FAT16 filesystem has a 32KB cluster (usually called inodes in unix)
size. A 1KB file wastes space on a filesystem because it makes the
other 31KB of the cluster it occupies unusable. In one circumstance I
saw 1.2GB of files actually taking up 2GB of space because of cluster
size. By converting the filesystem to NTFS (with 4KB cluster size), it
essentially "freed" ~600MB of space. This is more of an attempt at an
explanation than a solution.
You could try and recreate the "/" filesystem with a smaller inode size.
The default inode size for JFS is 4KB.
Barry Deevey wrote:
> Hello again,
>
> We've now managed to boot from mksysb and run fsck on the root filesystem,
> but fsck did not display any problems, but / is still 100% full - I have
> thoroughly checked the system using ls -al and du -s * on root and cannot
> see anything at all that could possibly use up all of the space (as / has
> over 2Gb allocated to it)
>
> Is there anything else we can try before we are forced to restore from
> mksysb???
>
> Cheers,
>
> Barry.
>
>
> -----Original Message-----
> From: Barry Deevey [mailto:Barry.Deevey@SEFAS.CO.UK]
> Sent: Monday, December 02, 2002 7:57 AM
> To: aix-l@Princeton.EDU
> Subject: Re: root filesystem shows 100% full when it isn't
>
>
> Can't seem to find the steps to get to that menu option having booted from
> CD. Can you help?
>
> Barry
>
> -----Original Message-----
> From: Bill Verzal [mailto:Bill_Verzal@BCBSIL.COM]
> Sent: 02 December 2002 15:36
> To: aix-l@Princeton.EDU
> Subject: Re: root filesystem shows 100% full when it isn't
>
>
> "Access a volume group before mounting filesystems" from the maintenance
> menu.
> ----------------------------------------------------------------------------
>
> ----------------------------
>
> Bill Verzal
> Technical Consultant
> Forbes Technical Consulting
> (312) 653-3684
> bill_verzal@bcbsil.com
> billverzal@imcingular.com (Pager)
> 888-428-4025 (Pager)
> MailStop: 27.202B
>
>
>
> "Barry Deevey"
> <Barry.Deevey@SE To: aix-l@Princeton.EDU
> FAS.CO.UK> cc:
> Sent by: "IBM Subject: Re: root filesystem
> shows 100% full when it isn't
> AIX Discussion
> List"
> <aix-l@Princeton
> .EDU>
>
>
> 12/02/2002 09:40
> AM
> Please respond
> to "IBM AIX
> Discussion List"
>
>
>
>
>
>
> I have tried booting into single user mode and running fsck /dev/hd4 (root
> filesystem) but this will not try to fix anything as the filesystem is
> still
> mounted. Can anybody help in explaining how I can run fsck on a root??
>
> Thanks for any replies, they're much appreciated.
>
> -----Original Message-----
> Sent: 02 December 2002 13:14
> To: aix-l@Princeton.EDU
> Subject: root filesystem shows 100% full when it isn't
>
>
> df shows / filesystem as 100% full, but ls and df do not show sufficient
> data to fill it.
>
> Tried a reboot but to no effect.
>
> Any ideas?
>
> John Dunn
> Sefas Innovation Ltd
> 0117 9154267
> www.sefas.com
>
>
>
>
>
>
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-- Aaron W Morris
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