From: Aaron Morris (aaronmorris@MINDSPRING.COM)
Date: Sat Dec 14 2002 - 14:07:50 EST
I believe the reason John's / filesystem was full (if I remember the
posts correctly) was files in a directory that had been mounted over so
he could not see the files without umounting the filesystem.
pSeries AIX Geek wrote:
> I know that this is an old post, but I just had to
> comment.
>
> The reason that his / is 100% full with no seemingly
> large files is because there is a process running
> holding open a file that's been deleted. Using fuser
> (try the -dV or -cx options) will probably find it.
>
> Usually, there isn't THAT much data in /, so the
> benefits of making the nbpi smaller are really
> negligible (plus, you'd EITHER have to hack your
> image.data file ahead of time or use Sysback to
> restore; there's no way to do a FRESH install and
> modify the nbpi on / ).
>
> - pAG
> --- Aaron Morris <aaronmorris@MINDSPRING.COM> wrote:
>
>>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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>>
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>>
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>>
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>>
>>>the
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>>
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>>
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>>
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>>
>>>Mexico.
>>>**********
>>>
>>
>>--
>>Aaron W Morris
>
>
>
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-- Aaron W Morris
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