[comp.unix.aix] fsck problems on RS/6000

jensen@adobe.com (Freddy Jensen) (12/13/90)

Hi Folks,

  When I run fsck (AIX 3.1.1, RS/6000)  I sometimes get a whole
  bunch of these messages:

Unref file (NOT CLEARED)
Unref file  I=55565  owner=root mode=120777
size=24 mtime=Dec 05 11:34 1990  (NOT RECONNECTED)
Unref file (NOT CLEARED)
Unref file  I=55566  owner=root mode=120777
size=24 mtime=Dec 05 11:34 1990  (NOT RECONNECTED)
Unref file (NOT CLEARED)
Unref file  I=55567  owner=root mode=120777
size=24 mtime=Dec 05 11:34 1990  (NOT RECONNECTED)
Unref file (NOT CLEARED)
Unref file  I=55568  owner=root mode=120777
size=24 mtime=Dec 05 11:34 1990  (NOT RECONNECTED)
Unref file (NOT CLEARED)
Unref file  I=55569  owner=root mode=120777
size=24 mtime=Dec 05 11:34 1990  (NOT RECONNECTED)
    .
    .
    .
   etc.

I have not been able to get fsck to reconnect the seemingly 
lost files (fsck -p /dev/hd4 won't do it).

All suggestions welcome.

Thanks

Freddy

-------------
Freddy Jensen
Display Postscript Group
Adobe Systems Incorporated
1585 Charleston Road, P.O. Box 7900
Mountain View, CA 94039-7900
email: jensen@adobe.com
       adobe!jensen@sun.com
       adobe!jensen@decwrl.dec.com
       ...!{decwrl,sun,uunet,apple}!adobe!jensen
phone: (415) 962-3869 / 961-4400

jensen@adobe.com (Freddy Jensen) (12/15/90)

    >Article 2827 of comp.unix.aix:
    >Path: adobe!jensen
    >From: jensen@adobe.com (Freddy Jensen)
    >Newsgroups: comp.unix.aix
    >Subject: fsck problems on RS/6000
    >Date: 12 Dec 90 22:34:49 GMT
    >Lines: 47
    >
    >Hi Folks,
    >
    >  When I run fsck (AIX 3.1.1, RS/6000)  I sometimes get a whole
    >  bunch of these messages:
    >
    >Unref file (NOT CLEARED)
    >Unref file  I=55565  owner=root mode=120777
    >size=24 mtime=Dec 05 11:34 1990  (NOT RECONNECTED)
    >Unref file (NOT CLEARED)
    >Unref file  I=55566  owner=root mode=120777
    >size=24 mtime=Dec 05 11:34 1990  (NOT RECONNECTED)
    >    .
    >    .
    >    .
    >   etc.
    >
    >I have not been able to get fsck to reconnect the seemingly
    >lost files (fsck -p /dev/hd4 won't do it).
    >
    >All suggestions welcome.
    >
    >Thanks
    >
    >Freddy

Hi again,

   I just noticed that I get this message from fsck, when I start it up:

    ** Checking /dev/hd4 (/) MOUNTED FILE SYSTEM; WRITING SUPPRESSED;
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

   Is this the reason that fsck refuses to reconnect the lost files ?
   If that's the case, how to I get around this problem (it's hard to
   unmount the root filesystem ;-).

Thanks

Freddy

gs26@prism.gatech.EDU (Glenn R. Stone) (12/16/90)

In <9150@adobe.UUCP> jensen@adobe.com (Freddy Jensen) writes:


>    >  When I run fsck (AIX 3.1.1, RS/6000)  I sometimes get a whole
>    >  bunch of these messages:
>    >
>    >Unref file (NOT CLEARED)
>    >Unref file  I=55565  owner=root mode=120777
>    >size=24 mtime=Dec 05 11:34 1990  (NOT RECONNECTED)
>   I just noticed that I get this message from fsck, when I start it up:
>    ** Checking /dev/hd4 (/) MOUNTED FILE SYSTEM; WRITING SUPPRESSED;

Boot from floppy, select system maintenance, run /etc/continue, and
fsck from there.  That way you're running off the ramdisk, not the
root file system.

-- Glenn R. Stone (gs26@prism.gatech.edu)

marc@arnor.uucp (12/17/90)

Reminder - you should not expect fsck to work correctly on a mounted
file system in AIXV3.  To actually check/repair /dev/hd4, which is
mounted as root, you must 

1.  boot from diskette.
2.  select maint. mode
3.  type /etc/continue hdisk0 exit   (replace hdisk0 with boot disk if
	not hdisk0)
4.  now fsck /dev/hd4


--

Marc Auslander

dcm@nostromo.austin.ibm.com (craig miller) (12/18/90)

One more point about fsck on mounted filesystems:  the behaviour is
pretty much unpredictable, especially if the filesystem is active.

Also there is no way to get fsck to modify a mounted filesystem
on AIXV3.  We decided a long time ago that this was not A Good
Thing(tm) due to the journaling.

	Craig
------
	Craig Miller
	Locus Computing Corporation, Austin, TX.
	UUCP: ..!cs.utexas.edu!ibmchs!auschs!slaughter!dcm
	"I do not represent LCC or IBM.  I represent myself (usually)."	

bware@slate.mines.colorado.edu (Bob Ware) (12/19/90)

We have had problems with corrupted filesystems on RS/6000's running
AIX 3.1 with the 3001 update.  

We just got the word from IBM that there is a problem with the stdout stream
that can cause filesystem corruption under 3001.  The word is that it
is fixed in 3002 (the fsck file is not what is changed, though).

My advice: DO NOT RUN FSCK UNTILL YOU HAVE 3002 INSTALLED!

-- 
Bob Ware, Colorado School of Mines, Golden, Co 80401, USA
(303) 273-3987
bware@mines.colorado.edu bware@slate.mines.colorado.edu bware@mines.bitnet