Thanks, Richard!

On 6/27/05, Mike <mikee AT mikee.ath DOT cx> wrote:
> On Mon, 27 Jun 2005, Richard Sims might have said:
> 
> > A big FYI for AIX 5.x sites...
> >
> > I spent most of the weekend pursuing a problem in our TSM system
> > where HSM operations could not proceed. The whole AIX 5.2 system got
> > so screwed up in the kernel that 'ls -lR /opt' and 'ls -lR /usr'
> > would hang, and nfsd was accumulating hundreds of unserviceable
> > threads. After some reboots I was able to isolate the problem to a
> > "seed" area: directory /etc/adsm/SpaceMan/candidatesPool/, where an
> > 'ls -l' on it would hang (loop, actually), which 'truss' showed to be
> > in a statx(). There were no errors in the AIX Error Log, the console,
> > or anywhere else. At Init 1, we rebuilt the directory and HSM could
> > proceed.
> >
> > Today, finally, AIX evidenced errors in the Error Log:
> > JFS_META_CORRUPTION  and  JFS_FSCK_REQUIRED (on /). This finally gave
> > me a solid keyword.  That led me to APAR IY66404 for AIX 5.2, which
> > is quite new. (It has siblings for AIX 5.1 and 5.3.) Make sure you
> > have this applied to avoid this very nasty scenario resulting from an
> > AIX I/O serialization defect. You could end up with some unpleasant
> > data loss without the HIPER APAR.
> >
> >    Richard Sims
> >
> 
> Is this patch specific to any AIX platform or all AIX 5.2 in general?
> 
> Mike
>