Another case of the vanishing disk

[Erich Dollansky]

Hi,

On Fri, 21 Mar 2014 20:54:30 -0500
cruxpot <cruxpot at gmail.com> wrote:

> I can do that but it was disk 4 this time. Last time it was disk 3 and
> before that it was it was something else. That is why I suspect the
> controller or AHCI more than the disks since they all have the same
> error accrual.
> 
> I could move the disks to the backup server and see if I get a drop
> and check error rate there. That is an idea.

yes, just change something. You can also move all disks. This way you
see if the disks are the source of the problem. AHCI? If this would be
the problem, there would be a very basic problem with FreeBSD or the
drives.

Erich

> On Mar 21, 2014 8:23 PM, "Erich Dollansky"
> <erichsfreebsdlist at alogt.com> wrote:
> 
> > Hi,
> >
> > I would test the disks in a different setup. Can you connect them
> > to a different machine? Not in one go but disk by disk.
> >
> > Can you run the original machine just with one disk using UFS?
> >
> > As and example: I have here one disk from a broken machine which
> > gives problems in my new machine. I do not think that the disk also
> > got broken the moment the other machine died. So, I will keep the
> > disk until I can use it in a different environment.
> >
> > With other words: strange things happen ones in a while.
> >
> > Erich
> >
> >
> >
> >  On Fri, 21 Mar 2014 20:03:43 -0500
> > cruxpot <cruxpot at gmail.com> wrote:
> >
> > > Well, it happened again five days after the first time. Does
> > > anyone think that turning on AHCI in the BIOS and the rc.conf
> > > options will help? BIOS has the latest firmware. Otherwise I am
> > > going to start replacing hardware. Not sure if I will replace the
> > > disks or motherboard first since it's so old (circa 2008,
> > > A8R-MVP).
> > >
> > > On Sun, Mar 16, 2014 at 9:47 PM, cruxpot <cruxpot at gmail.com>
> > > wrote:
> > > > According to my logs the first occurrence was on July 3rd of
> > > > last year but that is also as far back as my logs go. I have
> > > > four logged incidents since that time with the most recent on
> > > > March 13th, which caused my zfs pool to become corrupt thus
> > > > bringing it to my attention. I remember this server locking up
> > > > before that, but I didn't do much investigation and just cold
> > > > cycled it. I did not really look into it until December which
> > > > is also when I replaced the PSU and it did not solve the
> > > > problem. It is possible it has been doing this since the
> > > > beginning but I am uncertain.
> > > >
> > > > On Mar 16, 2014 7:23 PM, "Erich Dollansky"
> > > > <erichsfreebsdlist at alogt.com> wrote:
> > > >>
> > > >> Hi,
> > > >>
> > > >> On Sun, 16 Mar 2014 16:29:43 -0500
> > > >> cruxpot <cruxpot at gmail.com> wrote:
> > > >>
> > > >> > I guess I did shoot myself in the foot on buying these
> > > >> > drives, but they were $75/each at Best Buy on a sale about
> > > >> > two years ago and I thought it was too good to pass up.
> > > >> >
> > > >> so, you have the problems since two years then?
> > > >>
> > > >> Erich
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> >