On Thu, 5 Jul 2007, Stuart D. Gathman wrote:
> On Wed, 4 Jul 2007, Jim Schatzman wrote:
>
> > I made the mistake of trying to use pvmove to move any good data from a bad
> > disk to a new identical good disk in an LV. Unfortunately, the Pvmove failed
> > in midoperation. It cannot now be aborted, presumably because of the bad
> > disk.
>
> I wish there was a SMART command to a drive that would tell it to pretend a
> range of sectors is bad until further notice (without actually remapping said
> sectors). This would be a great help is debugging the error handling of
> things like LVM. In fact, maybe there already is such a feature in SMART,
> and it just isn't widely known.
This could be added to the linux disk driver. There could be an
option for a disk module that would pretend that a range of sectors
got an I/O error from the drive. This would allow debugging the LVM
layer.
E.g. modprobe.conf:
options mptbase debug_bad=450000-500000
--
Stuart D. Gathman <stuart@bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
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