RE: md: badblocks(pid 1216) used obsolete MD ioctl
Cal Webster <kc130iseo <at> coastalnet.com>
2002-07-02 19:29:17 GMT
> -----Original Message-----
> From: Maurice Hilarius [mailto:maurice <at> harddata.com]
> Sent: Monday, July 01, 2002 2:26 PM
> To: cwebster <at> ec.rr.com
> Subject: RE: md: badblocks(pid 1216) used obsolete MD ioctl
> I missed that. Always the same drive and sectors?
That's right: single drive, one bad sector.
> It might be worthwhile to run a SCSI (low level) format on this drive, so
> that any bad sectors get marked bad and are not used.
The tools at my disposal relevant to this task are fdisk, mke2fs, e2fsck,
and badblocks. I don't believe that the "surface analysis" done by most SCSI
BIOS utilities on Intel machines does much more than these tools.
> It never hurts to have device close to the terminator ALSO providing term
> power. By the time the current gets from the host, all the way to
> the other
> end of the cabling, especially with an external cabinet, the voltage may
> drop quite a bit.
> It does no harm to enable it on the drives as well, and makes sure the
> attenuation is not a problem.
I appreciate what you're saying, especially since I did not indicate the
proximity of the RAID array to the host computer. However, the length of
wire between this on-board interface connector and the last device in the
external array is less than 8 feet total, so I would expect zero benefit. To
the contrary, in our situation all it would do is make the drives run hotter