Messages in this thread | | | From | Bartlomiej Zolnierkiewicz <> | Subject | Re: [PATCH] Bogus LBA48 drives | Date | Tue, 30 Mar 2004 17:51:36 +0200 |
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On Tuesday 30 of March 2004 17:22, Geert Uytterhoeven wrote: > Apparently some IDE drives (e.g. a pile of 80 GB ST380020ACE drives I have > access to) advertise to support LBA48, but don't, causing kernels that > support LBA48 (i.e. anything newer than 2.4.18, including 2.4.25 and 2.6.4) > to fail on them. Older kernels (including 2.2.20 on the Debian woody CDs) > work fine. > > One problem with those drives is that the lba_capacity_2 field in their > drive identification is set to 0, making the IDE driver think the disk is 0 > bytes large. At first I tried modifying the driver to use lba_capacity if > lba_capacity_2 is set to 0, but this caused disk errors. So it looks like > those drives don't support the increased transfer size of LBA48 neither.
I think somebody should make Seagate aware of the issue.
> I added a workaround for these drives to both 2.4.25 and 2.6.4. I'll send > patches in follow-up emails.
They look okay but some comment about this issue would be useful.
Thanks, Bartlomiej
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