On Mon, 30 Mar 2009, Tejun Heo wrote: > Hello, > > Guennadi Liakhovetski wrote: > > Hi Matthew, > > > > On Fri, 27 Mar 2009, Matthew Wilcox wrote: > > > >> On Sat, Mar 28, 2009 at 12:18:38AM +0100, Guennadi Liakhovetski wrote: > >>> I'm using an external eSATA / USB / Firewire 2x1T RAID from WD in RAID1 > >> Looks like your problems are solved by > >> 9062712fa9ed13b531dfc2228086650b8bd6a255 > > > > (added Tejun as the patch author and owner of similar hardware) > > Thanks for forwarding. Thanks for replying:-) > > AFAIU, that patch improves or fixes error handling on those drives, and > > the symptom, that Tejun was observing, was that the drive was hanging and > > required a power cycle. > > > > In my case the drive didn't need a power cycle, and error handling did > > work, AFAICS, but even just having that error seems not healthy for the > > data, which is confirmed by ext4 errors. Am I right? > > No, your drive checked out after the last error even after the link > speed had been lowered to 1.5Gbps, so the EH did everything it could > but no candy. The drive still checked out. > > > Error handling is great, but I think what I want is to avoid such errors > > altogether. So, my question was - can those errors be indeed caused by the > > unstable eSATA connector in the drive? Tejun, you have similar drives, do > > yours also have such a problem? How are you solving it? > > I don't use the drives extensively but shorter cables seem to solve a > lot of the issues during testing. Or rather, longer cables triggered > a LOT of problems. > > > Is the only way to improve the connector stability by milling the > > plastic casing to actually be able to insert the connector properly > > or by contacting the retailer for a replacement?... Sorry, these are > > not directly Linux driver questions, but the questions are really > > what those error messages tell me about the possible reasons for the > > problem:-) > > Give a shot at shorter cable. Hm, using a 62cm long cable ATM, should it be even shorter? It's going to be difficult physically then:-( But what about your drives - dies the connector fit well in the slot and sits firmaly there? With my disk looks likt the connector cannot be inserted completely because of too small a hole in plastic:-( Thanks Guennadi --- Guennadi Liakhovetski, Ph.D. Freelance Open-Source Software Developer -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
