Roman, Thank you very much, I hadn't seen those reports. I had searched through the Newegg reviews for linux/ubuntu and saw good support/reviews. Now searching more generally I see several corruption reports in the feedback. Wow, that's really bad. I'll definitely be leaving some reviews there of my own to warn others. I have on hand a HighPoint Rocket 640L 4-port SATAIII card (Marvell 88SE9235 chipset) which I can use. I will do some research, but do you know of any issues with this card/chipset? If so, can you recommend a reliable, inexpensive card or cards? I have one each PCI-Express 1x and 16x slots available and would like a total of 6 or more SATAII or SATAIII ports. It is interesting that I was still seeing problems after only having one drive active across the two cards. I'll be avoiding using even one port at a time on these cards. Based on my high-level understanding, the reshape shouldn't read any data from the two new drives during the reshape, just write to them. All read data should obviously have come from the original 6 RAID5 drives. Hopefully this means all my original data is still valid across the 6 original drives. I'm hopeful that I can fail and remove both new drives, leaving a degraded, partially-reshaped RAID6. Then, re-add the new drives on a reliable controller (after wiping, clearing superblocks?) and rebuild/reshape from there. I'd expect only the data written to the drive after the migration started would potentially be corrupt, which I can accept greatfully. Any advice anyone can give on the proper steps to recover from this situation after installing a working controller card would be appreciated. Thanks, James On Tue, May 14, 2013 at 4:13 PM, Roman Mamedov <rm@xxxxxxxxxx> wrote: > > On Tue, 14 May 2013 15:56:57 -0500 > James Doebbler <jamesdoebbler@xxxxxxxxx> wrote: > > > Roman, > > > > I suppose that means you think it's hardware-related then. Do you > > have any suggestions on what/how I might be able to recover? > > > > Hardware details: > > > > The motherboard is ECS A785GM-M with 6x internal SATAII and 2x eSATAII > > I have installed 2 x SYBA SD-SA2PEX-2IR (SiI3132 Chipset), each with > > 2x onboard SATAII > > Hello, > > This card and in fact the 3132 chipset is known to corrupt data when both > ports are accessed simultaneously at high speed. > > > http://lime-technology.com/wiki/index.php/Hardware_Compatibility > > SYBA (PCI-E X1) 2 port SATA II (SiI3132) > > Beware!!! There are numerous providers of SiL3132-based addon cards, and a few of them (unknown how many) are known to be faulty, causing unseen (SILENT) data corruption - see > > http://lime-technology.com/forum/index.php?topic=18428.msg167122#msg167122 > > http://lime-technology.com/forum/index.php?topic=21052.msg187437#msg187437 > > Earlier discussions on linux-raid: > http://comments.gmane.org/gmane.linux.raid/30629 > http://permalink.gmane.org/gmane.linux.raid/33369 > http://comments.gmane.org/gmane.linux.raid/33346 > > Some more reports: > http://s.lowendshare.com/4/1368565867.495.2013-05-14T211035Z-syba3132.png > http://forum.ixbt.com/topic.cgi?id=11:35147-39#1199 (Russian) > > -- > With respect, > Roman -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
