As I suspected, majordomo doesn't like attachments. I looked through the logs. The only odd thing I see before the read that hangs is this message: smartd[3069]: Device: /dev/hda, 1 Currently unreadable (pending) sectors Which I only see in /var/log/messages because the stack dump blows whatever buffer size if reserved for dmesg (the whole stack trace doesn't make it in). I'm going to try a different computer running a different OS next. Alan, Neil, I wasn't able to make anything of those logs. I've also grabbed /var/log/message to get the gap between dmesg-4-* and dmesg-5-*. I'll send that to you two in a separate message. If anyone else would like my logs, let me know. -- Michael Schwarz > Okay. I've verified my hardware (by doing large write/reads to non-raid > file systems on each of the seven USB flash drives on the hub). > > So this morning I booted cold and began gathering log data. I'm sending it > to you guys (you hsould know this) before looking at it myself. Here's > the sequence: > > Cold boot > Gnome login > echo t > /proc/sysrq-trigger > dmesg > dmesg-0-beforehub.log > Attached hub with 7 drives > dmesg > dmesg-1-afterhub.log > mdadm --create /dev/md0 --auto=md --level=0 --raid-devices=7 /dev/sd? > dmesg > dmesg-2-aftermdcreate.log > mke2fs -b 4096 -R stride=16 /dev/md0 > dmesg > dmesg-3-aftermkfs.log > mount /dev/md0 /mnt > cp -rv ~mschwarz/FUTURAMA_S2D2/* /mnt > dmesg > dmesg-4-afterbigwrite.log > cp -rv /mnt/* fs2d2/ > > At this point, the process hangs. So I ran: > > echo t > /proc/sysrq-trigger > dmesg > dmesg-5-hungread.log > > ...in a different root window. All these operations were performed as root > (in order to be as dangerous as possible -- actually, in order to reduce > possible permissions issues; although I don't think there are any) > > All of these dmesg logs are attached in gzip format. I don't know what > majordomo will do with those, but the cc's going directly to Alan and Neil > should come through. I'm going to start combing these files myself, so if > you guys want to save time, you can certainly give me a couple hours to > get started! ;-) > > As always, I'm very grateful for your assistance and that of the group! > > -- > Michael Schwarz > >> Yeah, I understand that. >> >> Sorry, I use squirrelmail. Pretty limited... >> >> I'll get you a "raw" dmseg output when I replicate the problem. >> > - 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
