On Wed, 27 Jun 2012 07:34:13 -0500 Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> wrote: > > With a disk size of 2 TB thid should take about 6 hours? > > Yeah, something like that. > > > I think I'll let it run again this evening so that it can complete > > until the next day. > > Do them one at a time this time, starting with /dev/sdk. Remember to > issue sync. E.g. > > ~$ dd if=/dev/zero of=/dev/sdk bs=16384; sync > > Try a smaller block size this time, 16KB instead of 1M. Ok, thanks I will. And additionally I will write down what time I started each command so when one of them still hasn't finished after 12 hours or so the disk will have to be replaced right? > Oh, Ramon, before you do any of this, change to the deadline elevator: > > ~$ echo deadline > /sys/block/sdk/queue/scheduler > > Dangit, Ramon, I can't believe I forgot to tell you this when you > installed the 9240. Debian, like most distros, defaults to the CFQ > elevator, which is good, I guess, for interactive desktop use. But it > sucks like a Hoover with most server workloads. So add this to your > kernel boot options in grub's menu.list, normally found in > /boot/grub/menu.lst: > > elevator=deadline > > That will enable deadline each time you boot. So after you make the > change go ahead and reboot the system. Then proceed with your dd > commands. Very interesting!!! Thanks for that :-) Btw: I use grub2. The file I edited is /etc/default/grub. I changed this line: GRUB_CMDLINE_LINUX_DEFAULT="quiet elevator=deadline" and ran ~# update-grub I checked if the right scheduler is running: ~$ cat /sys/block/sdk/queue/scheduler noop [deadline] cfq Is this correct what I did? > >> So at this point you can try creating the RAID5 array again. If > >> the dd command did what we wanted, /dev/sdk should have remapped > >> the bad sector, and you shouldn't get the error kicking that > >> drive. If you still do, you may need to replace the drive. > > > > I'm not sure if I didn't kille the dd command too early. > > Maybe it's better to let it run again. Maybe even each disk at once? > > Maybe this would already tell if a disk is faulty? > > Yeah, do em one at a time this time. It'll cause less load, and you > should still be able to watch movies etc while it runs. And I can see if one of them behaves strangely :-) Cheers Ramon -- 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
