> > Should I stop the arraya nd re-assemble it with -vvv? > > > > Also, what about my question about the bitmap? Should I delete it, > despite > > the fact mdadm says there isn't one, or should I attempt to add it > again, or > > should I wait until I do the checkarrray? > > > > There is nothing to delete. Just try to add it again. > Though I would really like to know why it hangs. If that happens > again, see if alt-sysrq-T shows anything useful. Well, it hasn't hung again, but now that I can catch my breath I can provide a little detail. As I mentioned before, the original hang occurred when I first issued: `mdadm -G /dev/md0 -b internal --bitmap-chunk=65535` Mdadm complained about the bitmap chunk being an incorrect size. I don't know if it actually created a bitmap anyway using the default size, or what, but I assumed the error meant the bitmap was not created. Going on this assumption, I immediately issued the command again, changing only the bitmap chunk size: `mdadm -G /dev/md0 -b internal --bitmap-chunk=65536` That's when it hung. I tried stopping the array, but I couldn't umount the file system because it was dirty. Any commands to mdadm - even informational ones and even `cat /proc/mdadm` would cause the xterm to hang. Even a shutdown would not work. I had to shut down the server with the power switch. When the system booted, mdadm would not assemble the array. I think Neil has figured out why. Subsequent attempts to assemble the array also failed, at least in part because /dev/md0 had been created without the array being active. I deleted /dev/md0, but subsequent failed assembly attempts again created the file. Finally I deleted the file once again and then assembled using `mdadm -A /dev/sd[a-j]` and it worked, although the array was marked as dirty, and the first attempt to access it caused a resync. When the resync was done, I fixed the "homehost" issue Neil had spotted and corrected /etc/mdadm/mdadm.conf to show all 10 drives. Finally, I added back the bitmap, and now everything seems fine. I rebooted the server, and it comes up with all 10 drives in an assembled array with an internal bitmap. -- 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
