On Fri, Nov 04, 2016 at 02:22:48PM -0400, Phil Turmel wrote:
> On 11/04/2016 02:18 PM, Marc MERLIN wrote:
>
> > Right, so I thought I was home free, but not even close. My array is
> > back up, the badblock feature is disabled, array reports clean, but I
> > cannot access data past 8.8TB, it just fails.
> >
> > myth:~# dd if=/dev/md5 of=/dev/null bs=1GB skip=8797
> > dd: reading `/dev/md5': Invalid argument
> > 0+0 records in
> > 0+0 records out
> > 0 bytes (0 B) copied, 0.000403171 s, 0.0 kB/s
> > myth:~# dd if=/dev/md5 of=/dev/null bs=1GB skip=8796
> > dd: reading `/dev/md5': Invalid argument
> > 1+0 records in
> > 1+0 records out
> > 1000000000 bytes (1.0 GB) copied, 10.5817 s, 94.5 MB/s
>
> That has nothing to do with MD. You are using a power of ten suffix in
> your block size, so you are running into non-aligned sector locations.
not really, I read the whole device from scratch (without skip) and it
read 8.8TB before it failed. It just takes 2 days to run, so it's a bit
annoying to do repeatedly :)
myth:/dev# dd if=/dev/md5 of=/dev/null bs=1GB skip=8790
dd: reading `/dev/md5': Invalid argument
7+0 records in
7+0 records out
7000000000 bytes (7.0 GB) copied, 76.7736 s, 91.2 MB/s
It doesn't matter where I start, it fails exactly in the same place, and
I can't skip over it, anything after that mark is unreadable.
I can switch to GiB if you'd like, same thing:
myth:/dev# dd if=/dev/md5 of=/dev/null bs=1GiB skip=8190
dd: reading `/dev/md5': Invalid argument
2+0 records in
2+0 records out
2147483648 bytes (2.1 GB) copied, 21.9751 s, 97.7 MB/s
myth:/dev# dd if=/dev/md5 of=/dev/null bs=1GiB skip=8200
dd: reading `/dev/md5': Invalid argument
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000281885 s, 0.0 kB/s
myth:/dev# dd if=/dev/md5 of=/dev/null bs=1GiB skip=8500
dd: reading `/dev/md5': Invalid argument
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000395691 s, 0.0 kB/s
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/ | PGP 1024R/763BE901
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