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Thanks for the explanation of the discrepancy. <br>
<br>
The output of the fdisk -W commands is identical for both disks, as
I would expect, and the vtoc is identical on both disks, too. <br>
<br>
I think I misinterpreted the intent of the message from fmthard. I
was concerned that it meant "the vtoc doesn't make sense, but I am
copying it to the disk, anyway," leaving me with a disk in a bad
state. Instead it appears to have been more of a "fixed that for
you" message, and the disk is fine, with all the dimensions matching
on both disks. I will continue with the mirroring.<br>
<br>
<div class="moz-cite-prefix">On 2/8/2014 3:10 PM, Peter Tribble
wrote:<br>
</div>
<blockquote
cite="mid:CAEgYsbG4qpst02mXBo6a6M5C4YhKn1VA_ASpvsVwVn=CZjoy_A@mail.gmail.com"
type="cite">
<div dir="ltr">On Sat, Feb 8, 2014 at 6:21 AM, Willard Korfhage <span
dir="ltr"><<a moz-do-not-send="true"
href="mailto:omniti@familyk.org" target="_blank">omniti@familyk.org</a>></span>
wrote:<br>
<div class="gmail_extra">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF"> That could happen,
depending on how many bad blocks the disk has, but in
this case, the numbers it reports, the numbers it says
are inconsistent, are from the original OmniOS install.
I am surprised that the original install would generate
an inconsistent partition arrangement.<br>
</div>
</blockquote>
<div><br>
</div>
<div>Why do you think that? What the error you've given is
saying is that<br>
</div>
<div>the size of the Solaris partition on the new disk is
smaller than the<br>
size of the Solaris partition on the original disk. That's
all.<br>
</div>
<div> </div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF"> Now if I could just
figure out how to format the disk, I could try starting
from scratch. Given the Illumos bug, I suppose I'll have
to pull it and format it on another machine.<br>
</div>
</blockquote>
<div><br>
</div>
<div>I can't see where that bug comes into play. The need to
do a low-level<br>
format of a drive is extremely rare.<br>
<br>
</div>
<div>
I see these discrepancies fairly frequently when fdisk
gets out of whack.<br>
</div>
<div>Most commonly, because some drives have a diagnostic
partition on them,<br>
</div>
<div>but sometimes because it can't decide whether to start
at cylinder 0 or 1.<br>
</div>
<div>Or just because the drives were partitioned up on
different OS versions.<br>
</div>
<div><br>
</div>
<div>Compare:<br>
<br>
</div>
<div>fdisk -W - /dev/rdsk/c2t0d0p0<br>
fdisk -W - /dev/rdsk/c2t1d0p0<br>
<br>
</div>
If the fdisk dimensions do actually match, then you could
save<br>
out the fdisk table off the first disk and load it onto the
second,<br>
something like:<br>
<br>
fdisk -W /tmp/fmap /dev/rdsk/c2t0d0p0<br>
fdisk -F /tmp/fmap /dev/rdsk/c2t1d0p0<br>
<br>
</div>
<div class="gmail_quote">and then do the ptrtvtoc|fmthard
step.<br>
</div>
<div class="gmail_quote"><br>
</div>
<div class="gmail_quote">
<div>If you look at the sizes reported, specifically:<br>
<br>
* 32130 sectors/cylinder<br>
* 60799 cylinders<br>
* 60797 accessible cylinders<br>
<br>
and</div>
<div><br>
* First Sector Last<br>
* Partition Tag Flags Sector Count Sector
Mount Directory<br>
0 2 00 32130 1953375480 1953407609<br>
2 5 01 0 1953471870 1953471869<br>
8 1 01 0 32130 32129<br>
<br>
</div>
<div>then it's allocated slice 0 up to the end of the 60797
accessible<br>
cylinders, but slice 2 (which refers to the whole disk) is
64260<br>
</div>
<div>sectors or 2 cylinders longer, filling out to the end
of 60799.<br>
</div>
<div>The second disk you have is reporting a size of
1953407610<br>
</div>
<div>sectors, or 0-1953407609, or 32130*60797, so it's just
picked<br>
</div>
<div>up the accessible cylinders. The disks appear to be the
same<br>
</div>
<div>size, it's those 2 inaccessible cylinders that are
confusing matters.<br>
</div>
<div><br>
If the fdisk dimensions are different (the second disk
only appears<br>
</div>
<div>to really be 60797 sectors) then it's still not a
problem, as all you're<br>
interested in is slice 0, which is the right size.
Simplest way to do<br>
</div>
<div>that is to grep out the line in the prtvtoc output for
partition 2, and<br>
fmthard will fill it in automatically at whatever size it
thinks is correct.<br>
<br>
</div>
<div><br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>On 2/7/2014 11:54 AM, Warren Marts wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">This may be a genuine mismatch between
the disks.
<div><br>
</div>
<div>A few weeks ago I was trying to image between
two apparently identical Western Digital RE2 400GB
drives. They were produced on the same day and
their serial numbers were only ~200 apart, but the
disk utility reported block counts that differed
by about 20,000 (10 MB) and neither count matched
the one on the disk label.</div>
<div><br>
</div>
<div>I was surprised, to say the least. </div>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Fri, Feb 7, 2014 at
10:14 AM, Willard Korfhage <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:omniti@familyk.org"
target="_blank">omniti@familyk.org</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px
0px 0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">I just
installed OmniOS r151008j last night, and today
I wanted to mirror rpool, but have a warning
about the disk size. I have 2 Seagate 1TB disks
(model ST1000LM024HN), and my OmniOS install is
on one of them. I told the install to use the
whole disk. Some version of OpenIndiana was
previously installed on the disk. The install
went without any problem.<br>
<br>
c2t0d0 is the disk with OmniOS<br>
c2t1d0 is supposed to be its mirror<br>
<br>
To do the mirroring, following the directions in
the wiki, I did<br>
<br>
root@s1:~# pfexec fdisk -B c2t1d0p0<br>
root@s1:~# pfexec prtvtoc /dev/rdsk/c2t0d0s2 |
pfexec fmthard -s - /dev/rdsk/c2t1d0s2<br>
fmthard: Partition 2 specifies the full disk and
is not equal<br>
full size of disk. The full disk capacity is
1953407610 sectors.<br>
fmthard: Partition 2 specified as 1953471870
sectors starting at 0<br>
does not fit. The full disk contains 1953407610
sectors.<br>
fmthard: New volume table of contents now in
place.
<div class=""><br>
<br>
At this point I stopped, and haven't done the
mirror.<br>
<br>
</div>
For the disk with the install, format reports<br>
<br>
Current Disk = c2t0d0<br>
<ATA-ST1000LM024HN-M-0001 cyl 60797 alt 2 hd
255 sec 126><br>
/pci@0,0/pci8086,1c02@1f,2/disk@0,0<br>
<br>
and further information is<br>
<br>
root@s1:~# pfexec prtvtoc /dev/rdsk/c2t0d0s2<br>
* /dev/rdsk/c2t0d0s2 partition map<br>
*<br>
* Dimensions:<br>
* 512 bytes/sector<br>
* 126 sectors/track<br>
* 255 tracks/cylinder<br>
* 32130 sectors/cylinder<br>
* 60799 cylinders<br>
* 60797 accessible cylinders<br>
*<br>
* Flags:<br>
* 1: unmountable<br>
* 10: read-only<br>
*<br>
* Unallocated space:<br>
* First Sector Last<br>
* Sector Count Sector<br>
* 0 32130 32129<br>
*<br>
* First Sector
Last<br>
* Partition Tag Flags Sector Count
Sector Mount Directory<br>
0 2 00 32130 1953375480
1953407609<br>
2 5 01 0 1953471870
1953471869<br>
8 1 01 0 32130
32129<br>
<br>
Any idea what is going on?<br>
<br>
I tried to format the disk without the install
(c2t1d0), just to start with a completely fresh
disk, but it doesn't work. This appears to be a
long-standing (11-month old) Illumos bug (<a
moz-do-not-send="true"
href="https://www.illumos.org/issues/3610"
target="_blank">https://www.illumos.org/issues/3610</a>)
<div class=""><br>
<br>
<br>
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</div>
</blockquote>
</div>
<br>
</div>
</blockquote>
<br>
</div>
<br>
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<br>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
-Peter Tribble<br>
<a moz-do-not-send="true"
href="http://www.petertribble.co.uk/">http://www.petertribble.co.uk/</a>
- <a moz-do-not-send="true"
href="http://ptribble.blogspot.com/">http://ptribble.blogspot.com/</a>
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</blockquote>
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