I want to "fix" (as much as is possible) a misalignment issue with an
X-25E that I am using for both OS and as an slog device.
This is on x86 hardware running Solaris 10U8.
Partition table looks as follows:
Part Tag Flag Cylinders Size Blocks
0 root wm 1 - 1306 10.00GB (1306/0/0) 20980890
1 unassigned wu 0 0 (0/0/0) 0
2 backup wm 0 - 3886 29.78GB (3887/0/0) 62444655
3 unassigned wu 1307 - 3886 19.76GB (2580/0/0) 41447700
4 unassigned wu 0 0 (0/0/0) 0
5 unassigned wu 0 0 (0/0/0) 0
6 unassigned wu 0 0 (0/0/0) 0
7 unassigned wu 0 0 (0/0/0) 0
8 boot wu 0 - 0 7.84MB (1/0/0) 16065
9 unassigned wu 0 0 (0/0/0) 0
And here is fdisk:
Total disk size is 3890 cylinders
Cylinder size is 16065 (512 byte) blocks
Cylinders
Partition Status Type Start End Length %
========= ====== ============ ===== === ====== ===
1 Active Solaris 1 3889 3889 100
Slice 0 is where the OS lives and slice 3 is our slog. As you can see
from the fdisk partition table (and from the slice view), the OS
partition starts on cylinder 1 -- which is not 4k aligned.
I don't think there is much I can do to fix this without reinstalling.
However, I'm most concerned about the slog slice and would like to
recreate its partition such that it begins on cylinder 1312.
So a few questions:
- Would making s3 be 4k block aligned help even though s0 is not?
- Do I need to worry about 4k block aligning the *end* of the
slice? eg instead of ending s3 on cylinder 3886, end it on 3880
instead?
Thanks,
Ray
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