On Sep 25, 2007, at 5:48 PM, Richard Elling wrote:
Greg Shaw wrote:
James C. McPherson wrote:
Bill Sommerfeld wrote:
On Wed, 2007-09-26 at 08:26 +1000, James C. McPherson wrote:
How would you gather that information?
the tools to use would be dependant on the actual storage device
in use.
luxadm for A5x00 and V8x0 internal storage, sccli for 3xxx,
etc., etc.,
No consistent interface to use, then, unless another tool
or cruft gets added to ZFS to make this happen. That would
seem to defeat one of the major wins of ZFS - storage
neutrality.
I'd be happy with an arbitrary field that could be assigned via a
command. Intelligence could be added later if appropriate, but at
this point, figuring out what-is-where on a big list of disk IDs
on a SAN device is very difficult.
Something like a text file? :-P
The problem with this is that wrong information is much worse than no
information, there is no way to automatically validate the
information,
and therefore people are involved. If people were reliable, then even
a text file would work. If it can't be automatic and reliable, then
it isn't worth doing.
ZFS validates the disks as it boots, correct? If it has a way to
keep track of who-is-who for pool redundancy purposes, is it that
difficult to associate a text field with that device?
Wrong information may be bad, but it's far better than *no* information.
There have been a number of map-this-to-that implementations over the
years, but they have all relied upon intimate knowledge of the
hardware
which also has fixed physical addressing (eg. SSA, thumper, et.al.)
The virtual new world intentionally tries to hide this sort of info.
There was a time when everyone on the internet knew the IP
addresses of
all the cool places. After a week or two, work begun on a name
service ;-)
Perhaps devices should be name service aware and the protocols
extended
to perform name lookups.
-- richard
I disagree. VxVM has always had names for the different pieces,
including the disk name. It was able to associate the name with the
disk, and has done so for ~10 years?
I'm asking for the same ability -- let me name the disks so that I
can keep track of them using human readable names.
-----
Gregory Shaw, IT Architect
IT CTO Group, Sun Microsystems Inc.
Phone: (303)-272-8817 (x78817)
500 Eldorado Blvd, UBRM02-157 [EMAIL PROTECTED] (work)
Broomfield, CO 80021 [EMAIL PROTECTED] (home)
"When Microsoft writes an application for Linux, I've won." - Linus
Torvalds
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