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16 slices or 10?
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B Calkins
*nix forums beginner


Joined: 02 Feb 2006
Posts: 9

PostPosted: Thu Jun 29, 2006 1:45 pm    Post subject: 16 slices or 10? Reply with quote
How many slices can you use on a Solaris 10 x86 system. Most Sun docs
state 0-9 (10 slices) , but we used to do 16 slices (s0-s15). Is it
because format only allows 0-9. I believe we can still create 16 using
fmthard? Has anyone tried it recently (version 1/06 or newer)? I
don't have a system to test it on.
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Rainer Orth
*nix forums beginner


Joined: 07 Mar 2005
Posts: 24

PostPosted: Thu Jun 29, 2006 2:58 pm    Post subject: Re: 16 slices or 10? Reply with quote
"B Calkins" <unix_ed@yahoo.com> writes:

Quote:
How many slices can you use on a Solaris 10 x86 system. Most Sun docs
state 0-9 (10 slices) , but we used to do 16 slices (s0-s15). Is it
because format only allows 0-9. I believe we can still create 16 using
fmthard? Has anyone tried it recently (version 1/06 or newer)? I
don't have a system to test it on.

I did it for quite some time, running Solaris Express both before and after
S10 FCS: using fmthard allows you to go for 16 slices on x86
(cf. <sys/isa_defs.h>, _SUNOS_VTOC_{8, 16}). I don't need this any longer
since I switched to ZFS for all but a dump slice and two ufs slices for
Live Upgrade BEs, though.

Btw., I think there's an RFE to add this capability to format.

Rainer

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Rainer Orth, Faculty of Technology, Bielefeld University
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Andrew Gabriel
*nix forums Guru


Joined: 19 Feb 2005
Posts: 454

PostPosted: Thu Jun 29, 2006 4:07 pm    Post subject: Re: 16 slices or 10? Reply with quote
In article <1151588703.278802.19860@d56g2000cwd.googlegroups.com>,
"B Calkins" <unix_ed@yahoo.com> writes:
Quote:
How many slices can you use on a Solaris 10 x86 system. Most Sun docs
state 0-9 (10 slices) , but we used to do 16 slices (s0-s15). Is it
because format only allows 0-9. I believe we can still create 16 using
fmthard? Has anyone tried it recently (version 1/06 or newer)? I
don't have a system to test it on.

Solaris x86 has the standard SVR4 limit of 16 slices in it's VToC.
Solaris sparc only has fewer for reasons of backwards compatibility
with older SunOS and openboot prom. format(1M) was never updated
properly for x86's 16 slices, but prtvtoc(1M) and fmthard(1M) work
fine with the full 16 slices.

--
Andrew Gabriel
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