07-28-2009
OBP - root / mirror disk syntax
Hi all
Can someone explain to me the different syntax regarding how root / mirror disks are represented. I never truely understand the namely / device tress etc.
Let me give you an example. On one my my servers, the root and mirror drives are :-
A domain on a sunfire 6800 :-
devalias vx-rootdisk /ssm@0,0/pci@1a,700000/pci@1/SUNW,isptwo@4/sd@0,0:a
devalias vx-rootmirror /ssm@0,0/pci@1a,700000/pci@1/SUNW,isptwo@4/sd@1,0:a
On another server, a v880 the root / mirror drives are :-
devalias sds-mirror /pci@8,600000/SUNW,qlc@2/fp@0,0/disk@1,0
devalias sds-disk /pci@8,600000/SUNW,qlc@2/fp@0,0/disk@0,0
On another server, a 280, the root / mirror are :-
nvramrc=devalias mirror /devices/pci@8,600000/SUNW,qlc@4/fp@0,0/ssd@w500000e010bfd1d1,0:a
i.e. some have :a or :b or :c on the end of the device path. Why's this ? Is it hardware related ? when it says disk0,0 Im assuming its disk 0, slice 0 ?
How come the dfference in naming ?? This always gets me, and Ive never really truely known why this is.
Cheers
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LEARN ABOUT DEBIAN
metalink
METALINK(1) General Commands Manual METALINK(1)
NAME
metalink -- commandline metalink generator
SYNOPSIS
metalink [input files] [ < mirror list]
DESCRIPTION
This manual page documents briefly the metalink command.
This manual page was written for the Debian distribution because the original program does not have a manual page.
metalink allows you to generate metalinks from a list of mirrors and a collection of files. The files are hashed and the resulting metalink
is generated on the stdout.
OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is
included below.
-h --help
Produce a help message
--version
Print out the name and version.
--md5
Generate metalink from md5sum file(s).
--addpath path
Append a path to the mirrors ('/' is not checked)
--headerfile arg
Include file after the root element declaration.
--nomirrors
Don't read mirrors from stdin
--hashlist
List hashes only (implies nomirrors)
--desc arg
Add metalink description
-d arg
Include given digest
--mindigests
Include: md5 sha1
--somedigests
Include: md5 sha1 ed2k
--alldigests
Include all possible digests
Supported algorithms are (-d options): md4 md5 sha1 sha256 sha384 sha512 rmd160 tiger crc32 ed2k gnunet sha1pieces
Mirror lists are single line definitions according to: [location [preference] [type] % ] mirror base url
EXAMPLES
http://example.com/ as a mirror: echo http://example.com | metalink -d md5 -d sha1 *
http://example.com/ as a mirror with preference and location: echo us 10 % http://example.com | metalink -d md5 -d sha1 *
http://example.com/ as a mirror with preference only: echo 0 10 % http://example.com | metalink -d md5 *
AUTHOR
This manual page was written by A. Bram Neijt bneijt@gmail.com for the Debian system (but may be used by others). Permission is granted to
copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by
the Free Software Foundation.
On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.
METALINK(1)