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
apt-mirror
APT-MIRROR(1) User Contributed Perl Documentation APT-MIRROR(1)
NAME
apt-mirror - apt sources mirroring tool
SYNOPSIS
apt-mirror [configfile]
DESCRIPTION
A small and efficient tool that lets you mirror a part of or the whole Debian GNU/Linux distribution or any other apt sources.
Main features:
* It uses a config similar to apts sources.list
* It's fully pool comply
* It supports multithreaded downloading
* It supports multiple architectures at the same time
* It can automatically remove unneeded files
* It works well on overloaded channel to internet
* It never produces an inconsistent mirror including while mirroring
* It works on all POSIX compliant systems with perl and wget
COMMENTS
apt-mirror uses /etc/apt/mirror.list as a configuration file. By default it is tuned to official Debian or Ubuntu mirrors. Change it for
your needs.
After you setup the configuration file you may run as root:
# su - apt-mirror -c apt-mirror
Or uncomment line in /etc/cron.d/apt-mirror to enable daily mirror updates.
FILES
/etc/apt/mirror.list
Main configuration file
/etc/cron.d/apt-mirror
Cron configuration template
/var/spool/apt-mirror/mirror
Mirror places here
/var/spool/apt-mirror/skel
Place for temporarily downloaded indexes
/var/spool/apt-mirror/var
Log files placed here. URLs and MD5 summs also here.
CONFIGURATION EXAMPLES
The mirror.list configuration supports many options, the file is well commented explinging each option. here are some sample mirror
configuration lines showing the various supported ways :
Normal: deb http://example.com/debian stable main contrib non-free
Arch Specific: ( many other arch's are supported ) deb-powerpc http://example.com/debian stable main contrib non-free
HTTP and FTP Auth or non-standard port: deb http://user:pass@example.com:8080/debian stable main contrib non-free
Source Mirroring: deb-src http://example.com/debian stable main contrib non-free
ORIGINAL AUTHOR
Dmitry N. Hramtsov <hdn@nsu.ru>
CURRENT AUTHORS
Dmitry N. Hramtsov <hdn@nsu.ru> Brandon Holtsclaw <me@brandonholtsclaw.com>
perl v5.14.2 2012-01-28 APT-MIRROR(1)