11-17-2010
Did you setup multipath.conf correctly? I would contact your San Storage Array vendor for recommended settings.
9 More Discussions You Might Find Interesting
1. Solaris
Thinking of using our San for network backups..
Have a Netra 240 being installed and planning to get some space on our San.
Do you know what software is used to access the San from my server or what I would need to do? I know how to connect to local storage, disk arrays etc but not sure what... (1 Reply)
Discussion started by: frustrated1
1 Replies
2. Filesystems, Disks and Memory
Hi,
I have an existing SUN server that has a SAN storage installed on it. It also has softwares like Appwrox(scheduler), Taradata (database client), Samba Share and a few more installed on it.
Now suppose that I have a new unix server server and i switch the same SAN store from the old unix... (1 Reply)
Discussion started by: myloginid
1 Replies
3. AIX
I have 3 SAN disks of 1 TB each. Is it more efficient to make 1 large Volume group with multiple LV's or 3 Volume Groups with 1 LV each. The SAN disk is where all my backups will be dumped.:confused: (1 Reply)
Discussion started by: daveisme
1 Replies
4. Solaris
Hi,
I have configured our SAN Storage to be connected to our new SUN T5220.
On the SAn it looks all fine
on the server I do not see any connection:
cfgadm -al
Ap_Id Type Receptacle Occupant Condition
c1 scsi-bus connected ... (4 Replies)
Discussion started by: manni2
4 Replies
5. Red Hat
Hello,
I am using LINUX OS. I want to check what is the SAN storage size. How do i check this in server? Any help is really appreciated.. (3 Replies)
Discussion started by: govindts
3 Replies
6. Solaris
HI all,
I had recently change the Server storage from EMC to the IBM SAN.
but after the configuration, the IBM success to see the server HBA port and successfully assign a LUN for the server.
When i go to the server, and restarted it. i use the "format" command to check, but din see any... (1 Reply)
Discussion started by: SmartAntz
1 Replies
7. Solaris
Hi,
We are planning to setup a 10gR2 RAC and storage on ASM. We use Sun StorEdge SAN.
The installation and configuration manual says to configure ASM diskgroups with raw devices (preferably raw disk not volumes).
I dont really know if its possible to present raw disks to the Solaris... (4 Replies)
Discussion started by: esmgr
4 Replies
8. AIX
Can anyone recommend a good book on san storage basics and how it communicates with an AIX server? (1 Reply)
Discussion started by: NycUnxer
1 Replies
9. Solaris
hi all,
I am on solaris 10 1/13 and new to SAN storage.
I am required to connect to the LUNs on the SAN storage and is asked to provide the WWN information to the storage administrator.
Right now, it will be just 1 connection from a single hba port to the FCport on the storage directly,... (1 Reply)
Discussion started by: javanoob
1 Replies
LEARN ABOUT CENTOS
mpathconf
MPATHCONF(8) Linux Administrator's Manual MPATHCONF(8)
NAME
mpathconf - A tool for configuring device-mapper-multipath
SYNOPSIS
mpathconf [commands] [options]
DESCRIPTION
mpathconf is a utility that creates or modifies /etc/multipath.conf. It can enable or disable multipathing and configure some common
options. mpathconf can also load the dm_multipath module, start and stop the multipathd daemon, and configure the multipathd service to
start automatically or not. If mpathconf is called with no commands, it will display the current configuration.
The default options for mpathconf are --with_module The --with_multipathd option is not set by default. Enabling multipathing will load
the dm_multipath module but it will not immediately start it. This is so that users can manually edit their config file if necessary,
before starting multipathd.
If /etc/multipath.conf already exists, mpathconf will edit it. If it does not exist, mpathconf will use /usr/share/doc/device-mapper-multi-
path-0.4.9/multipath.conf as the starting file. This file has user_friendly_names set. If this file does not exist, mpathconf will create
/etc/multipath.conf from scratch. For most users, this means that user_friendly_names will be set by default, unless they use the
--user_friendly_names n command.
COMMANDS
--enable
Removes any line that blacklists all device nodes from the /etc/multipath.conf blacklist section.
--disable
Adds a line that blacklists all device nodes to the /etc/multipath.conf blacklist section. If no blacklist section exists, it will
create one.
--user_friendly_name { y | n }
If set to y, this adds the line user_friendly_names yes to the /etc/multipath.conf defaults section. If set to n, this removes the
line, if present. This command can be used along with any other command.
--find_multipaths { y | n }
If set to y, this adds the line find_multipaths yes to the /etc/multipath.conf defaults section. If set to n, this removes the line,
if present. This command can be used aldong with any other command.
OPTIONS
--with_module { y | n }
If set to y, this runs modprobe dm_multipath to install the multipath modules. This option only works with the --enable command.
This option is set to y by default.
--with_multipathd { y | n }
If set to y, this runs service multipathd start to start the multipathd daemon on --enable, service multipathd stop to stop the mul-
tipathd daemon on --disable, and service multipathd reload to reconfigure multipathd on --user_frindly_names and --find_multipaths.
This option is set to n by default.
FILES
/etc/multipath.conf
SEE ALSO
multipath.conf(5), modprobe(8), multipath(8), multipathd(8), service(8),
AUTHOR
Benjamin Marzinski <bmarzins@redhat.com>
June 2010 MPATHCONF(8)