What are the differences?

[itrc55]

Hi All,

In the last period I could not differentiate between some of the things, that is
What are the differences between the
CFS (cluster file system), CVM (Cluster volume manager), VCS (varites cluster server), LVM (logical volume manager), VxVM and VxFS.
Are many, but I could not link them.

thanks

[Taifur]

Hi
Check below link , where u can find abt lvm, cfs, vcs...

CFS:


The HP Serviceguard Storage Management Suite offers additional components for interfacing with the Veritas Cluster File System on some current versions of HP-UX (see â About Veritas CFS and CVM from Symantecâ ). Documents for the management suite are posted on http://docs.hp.com.

Veritas CFS components operate directly over Ethernet networks that connect the nodes within a cluster. Redundant networks are required to avoid single points of failure

http://docs.hp.com/en/B3936-90144/ch03s01.html
http://docs.hp.com/en/T1859-90060/ch03s12.html

http://docs.hp.com/en/B2355-60105/lvm.7.html
http://docs.hp.com/en/5187-1369/ch12s04.html


Cheers/
Taifur

[itrc55]

Hi,

what is the difference between using CFS and using CFS with CVM.

thanks

[chris huys_4 · Accepted solution]

Hi,

Cluster solution.

SMS = HP Serviceguard Storage Management Suite, the "top" sms suite, HP Serviceguard Cluster File System for RAC, is HP's integration of MC/SG with oracle RAC (SGeRAC) in a CFS environment, i.e. oracle RAC "on a filesystem". filesystem is CFS, volumemanager is CVM

SGeRAC = MC/SG extension for RAC, HP's integration of MC/SG with Oracle RAC (Oracle Real Application Cluster), i.e oracle RAC on "raw volumes". volumemanager is SLVM or CVM.

MC/SG - MC ServiceGuard, HP's cluster solution

VCS - Veritas Cluster Server, Symantec's cluster solution

NOTE: Veritas (the company) was bought some years ago by Symantec. The "Veritas" "name" lives further in the "acronyms" of the products "initially" sold by Veritas.

Filesystems

CFS = Cluster File System, the ability to mount the same VxFS filesystem simultanious, on different hosts of a cluster (CVM is a prerequisite as is a cluster solution (SMS or VCS))

VxFS = Veritas File System, the default filesystem on HP-UX, activate a vxfs filesystem on 1 HP-UX host (prerequisite is a volumemanager, LVM or VxVM )

Volume Managers

CVM - Cluster Volume Manager, the ability to activate the same VxVM diskgroup simultanious, on different hosts of a cluster (SMS or SGeRAC or VCS is a prerequisite)

SLVM - Shared Logical Volume Manager, the ability to activate the same LVM volumegroup simultanious, on different hosts of a cluster. (SGeRAC is a prerequisite)

LVM - Logical volume Manager, activate a LVM volumegroup on 1 HP-UX host

VxVM - Veritas Volume Manager, activate a VxVM diskgroup on 1 HP-UX host

Greetz,
Chris

[itrc55]

Hi Chris,
and Thank you for this beautiful illustration

now, when i want to mount and access filesystem on multiple servers at the same time (with R/W) without using oracle rac,
What is it that I use?
"
CVM - Cluster Volume Manager, the ability to activate the same VxVM diskgroup simultanious, on different hosts of a cluster (SMS or SGeRAC or VCS is a prerequisite)

or

SLVM - Shared Logical Volume Manager, the ability to activate the same LVM volumegroup simultanious, on different hosts of a cluster. (SGeRAC is a prerequisite) "

thanks

[chris huys_4]

Hi,

> now, when i want to mount and access
> filesystem on multiple servers at the same
> time (with R/W) without using oracle rac,
> What is it that I use?

> CVM - Cluster Volume Manager, the ability to
> activate the same VxVM diskgroup
> simultanious, on different hosts of a
> cluster (SMS or SGeRAC or VCS is a
> prerequisite)
[cut]

Only CVM can be used.

And HP's mc/sg cluster solution for the use of cfs in a non-oracle environment is one of the other sms suites available.

T2775xx: HP Serviceguard Cluster File System

http://docs.hp.com/en/16423/Application-Use-Cases-for-SGSMS_4AA0-3466ENW_DRAFT1_2009-11-06.pdf

Which will use CVM and CFS.

Greetz,
Chris

[itrc55]

Hi Again,

you mean now to start a basic cluster between two node and edit the ASCII file.
but what is value of

FIRST_CLUSTER_LOCK_VG
FIRST_CLUSTER_LOCK_PV
VOLUME_GROUP

in this file?

and then create a VxVM disk group and volume, then run this command

# cmruncl (a cluster must be configured first)
# cfscluster config -t 900 -s (creates and starts SG-CFS-pkg) but when execute this command i see
# cfscluster config -t 900 -s
sh: cfscluster: not found.

what is the correct steps for that?

very very thanks

[chris huys_4]

Hi,

> # cfscluster config -t 900 -s
> sh: cfscluster: not found.

> what is the correct steps for that?
If the required sms suite is not installed, the cfscluster binary will not be found.

Greetz,
Chris

[itrc55]

Hi,

i already installed the sms suite (SGSMSupp_A.02.00_HP-UX_B.11.23_IA_PA)
and the problem is still, what is the next step.

thanks

[chris huys_4]

Hi,

>(SGSMSupp_A.02.00_HP-UX_B.11.23_IA_PA
SGSMSupp_A.02.00_HP-UX_B.11.23_IA_PA is not the required sms suite.

SGSMSupp is just a bunch of filesets, that with one of the sms suites, were forgotten to be added.

Greetz,
Chris

[Doug O'Leary]

Hey;

The MCSG admin guide has an excellent section on "creating a storage infrastructure using veritas cluster filesystem" available at http://docs.hp.com/en/B3936-90144/ch05s02.html#cacjagfi

it's in checklist format and provides all the information you've been asking after.

Doug

[itrc55]

Hi All,

Thank you very much for the file you sent.
but I still have two questions,

1. What are the values that put them in

FIRST_CLUSTER_LOCK_VG
FIRST_CLUSTER_LOCK_PV
VOLUME_GROUP

when i edit the ASCII file (because i now using a disk group)

2. from where i can install the sms suite for 11.23 (rp8420)

Very Thanks