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Operating Systems AIX Questions about setting up GPFS Post 302733131 by bstring on Monday 19th of November 2012 09:42:32 PM
Old 11-19-2012
Questions about setting up GPFS

Hello, I need to test whether our product will work with GPFS filesystems and I have some questions regarding the setup:

1. Do I need to dedicate an entire hard disk if I want to have GPFS on it? Or can I somehow split a disk into 2 virtual disks, and only use 1 for gpfs?
2. If lspv returns "none" that means the disk is connected but has not been allocated, and thus available for use in GPFS setup?
Example (hdisk3):
Code:
[root@aix01: /]# lspv
hdisk0          00ca0c3546524b4e                    rootvg          active
hdisk1          00ca0c35797dab06                    vg1             active
hdisk2          00ca0c35797daba9                    vg1             active
hdisk3          none                                None
hdisk4          00ca0c35645c51bf                    san1            active
hdisk5          00ca0c3564646ef3                    san2            active

3. Do I have to have a second node in order to create a cluster and create a gpfs on that cluster? Or can I start with one node (just to test functionality) and add a second node later? (basically, can I use that one system above with hdisk3 available to test gpfs on its own?)

Thanks in advance
 

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VFS_TSMSM(8)						    System Administration tools 					      VFS_TSMSM(8)

NAME
vfs_tsmsm - VFS module for handling offline files with Tivoli Storage Manager Space Management SYNOPSIS
vfs objects = tsmsm DESCRIPTION
This VFS module is part of the samba(7) suite. The tsmsm VFS module is an extension for handling offline files with Tivoli Storage Manager Space Management. It tries to avoid calling expensive DMAPI calls with some heuristics based on the fact that number of blocks reported of a file multiplied by 512 will be bigger than 'online ratio' of actual size for online (non-migrated) files. If heuristic check fails, the module calls DMAPI and asks for a specific attribute which is present for offline (migrated) files. If this attribute presents, the file is considered offline. This module is not stackable. OPTIONS
tsmsm:hsm script = [ path to hsm script ] hsm script should point to a shell script which accepts two arguments: operation and filepath. the tsmsm module only uses "offline" for operation to set the file under filepath offline. tsmsm:online ratio = [ number ] Ratio to check reported size against actual file size. The default value is 0.5. tsmsm:dmapi attribute = [ attribute-name ] Name of a DMAPI attribute that is present when a file is offline. The default is "IBMobj" (which is what GPFS uses). tsmsm:dmapi value = [ value for the DMAPI attribute ] Value that the DMAPI attribute should have for the file to be considered offline. The default is empty (no value required). EXAMPLES
A GPFS mount with TSM support can be exported via Samba as follows: [gpfs_tsm_share] vfs objects = tsmsm gpfs path = /test/gpfs_mount VERSION
This man page is correct for version 4.0 of the Samba suite. AUTHOR
The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed. Samba 4.0 06/17/2014 VFS_TSMSM(8)
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