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Operating Systems AIX Questions about setting up GPFS Post 302733475 by bstring on Tuesday 20th of November 2012 02:30:58 PM
Old 11-20-2012
Quote:
Originally Posted by jstnobdy
Hello!

To your first question, GPFS is a full device allocation, therefore, anything you wish to allocate will be consumed as an NSD.
Ah okay, that makes sense. If I have existing data on that device, will it wipe it all out once I add it to the cluster?
Quote:
Regarding your second question, yes, that disk is more than likely empty and therefore can be used for GPFS.

Finally, GPFS can run on one node (a single node quorum) and can have additional nodes added to it later. Make sure you have good time synchronization (xntpd) and decent performing disk storage.

Best regards,
jstnobdy

---------- Post updated at 09:02 PM ---------- Previous update was at 08:57 PM ----------

One more thing, GPFS is pretty tolerant, just make sure you define "dataOnly" and "metadataOnly" disks when you create your NSDs (mmcrnsd). In this case, allocate 'x'-amount of storage for dataOnly NSDs and a relatively small disk for metadataOnly.

Good luck. If you have any questions, let me know.
Thank you very much for the answer! Smilie
 

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VOTEQUORUM_QDISK_REGISTER(3)			    Corosync Cluster Engine Programmer's Manual 		      VOTEQUORUM_QDISK_REGISTER(3)

NAME
votequorum_qdisk_register - Registers a new quorum device SYNOPSIS
#include <corosync/votequorum.h> int votequorum_qdisk_register(votequorum_handle_t handle, char * name, unsigned int votes); DESCRIPTION
The votequorum_qdisk_register is used to register a new quorum device. A quorum device is an external way of adding votes to a small clus- ter. The quorum device is, in effect, a pseudo node in the cluster that provide votes based on some external device, usually a shared disk partition or perhaps a network router. This call creates the device but does not mark it active. votequorum_qdisk_poll must be called for the votes to be included in the quorum calculation. Note that it is the responsibility of the quorum device subsystem (not provided as part of votequorum) to keep all nodes informed of the quorum device status. RETURN VALUE
This call returns the CS_OK value if successful, otherwise an error is returned. ERRORS
The errors are undocumented. SEE ALSO
votequorum_overview(8), votequorum_initialize(3), votequorum_finalize(3), votequorum_dispatch(3), votequorum_fd_get(3), votequo- rum_qdisk_poll(3), votequorum_qdisk_unregister(3), votequorum_qdisk_getinfo(3), corosync Man Page 2009-01-26 VOTEQUORUM_QDISK_REGISTER(3)
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