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Questions about setting up GPFS
Post 302733475 by bstring on Tuesday 20th of November 2012 02:30:58 PM
11-20-2012
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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.
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.
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LEARN ABOUT CENTOS
votequorum_overview
VOTEQUORUM_OVERVIEW(8) Corosync Cluster Engine Programmer's Manual VOTEQUORUM_OVERVIEW(8) NAME
votequorum_overview - Votequorum Library Overview OVERVIEW
The votequorum library is delivered with the corosync project. It is the external interface to the vote-based quorum service. This service is optionally loaded into all nodes in a corosync cluster to avoid split-brain situations. It does this by having a number of votes assigned to each system in the cluster and ensuring that only when a majority of the votes are present, cluster operations are allowed to proceed. The library provides a mechanism to: * Query the quorum status * Get a list of nodes known to the quorum service * Receive notifications of quorum state changes * Change the number of votes assigned to a node * Change the number of expected votes for a cluster to be quorate * Connect an additional quorum device to allow small clusters to remain quorate during node outages. BUGS
No known bugs at the time of writing. The authors are from outerspace. Deal with it. SEE ALSO
corosync-quorumtool(8), votequorum(5), votequorum_initialize(3), votequorum_finalize(3), votequorum_getinfo(3), votequorum_trackstart(3), votequorum_trackstop(3), votequorum_fd_get(3), votequorum_dispatch(3), votequorum_context_set(3), votequorum_context_get(3), votequo- rum_setexpected(3), votequorum_setvotes(3) corosync Man Page 2012-01-12 VOTEQUORUM_OVERVIEW(8)