- Community Home
- >
- Storage
- >
- Midrange and Enterprise Storage
- >
- StoreVirtual Storage
- >
- Re: P4300 G2 SAS Starter frequently looses quorum
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-03-2010 06:17 AM
тАО07-03-2010 06:17 AM
P4300 G2 SAS Starter frequently looses quorum
I have three ESX4U2 servers and two P4300 G2 storage nodes. FOM is running in VMware. Each host has two connections for iSCSI, each to an HP 2900-24G switch. The two HP switches are connected via a pair of 10gig trunks. Flow control is enabled on every port. Jumbo frames are disabled everywhere.
The P4300 G2's are bonded in ALB mode. The ESX servers are configured as per the now famous blog post. Two vmkernel NIC's both bound to the iSCSI software adapter and round robin path selection.
The configuration has shown great performance, however, about once per week at random times of the day (usually low activity periods) ESX briefly looses storage connectivity and opening the Lefthand CMC reveals that one of the two storage nodes is offline. After power cycling the downed node and looking at all of the log files it appears that storage node two lost communication with the FOM and first node. Lefthand support tells me that my network is at fault but I have everything configured (from what I can tell) properly. I also completely changed my network equipment from the original Cisco 3550-12T's I previously used (and experienced the same problems with).
The alert files show that the second node lost contact with both the FOM and the first storage node. The FOM and first storage node both record no connectivity with the second storage node.
More recently I discovered that immediately following one of these events, the HP switches report 6 packets/sec received and 3 packets/sec DEFERRED (flow control) on just the second storage node ports. This happens constantly until I power cycle the box.
I've been troubleshooting this for literally months and I've gotten approval to sell the Lefthand gear if a solution isn't found. I really don't want to do that but I must have a stable environment. I'm sure it's something unique to our environment but I just don't see what. Any ideas?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-03-2010 09:18 AM
тАО07-03-2010 09:18 AM
Re: P4300 G2 SAS Starter frequently looses quorum
Log a call with HP Support and ask them to elevate the case to lvl 3 (wtec).
Greetz,
Chris
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-04-2010 08:10 PM
тАО07-04-2010 08:10 PM
Re: P4300 G2 SAS Starter frequently looses quorum
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-04-2010 08:41 PM
тАО07-04-2010 08:41 PM
Re: P4300 G2 SAS Starter frequently looses quorum
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-04-2010 10:57 PM
тАО07-04-2010 10:57 PM
Re: P4300 G2 SAS Starter frequently looses quorum
I'm grasping at straws here but did I read in another post you had disabled spanning tree on the switches?
By all means, portfast the ports the servers and SAN connect to, and couple that with bpduguard for safety. But disabling spanning tree could well be preventing you from seeing an issue somewhere. If for example, those 10G trunks were misbehaving, who knows what the loop would do?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО07-05-2010 08:48 AM
тАО07-05-2010 08:48 AM
Re: P4300 G2 SAS Starter frequently looses quorum
All - support clued me in to a patch for the G2 series, patch 10078, that appears to fix this very issue (SAN NIC port suddenly dropping all packets). Last time I reached out to support the patch didn't exist. I'm installing now and hopefully this patch does the trick.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО09-20-2010 10:49 AM
тАО09-20-2010 10:49 AM
Re: P4300 G2 SAS Starter frequently looses quorum
I'm experiencing similar problems with LH G2 SAN.
Did the patch solve your problem?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-28-2011 07:38 PM
тАО04-28-2011 07:38 PM
Re: P4300 G2 SAS Starter frequently looses quorum
I'd be using some packet monitoring software with port mirror to see what the TCP traffic is doing.
Welcome to the problems of IP in the storage world. :)
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-29-2011 04:21 AM
тАО04-29-2011 04:21 AM
Re: P4300 G2 SAS Starter frequently looses quorum
With regards to flow control - we had no choice but to turn it on, Lefthand required it before bonding the gigabit ethernet ports.