Solved

Freenas iscsi volume corruption

Posted on 2012-04-02
4
1,884 Views
Last Modified: 2012-06-21
Hi there

I have the following environment:

Freenas 8.0.3 sharing an ISCSI target to a Windows server 2008 R2 64bit server, I am using the windows iscsi target software built in to windows.

I have connected it up and an running file transfers to the volume. Everything works ok, for a while.

Windows gives me this error:

"The file or directory is corrupt or unreadable"

and the logs on the freenas server show:


apr 2 13:25:11 ****-bsd-nas1 istgt[2965]: istgt_iscsi.c: 777:istgt_iscsi_write_pdu_internal: ***ERROR*** iscsi_write() failed (errno=32)
Apr 2 13:25:11 ****-bsd-nas1 istgt[2965]: istgt_iscsi.c:3518:istgt_iscsi_task_response: ***ERROR*** iscsi_write_pdu() failed


I also have an ESX 4.1 server using this freenas for ISCSI storage, and this is not having any issues.

If I run a repair on the volume, it is accessible and usable again until the next instance of this error. Any ideas?
0
Comment
Question by:alexanderfoti
  • 2
  • 2
4 Comments
 
LVL 40

Expert Comment

by:noci
ID: 37799771
Are you aware of this freenas ticket: [ it seem related ]
http://support.freenas.org/ticket/1104

Which seems to hint at capacity problems.
0
 
LVL 1

Author Comment

by:alexanderfoti
ID: 37799801
Many thanks, I have had a look at that, and have gone through the diagnostics outlined in the ticket.

My box is considerably more powerful (2x 3.2ghz xeon's), also my disk latency never seems to go above 3ms
0
 
LVL 40

Accepted Solution

by:
noci earned 500 total points
ID: 37802852
And how about the network? Switches? autonegotiate vs. fixed speed/duplex?
if auto negotiate, are settings correct at both ends of a cable.
Is iscsi over a separate [V]LAN?[better] or mixed with other traffic.
Is flowcontrol disabled?
0
 
LVL 1

Author Comment

by:alexanderfoti
ID: 37834551
The networks are seperate, switches are set to 1000 meg full duplex and flow control was disabled, but the volumes kept corrupting, we are now running server 2008 on our Storage server and this has resolved all problems. It seems as though the IET Iscsi implementation is not reliable. :(
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The way I use Experts Exchange to assist me in analyzing and diagnosing a problem is I first enter a Verbose Question at Experts Exchange like: Office 2007 will hang when opening and saving files I then launch WordPad (any text editor will do) an…
Note: for this to work properly you need to use a Cross-Over network cable. 1. Connect both servers S1 and S2 on the second network slots respectively. Note that you can use the 1st slots but usually these would be occupied by the Service Provide…
Windows 8 comes with a dramatically different user interface known as Metro. Notably missing from the new interface is a Start button and Start Menu. Many users do not like it, much preferring the interface of earlier versions — Windows 7, Windows X…
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

25 Experts available now in Live!

Get 1:1 Help Now