[MTP] Multi-Port Monitor Data Array Failure

Document ID : KB000046903
Last Modified Date : 14/02/2018
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Multi-Port Monitor shows /dev/sdb1 or /dev/sdb2 not mounting on the System status page.

Multi-Port Monitor not able to output PCAP files from the Analysis page (10.5+)

nqnapacapd log shows the following error:

 [Error] DiskThread 0: file write errors on 60 of 60 capture files.


CentOS 5.X or 6.X


The root cause of this issue is an integrity/hardware issue with the data array. This issue is very common on CA6000 Multi-Port machines and also occurs regularly after MTP 10.3 upgrades.


1. Ensure that the Adaptec Raid Monitoring Utility is installed on your Multi-Port Monitor.

     a) To test if the utility is installed, see if /usr/StorMan/arcconf exists on the machine

     b) If that directory does not exist, refer to the Multi-Port Monitor installation guide for instructions on how to 'Enable RAID              Monitoring'


2. Using the Adaptec Raid Monitoring Utility, verify the status of the hardware (Raid Controller, Hard drives, Batteries, etc.) on the data array

     a) /usr/StorMan/arcconf GETCONFIG 2 AL

     b) If everything is showing 'OPTIMAL', then proceed to Step 3.

     c) If you are seeing any type of error in this log, you are most likely experiencing an issue with the hardware and should                open a ticket with CA Support for a potential repair / replacement


3. Verify the proper entries are present within the /dev/ directory

     a) CA6000 - /dev/sdb1

     b) CA6300 - /dev/sdb2


4. If the entry is missing from the /dev/ directory, you must recreate the partition using parted.

     a) CA6000 (sdb1) - 

     /sbin/parted /dev/sdb -s mklabel gpt

     /sbin/parted /dev/sdb -s mkpart primary xfs $END 100%

     /sbin/mkfs.xfs -l size=32m,version=2 -d agcount=256 -f /dev/sdb1

     mkdir -p /data

     mount /dev/sdb1 /data

     mkdir /data/capture

     mkdir /data/nq_capture/capture (MTP 10.4+)


     b) CA6300 (sdb2) - 

     /sbin/parted /dev/sdb -s mklabel gpt

     /sbin/parted /dev/sdb -s mkpart primary xfs $END 100%

     /sbin/mkfs.xfs -l size=32m,version=2 -d agcount=256 -f /dev/sdb2

     mkdir -p /data

     mount /dev/sdb2 /data

     mkdir /data/capture

      mkdir /data/nq_capture/capture (MTP 10.4+)


5. Ensure that you are now seeing /sdb1 (CA6000) or /sdb2 (CA6300) as mounted in the 'Filesystem' section of your 'System Status" page on the MTP GUI.