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sknock
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MD3000i - Degraded channel / physical disk paths

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I have the Support files collected and need someone to take a look and tell me how to fix this. I will send via email to Dell support once I'm contacted.

Failure Entry 1: DEGRADED_DRIVE_PATH

Degraded physical disk paths:
  Channel: 0
     Related
physical disks:
(0, 4)

Individual Physical Disk - Degraded Path

Failure Entry 2: DEGRADED_DRIVE_CHANNEL


Storage array:  Array Name removed by me
  Degraded physical
disk channels:
0

Degraded Physical Disk Channel

 

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Moderator
Moderator

Re: MD3000i - Degraded channel / physical disk paths

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Hello sknock,

I will send you an email and i can review the logs for you.  

Please let us know if you have any other questions.

DELL-Sam L
Dell | Social Outreach Services - Enterprise
Download the Dell Quick Resource Locator app today to access PowerEdge support content on your mobile device! (iOS, Android, Windows)

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Moderator
Moderator

Re: MD3000i - Degraded channel / physical disk paths

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Hello sknock,

I will send you an email and i can review the logs for you.  

Please let us know if you have any other questions.

DELL-Sam L
Dell | Social Outreach Services - Enterprise
Download the Dell Quick Resource Locator app today to access PowerEdge support content on your mobile device! (iOS, Android, Windows)

sknock
1 Nickel

Re: MD3000i - Degraded channel / physical disk paths

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Sam took care of me on this.  Updated the RC/NVSRAM and HDD firmware to the latest release. Following the procedures carefully, especially making sure there is no I/O on the SAN, fixed the degraded path problem. This process took 2 hours to complete including shutting down VM's, placing ESX host in maint mode and bringing all back up again.

db2761
1 Nickel

RE: MD3000i - Degraded channel / physical disk paths

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Can I get some help with the same issue, please?  

Thanks in advance!

Dan

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Moderator
Moderator

RE: MD3000i - Degraded channel / physical disk paths

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Hello Dan,

If I can get you to gather a support bundle from your MD so that I can review it to see what is going on with your MD that would be great.  I will send you a private message to wich you can reply back with the logs.

Please let us know if you have any other questions.

DELL-Sam L
Dell | Social Outreach Services - Enterprise
Download the Dell Quick Resource Locator app today to access PowerEdge support content on your mobile device! (iOS, Android, Windows)

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Mauicat1
1 Copper

RE: MD3000i - Degraded channel / physical disk paths

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One more for you. I have the same issue - Degraded physical disk channels (0 and 1). Are you able to look at my support bundle?

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Mauicat1
1 Copper

RE: MD3000i - Degraded channel / physical disk paths

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I have the same issue. Can you help?

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Moderator
Moderator

RE: MD3000i - Degraded channel / physical disk paths

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Hello, Mauicat1.

Sounds like you may have a disk on the bus causing enough chatter to throw the Degraded Disk channel error. The first think we'd like to do is clear the errors.

The commands we're going to run are as follows:

show allPhysicalDiskChannels stats;  //- check the status of the channels

clear allPhysicalDiskChannels stats;  //- clear them all.

set physicalDiskChannel [0] status=optimal;  //-

set physicalDiskChannel [1] status=optimal;  //- We'll run this, and set them each to optimal

set physicalDiskChannel [2] status=optimal;  //-

set physicalDiskChannel [3] status=optimal;  //-

       show allPhysicalDiskChannels stats;  //- Check them again and verify they're clear.

After this if they start coming back, we need to see which drive is causing the chatter, and replace it.

Let me know how this goes for you.

Have a good rest of the day!

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Mauicat1
1 Copper

RE: MD3000i - Degraded channel / physical disk paths

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Did all those commands and the Recovery Guru error went away but the stats show error that are increasing. How do we identify the failing disk(s)?

Executing script...

DRIVE CHANNELS----------------------------

  SUMMARY

     CHANNEL  PORT              STATUS  

     1        In,Out,Expansion  Optimal  

     2        In,Out,Expansion  Optimal  

  DETAILS

     DRIVE CHANNEL 1

        Port: In, Out, Expansion

           Status: Optimal

           Max. Rate: 3 Gbps

           Current Rate: 3 Gbps

           Rate Control: Switched

           DRIVE COUNTS

              Total # of attached physical disks: 30

              Connected to: A (left), Port In

                 Attached physical disks: 15

                    Expansion enclosure: 2 (15 physical disks)

              Connected to: 0, Port Expansion

                 Attached physical disks: 15

                    Expansion enclosure: 0 (15 physical disks)

           CUMULATIVE ERROR COUNTS

              RAID Controller Module 0

                 Baseline time set:                       9/17/15 6:36:48 PM  

                 Sample period (hh:mm:ss):                00:14:00            

                 RAID Controller Module detected errors:  0                  

                 Physical Disk detected errors:           105                

                 Timeout errors:                          0                  

                 Total I/O count:                         238287              

              RAID Controller Module 1

                 Baseline time set:                       8/22/15 10:54:36 PM  

                 Sample period (hh:mm:ss):                00:13:50            

                 RAID Controller Module detected errors:  0                    

                 Physical Disk detected errors:           116                  

                 Timeout errors:                          0                    

                 Total I/O count:                         373937              

        DRIVE CHANNEL 2

           Port: In, Out, Expansion

              Status: Optimal

              Max. Rate: 3 Gbps

              Current Rate: 3 Gbps

              Rate Control: Switched

              DRIVE COUNTS

                 Total # of attached physical disks: 30

                 Connected to: B (right), Port In

                    Attached physical disks: 15

                       Expansion enclosure: 2 (15 physical disks)

                 Connected to: 1, Port Expansion

                    Attached physical disks: 15

                       Expansion enclosure: 0 (15 physical disks)

              CUMULATIVE ERROR COUNTS

                 RAID Controller Module 0

                    Baseline time set:                       9/17/15 6:36:48 PM  

                    Sample period (hh:mm:ss):                00:14:00            

                    RAID Controller Module detected errors:  0                  

                    Physical Disk detected errors:           118                

                    Timeout errors:                          0                  

                    Total I/O count:                         196528              

                 RAID Controller Module 1

                    Baseline time set:                       8/22/15 10:54:36 PM  

                    Sample period (hh:mm:ss):                00:13:50            

                    RAID Controller Module detected errors:  0                    

                    Physical Disk detected errors:           98                  

                    Timeout errors:                          0                    

                    Total I/O count:                         396944              

Script execution complete.

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Mauicat1
1 Copper

RE: MD3000i - Degraded channel / physical disk paths

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Did all those commands and the Recovery Guru error went away but now it is back. How do we identify the failing disk(s)?

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