Bug 526241

Summary: Add SUN CSM100_R_FC to supported RDAC devices.
Product: Red Hat Enterprise Linux 5 Reporter: Wade Mealing <wmealing>
Component: kernelAssignee: Rob Evers <revers>
Status: CLOSED DUPLICATE QA Contact: Red Hat Kernel QE team <kernel-qe>
Severity: medium Docs Contact:
Priority: low    
Version: 5.4CC: dzickus, tao
Target Milestone: rc   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2009-10-01 15:35:13 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
enable support for the aforementioned sun device. none

Description Wade Mealing 2009-09-29 12:53:56 UTC
Description of problem:

The sun CSM100_R_FC device is not listed as a supported rdac device.  It is currently listed upstream.

Version-Release number of selected component (if applicable):

Fix attempted on 2.6.18-166

How reproducible:

Every time.

Steps to Reproduce:
1. Configure multipath to use new dh_rdac
2. Wait
3. Fail device
  
Actual results:

d 7:0:0:100: rdac Dettached
sd 8:0:0:100: rdac Dettached
device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded.
device-mapper: multipath: Failing path 8:32.
device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded.
device-mapper: multipath: Failing path 8:48.
device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded.
device-mapper: multipath: Failing path 8:32.
device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded.
device-mapper: multipath: Failing path 8:48.
device-mapper: multipath: Cannot failover device because scsi_dh_rdac was not loaded.
device-mapper: multipath: Failing path 8:32.
Buffer I/O error on device dm-10, logical block 1545
lost page write due to I/O error on dm-10
Aborting journal on device dm-10.
Buffer I/O error on device dm-10, logical block 1545
lost page write due to I/O error on dm-10


Expected results:

Sep 29 13:46:56 cerberus kernel: device-mapper: multipath: Using scsi_dh module scsi_dh_rdac for failover/failback and device management.
Sep 29 13:46:56 cerberus multipathd: sanvol: load table [0 103473152 multipath 1 queue_if_no_path 1 rdac 2 1 round-robin 0 1 1 8:32 10000 round-robin 0 1 1 8:48 100
Sep 29 13:46:56 cerberus multipathd: dm-9: add map (uevent)
Sep 29 13:46:56 cerberus multipathd: dm-9: devmap already registered
Sep 29 13:47:06 cerberus multipathd: 8:32: reinstated
Sep 29 13:47:06 cerberus multipathd: 8:48: reinstated
Sep 29 13:48:27 cerberus kernel: sd 7:0:0:100: rdac: AVT mode detected
Sep 29 13:48:41 cerberus multipathd: 8:32: reinstated
Sep 29 13:48:41 cerberus multipathd: 8:48: reinstated
Sep 29 13:50:55 cerberus multipathd: dm-10: add map (uevent)

Additional information:

There are other SANS that are mentioned in the upstream configuration that should work, although these have not been backported as I have not had customer verification on if it works.

Comment 1 Wade Mealing 2009-09-29 12:58:47 UTC
Created attachment 363002 [details]
enable support for the aforementioned sun device.

Comment 4 Rob Evers 2009-10-01 15:35:13 UTC

*** This bug has been marked as a duplicate of bug 524335 ***