megaraid_sas : Error message from SYNC CACHE cmd fills up kernel log

2007-02-05 Thread Patro, Sumant
MegaRAID (MR) SAS Adapter FW is exposing VDs (Logical Disks) with WCE enabled in Mode Sense command for drives that are configured as WriteBack by the user. When the VDs are exported as Write Back drives, OS is sending Synchronize Cache command to the drives frequently. Per SCSI Spec, this

Re: megaraid_sas : Error message from SYNC CACHE cmd fills up kernel log

2007-02-05 Thread James Bottomley
On Mon, 2007-02-05 at 15:14 -0700, Patro, Sumant wrote: 1. Shouldn't the OS stop sending the sync cache cmd if it sees it is Failed with Invalid Command in sense info ? Possibly, but supporting a write back cache but not supporting the command to flush it is unusual (or more likely