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 IDE
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 comm
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