On Fri, 2006-08-25 at 21:09 -0400, Douglas Gilbert wrote: > The ability to disable a phy (on a HBA or on an expander) > is also a very useful capability. Does the sas_transport > give us that capability? It could ... It's just another parameter to SMP_PHY_CONTROL. However, I'm just wiring up the existing functions ... feel free to send patches if you want new function. > There is a way to effectively disable a phy on a SAS disk > as well: use SEND DIAGNOSTIC to send the SAS protocol > specific diagnostic page to put the disk phy in CJTPAT > (jitter pattern) generation mode. However unless another > phy is accessible on that disk to clear that state, a > power cycle is needed to re-enable a phy in jitter pattern > generation mode. That doesn't sound terribly safe ... most SAS cages only connect up one of the internal ports, so effectively there's no way to terminate this for most SAS setups. James - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
