Re: Background scan of sata drives

[Tejun Heo <htejun@gmail.com>]

Phillip Susi wrote:
> I seem to recall seeing mention flow by on the lkml at some point that 
> sata disks are now scanned in the background rather than blocking in the 
> modprobe, but that there is a new dummy module you can load that just 
> blocks until all drives have been scanned.  I tried but was unable to 
> find the thread that mentioned this, so does anyone know what that 
> module was?

Scanning during boot and module loading is blocking.  modprobe will wait 
in the kernel until the initial scan is complete.  But user initiated 
scan (echo - - - > /sys/class/scsi_host/hostX/scan) doesn't wait for 
completion.  Patch to make user scan blocking is pending.

-- 
tejun