Messages in this thread | | | Date | Thu, 25 Jun 2015 16:52:36 +0800 | Subject | Re: Stop SSD from waiting for "Spinning up disk..." | From | Jeff Chua <> |
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On Thu, Jun 25, 2015 at 2:08 PM, Martin Steigerwald <martin@lichtvoll.de> wrote: > Am Mittwoch, 24. Juni 2015, 18:41:52 schrieb Greg Kroah-Hartman: >> On Thu, Jun 25, 2015 at 07:55:45AM +0800, Jeff Chua wrote: >> > On Thu, Jun 25, 2015 at 12:28 AM, Greg Kroah-Hartman >> > >> > <gregkh@linuxfoundation.org> wrote: >> > > On Thu, Jun 25, 2015 at 12:22:47AM +0800, Jeff Chua wrote: >> > >> Both sda and sdb have the same SSD model. >> > > >> > > That's a bug in your USB bridge chip, odds are it is not reporting the >> > > value properly. There's nothing the scsi core or USB stack can do >> > > about >> > > this, sorry. Please complain to the hardware manufacturer. >> > >> > There are workaround boot cmdline parameters for other things ... any >> > chance to consider one to fix broken rotational option? I'm not sure >> > how many out there are broken, but I really would like a faster way to >> > access my USB SSD without waiting for the "disk spinup". >> >> Just like module paramaters, boot command lines are not for device >> specific attributes, sorry. Again, please contact the manufacturer to >> get this fixed. We can't add a quirk for this bridge because it would >> not work if you really put a rotational disk behind it. > > How about a way to override it in sysfs directly during runtime just for a > device individually, like choosing an I/O scheduler for example? > >> Given the cheap cost of these types of bridges, I recommend just getting >> one that works. > > That is an option as well and may educate hardware manufacturers to look a > bit better at the quality of those devices (at least then Linux market share > in that market increases).
I just needed something. "throwing" those cheap USB3 ... like I've a bunch of them. It's just a waste... and they are perfectly fast "uas" interfaces!
Thanks, Jeff.
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