Hello,
On Sat, Jul 21, 2012 at 02:15:56PM +0200, Matthias Prager wrote:
> Now I'm not sure this isn't taping over another bug. Which leads me to
> my question: What is the correct behavior?
>
> #1 Issuing a separate spin-up command (START UNIT?) prior to sending i/o
> by setting allow_restart=1 f
Hello Tejun,
Am 22.07.2012 19:31, schrieb Tejun Heo:>
> I haven't consulted SAT but it seems like a bug in SAS driver or
> firmware. If it's a driver bug, we better fix it there. If a
> firmware bug, working around those is one of major roles of drivers,
> so I think setting allow_restart is fin
在 Sat, 21 Jul 2012 06:31:54 +0800，James Bottomley
写道:
On Fri, 2012-07-20 at 16:24 +0800, gaoqiang wrote:
I'm using udev to manage my hard disks. but I'm confusing
about the "PATH_ID"
gaoqiang@h150:~$/lib/udev/path_id /block/sda
ID_PATH=pci-:01:00.0-scsi-0:0:0:0
the path_id is about di
> 在 Sat, 21 Jul 2012 06:31:54 +0800，James Bottomley
> 写道:
>
> > On Fri, 2012-07-20 at 16:24 +0800, gaoqiang wrote:
> >> I'm using udev to manage my hard disks. but I'm confusing
> >> about the "PATH_ID"
> >>
> >> gaoqiang@h150:~$/lib/udev/path_id /block/sda
> >> ID_PATH=pci-:01:00.0-scsi-0:0
The ODD can either be runtime resumed by the user or by a software
request. And for the latter part, we only support runtime resume the ODD
when the eject request is received. We did this in sr's block ioctl
function, this looks ugly.
Change this by runtime resuming the ODD in its open function an
When runtime resume a scsi device, if the device's driver has
implemented runtime resume callback, use that instead of the resume
callback.
sr driver needs this to properly do different things for system resume
and runtime resume.
Signed-off-by: Aaron Lu
---
drivers/scsi/scsi_pm.c | 14
Set the ODD's in kernel poll interval to 2s for the user in case the
user is using an old distro on which udev will not set the system wide
block parameter events_dfl_poll_msecs.
Signed-off-by: Aaron Lu
---
block/genhd.c | 23 +--
drivers/scsi/sr.c | 1 +
include
Here are some patches to make ZPODD easier to use for end users and
a fix for using ZPODD with system suspend.
Aaron Lu (5):
scsi: sr: fix for sr suspend and resume
scsi: sr: runtime pm when ODD is open/closed
scsi: sr: block events when runtime suspended
scsi: pm: use runtime resume callb
In sr_suspend, we do not need to do anything if it is not a runtime pm
request, so just return by checking the PM_EVENT_AUTO flag.
And in sr_resume, only reset the suspend_count back to 1 if the ODD is
waken up by the user, or the usage count of the scsi device will not
balance.
Signed-off-by: Aar
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