A patch in newer kernel (3.19 and later) has a fix for this as below:
commit 2484f40780b97df1b5eb09e78ce4efaa78b21875
Author: Dan McLeran <daniel.mcle...@intel.com>
Date: Tue Jul 1 09:33:32 2014 -0600
NVMe: Add shutdown timeout as module parameter.
The current implementation hard-codes the shutdown timeout to 2 seconds.
Some devices take longer than this to complete a normal shutdown.
Changing the shutdown timeout to a module parameter with a default
timeout of 5 seconds.
Signed-off-by: Dan McLeran <daniel.mcle...@intel.com>
Signed-off-by: Matthew Wilcox <matthew.r.wil...@intel.com>
Signed-off-by: Jens Axboe <ax...@fb.com>
However, this patch is not included in 3.13 or 3.16
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1465136
Title:
NVMe shutdown and suspend delay time is too short
Status in linux package in Ubuntu:
In Progress
Bug description:
A hardware vendor reported that NVMe didn't implement power management
correctly during shutdown/restart and suspend/resume as below:
=================================
However, when it comes to shutdown/restart, the Power Management Events (PME)
are not correctly implemented.
When the host (Linux/Driver) sends the PME_TURN_OFF message it should
wait for PME_TO_ACK from the device.
Microsoft Windows versions typically wait for 5 seconds.
The Linux OSes doesn't wait for the PME_TO_ACK from the device and
simply turns off the system instantly immediately after the
shutdown/restart.
This is not the way to treat PCIe storage devices. The host should allow the
device to properly shutdown. Otherwise the disk will go in to rebuild during
next power on which takes a while resulting in OS finding the device not
responding and disabling it and not loading the driver for it.
=================================
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1465136/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
