** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1693369
Title:
5U84 - ses driver isn't binding right - cannot blink lights on 1 of
the 2 5u84
Status in The Ubuntu-power-systems project:
In Progress
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Committed
Status in linux source package in Zesty:
Fix Committed
Status in linux source package in Artful:
Fix Released
Bug description:
== SRU Justification ==
This bug is resolved by commit 62e62ffd95539b9220894a7900a619e0f3ef4756.
Without this patch, the symlink in sysfs which binds a SAS device to an
enclosure
slot does not get created. This makes disk hotplug near impossible on large
JBOD disk drawers.
Commit 62e62ffd95 is also needed in Xenial. However, Xenial also needed some
prereq commits, so it's SRU will be sent separately.
Commit 62e62ffd95 is in mainline as of 4.13-rc1.
== Fix ==
commit 62e62ffd95539b9220894a7900a619e0f3ef4756
Author: Maurizio Lombardi <mlomb...@redhat.com>
Date: Tue Jun 27 11:53:27 2017 +0200
scsi: ses: do not add a device to an enclosure if
enclosure_add_links() fails.
== Regression Potential ==
This patch was also cc'd and applied to upstream stable, so there is
upstream confidence in it.
== Test Case ==
A test kernel was built with this patch and tested by the original bug
reporter.
The bug reporter states the test kernel resolved the bug.
This is a request to add the following upstream commit to both Ubuntu 16.04.1
and 16.04.2:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/scsi/ses.c?id=9373eba6cfae48911b977d14323032cd5d161aae
Without this patch, the symlink in sysfs which binds a SAS device to
an enclosure slot does not get created. This makes disk hotplug near
impossible on large JBOD disk drawers.
You should be able to do:
ls /sys/block/sdb/device/ | grep enclosure
and see something like:
enclosure_device:1
If you cd to this directory, you can then access the SES controls for
that slot to flash the LED to assist in locating the disk to replace a
failed disk.
Currently with 16.04.1 and 16.04.2, these symlinks are not getting
created.
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