The GOOD commit (found via a git bisect) is the following :
git show e2c7b433f729cedb32514480af8cbdf2fe5cf264
commit e2c7b433f729cedb32514480af8cbdf2fe5cf264
Author: Yadan Fan <yd...@suse.com>
Date: Fri Jun 23 17:40:05 2017 +0800
scsi: hpsa: limit transfer length to 1MB
The hpsa firmware will bypass the cache for any request larger than 1MB,
so we should cap the request size to avoid any performance degradation
in kernels later than v4.3
This degradation is caused from d2be537c3ba3568acd79cd178327b842e60d035e,
which changed max_sectors_kb to 1280k, but the hardware is able to work
fine with it, so the true fix should be from hpsa driver.
Signed-off-by: Yadan Fan <yd...@suse.com>
Reviewed-by: Johannes Thumshirn <jthumsh...@suse.de>
Acked-by: Don Brace <don.br...@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.peter...@oracle.com>
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 8914eab..4f7cdb2 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -938,7 +938,7 @@ static struct scsi_host_template hpsa_driver_template = {
#endif
.sdev_attrs = hpsa_sdev_attrs,
.shost_attrs = hpsa_shost_attrs,
- .max_sectors = 8192,
+ .max_sectors = 1024,
.no_write_same = 1,
};
** Also affects: linux (Ubuntu Artful)
Importance: Medium
Assignee: Eric Desrochers (slashd)
Status: In Progress
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Zesty)
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1720359
Title:
Controller lockup detected on ProLiant DL380 Gen9 with P440 Controller
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1720359/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
