Commit bcef118e authored by Oleg Drokin's avatar Oleg Drokin Committed by Greg Kroah-Hartman
Browse files

staging/lustre/obdclass: Move AT controls from sysctl to sysfs 



Adaptive Timeouts controls are being moved from /proc/sys/lustre
to /sys/fs/lustre

Signed-off-by: default avatarOleg Drokin <green@linuxhacker.ru>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 9e7fa149

drivers/staging/lustre/lustre/obdclass/linux/linux-sysctl.c

+10 −35
Original line number Diff line number Diff line
@@ -138,44 +138,14 @@ LUSTRE_RW_ATTR(max_dirty_mb); 
LUSTRE_STATIC_UINT_ATTR(debug_peer_on_timeout, &obd_debug_peer_on_timeout);

LUSTRE_STATIC_UINT_ATTR(dump_on_timeout, &obd_dump_on_timeout);

LUSTRE_STATIC_UINT_ATTR(dump_on_eviction, &obd_dump_on_eviction);

LUSTRE_STATIC_UINT_ATTR(at_min, &at_min);

LUSTRE_STATIC_UINT_ATTR(at_max, &at_max);

LUSTRE_STATIC_UINT_ATTR(at_extra, &at_extra);

LUSTRE_STATIC_UINT_ATTR(at_early_margin, &at_early_margin);

LUSTRE_STATIC_UINT_ATTR(at_history, &at_history);



#ifdef CONFIG_SYSCTL

static struct ctl_table obd_table[] = {

	{

		.procname = "at_min",

		.data     = &at_min,

		.maxlen   = sizeof(int),

		.mode     = 0644,

		.proc_handler = &proc_dointvec,

	},

	{

		.procname = "at_max",

		.data     = &at_max,

		.maxlen   = sizeof(int),

		.mode     = 0644,

		.proc_handler = &proc_dointvec,

	},

	{

		.procname = "at_extra",

		.data     = &at_extra,

		.maxlen   = sizeof(int),

		.mode     = 0644,

		.proc_handler = &proc_dointvec,

	},

	{

		.procname = "at_early_margin",

		.data     = &at_early_margin,

		.maxlen   = sizeof(int),

		.mode     = 0644,

		.proc_handler = &proc_dointvec,

	},

	{

		.procname = "at_history",

		.data     = &at_history,

		.maxlen   = sizeof(int),

		.mode     = 0644,

		.proc_handler = &proc_dointvec,

	},

	{}

};
@@ -197,6 +167,11 @@ static struct attribute *lustre_attrs[] = { 
	&lustre_sattr_debug_peer_on_timeout.u.attr,

	&lustre_sattr_dump_on_timeout.u.attr,

	&lustre_sattr_dump_on_eviction.u.attr,

	&lustre_sattr_at_min.u.attr,

	&lustre_sattr_at_max.u.attr,

	&lustre_sattr_at_extra.u.attr,

	&lustre_sattr_at_early_margin.u.attr,

	&lustre_sattr_at_history.u.attr,

	NULL,

};

drivers/staging/lustre/sysfs-fs-lustre

+53 −0
Original line number Diff line number Diff line
@@ -90,6 +90,59 @@ Description: 
		This is useful if yout debug buffer typically rolls over

		 by the time you notice the eviction event.



What:		/sys/fs/lustre/at_min

Date:		July 2015

Contact:	"Oleg Drokin" <oleg.drokin@intel.com>

Description:

		Controls minimum adaptive timeout in seconds. If you encounter

		a case where clients timeout due to server-reported processing

		time being too short, you might consider increasing this value.

		One common case of this if the underlying network has

		unpredictable long delays.

		Default: 0



What:		/sys/fs/lustre/at_max

Date:		July 2015

Contact:	"Oleg Drokin" <oleg.drokin@intel.com>

Description:

		Controls maximum adaptive timeout in seconds. If at_max timeout

		is reached for an RPC, the RPC will time out.

		Some genuinuely slow network hardware might warrant increasing

		this value.

		Setting this value to 0 disables Adaptive Timeouts

		functionality and old-style obd_timeout value is then used.

		Default: 600



What:		/sys/fs/lustre/at_extra

Date:		July 2015

Contact:	"Oleg Drokin" <oleg.drokin@intel.com>

Description:

		Controls how much extra time to request for unfinished requests

		in processing in seconds. Normally a server-side parameter, it

		is also used on the client for responses to various LDLM ASTs

		that are handled with a special server thread on the client.

		This is a way for the servers to ask the clients not to time

		out the request that reached current servicing time estimate

		yet and give it some more time.

		Default: 30



What:		/sys/fs/lustre/at_early_margin

Date:		July 2015

Contact:	"Oleg Drokin" <oleg.drokin@intel.com>

Description:

		Controls when to send the early reply for requests that are

		about to timeout as an offset to the estimated service time in

		seconds..

		Default: 5



What:		/sys/fs/lustre/at_history

Date:		July 2015

Contact:	"Oleg Drokin" <oleg.drokin@intel.com>

Description:

		Controls for how many seconds to remember slowest events

		encountered by adaptive timeouts code.

		Default: 600



What:		/sys/fs/lustre/llite/<fsname>-<uuid>/blocksize

Date:		May 2015

Contact:	"Oleg Drokin" <oleg.drokin@intel.com>