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: Oleg Drokin <green@linuxhacker.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -138,44 +138,14 @@ LUSTRE_RW_ATTR(max_dirty_mb);
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LUSTRE_STATIC_UINT_ATTR(debug_peer_on_timeout, &obd_debug_peer_on_timeout);
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LUSTRE_STATIC_UINT_ATTR(dump_on_timeout, &obd_dump_on_timeout);
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LUSTRE_STATIC_UINT_ATTR(dump_on_eviction, &obd_dump_on_eviction);
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LUSTRE_STATIC_UINT_ATTR(at_min, &at_min);
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LUSTRE_STATIC_UINT_ATTR(at_max, &at_max);
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LUSTRE_STATIC_UINT_ATTR(at_extra, &at_extra);
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LUSTRE_STATIC_UINT_ATTR(at_early_margin, &at_early_margin);
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LUSTRE_STATIC_UINT_ATTR(at_history, &at_history);
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#ifdef CONFIG_SYSCTL
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static struct ctl_table obd_table[] = {
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{
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.procname = "at_min",
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.data = &at_min,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec,
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},
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{
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.procname = "at_max",
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.data = &at_max,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec,
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},
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{
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.procname = "at_extra",
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.data = &at_extra,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec,
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},
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{
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.procname = "at_early_margin",
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.data = &at_early_margin,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec,
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},
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{
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.procname = "at_history",
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.data = &at_history,
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.maxlen = sizeof(int),
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.mode = 0644,
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.proc_handler = &proc_dointvec,
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},
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{}
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};
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@ -197,6 +167,11 @@ static struct attribute *lustre_attrs[] = {
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&lustre_sattr_debug_peer_on_timeout.u.attr,
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&lustre_sattr_dump_on_timeout.u.attr,
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&lustre_sattr_dump_on_eviction.u.attr,
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&lustre_sattr_at_min.u.attr,
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&lustre_sattr_at_max.u.attr,
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&lustre_sattr_at_extra.u.attr,
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&lustre_sattr_at_early_margin.u.attr,
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&lustre_sattr_at_history.u.attr,
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NULL,
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};
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@ -90,6 +90,59 @@ Description:
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This is useful if yout debug buffer typically rolls over
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by the time you notice the eviction event.
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What: /sys/fs/lustre/at_min
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Date: July 2015
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Contact: "Oleg Drokin" <oleg.drokin@intel.com>
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Description:
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Controls minimum adaptive timeout in seconds. If you encounter
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a case where clients timeout due to server-reported processing
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time being too short, you might consider increasing this value.
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One common case of this if the underlying network has
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unpredictable long delays.
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Default: 0
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What: /sys/fs/lustre/at_max
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Date: July 2015
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Contact: "Oleg Drokin" <oleg.drokin@intel.com>
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Description:
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Controls maximum adaptive timeout in seconds. If at_max timeout
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is reached for an RPC, the RPC will time out.
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Some genuinuely slow network hardware might warrant increasing
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this value.
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Setting this value to 0 disables Adaptive Timeouts
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functionality and old-style obd_timeout value is then used.
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Default: 600
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What: /sys/fs/lustre/at_extra
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Date: July 2015
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Contact: "Oleg Drokin" <oleg.drokin@intel.com>
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Description:
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Controls how much extra time to request for unfinished requests
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in processing in seconds. Normally a server-side parameter, it
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is also used on the client for responses to various LDLM ASTs
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that are handled with a special server thread on the client.
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This is a way for the servers to ask the clients not to time
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out the request that reached current servicing time estimate
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yet and give it some more time.
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Default: 30
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What: /sys/fs/lustre/at_early_margin
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Date: July 2015
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Contact: "Oleg Drokin" <oleg.drokin@intel.com>
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Description:
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Controls when to send the early reply for requests that are
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about to timeout as an offset to the estimated service time in
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seconds..
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Default: 5
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What: /sys/fs/lustre/at_history
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Date: July 2015
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Contact: "Oleg Drokin" <oleg.drokin@intel.com>
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Description:
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Controls for how many seconds to remember slowest events
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encountered by adaptive timeouts code.
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Default: 600
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What: /sys/fs/lustre/llite/<fsname>-<uuid>/blocksize
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Date: May 2015
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Contact: "Oleg Drokin" <oleg.drokin@intel.com>
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