diff options
| author | Cheng Shao <cheng_shao@xyratex.com> | 2014-06-22 21:32:13 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-26 20:45:05 -0400 |
| commit | 06e4f6ca97cb52a863799dc05e506967fd3371c4 (patch) | |
| tree | 50fe5da81e0e3d0956336b8ade842f38aa8a565a | |
| parent | 5c689e689baa5a8a239a8b5d29c3fb77aa62f134 (diff) | |
staging/lustre/mgc: replace hard-coded MGC_ENQUEUE_LIMIT value
During client mount, the client will send an LDLM_ENQUEUE request to
MGS with send delay set to MGC_ENQUEUE_LIMIT, which is hard coded to
50 seconds. On the other hand, the interval for pinger is deduced from
obd_timeout. When obd_timeout is configured for a longer period of
time, so does the pinger. We know that connecting to the secondary MGS
node is triggered by the pinger. Now that we have a longer interval,
the pinger will not be able to try the secondary before the
LDLM_ENQUEUE request fails the mount using the same delay limit.
This code change will replace the hard-coded send delay being
mentioned above with a value that is long enough to give the client a
chance to connect to the secondary MGS if exists.
Signed-off-by: Cheng Shao <cheng_shao@xyratex.com>
Reviewed-on: http://review.whamcloud.com/9217
Xyratex-bug-id: MRP-1516
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4582
Reviewed-by: Ryan Haasken <haasken@cray.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Signed-off-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/lustre/lustre/mgc/mgc_request.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/staging/lustre/lustre/mgc/mgc_request.c b/drivers/staging/lustre/lustre/mgc/mgc_request.c index a806aeffe026..28960f99ebb9 100644 --- a/drivers/staging/lustre/lustre/mgc/mgc_request.c +++ b/drivers/staging/lustre/lustre/mgc/mgc_request.c @@ -950,7 +950,10 @@ static int mgc_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc, } /* Not sure where this should go... */ -#define MGC_ENQUEUE_LIMIT 50 +/* This is the timeout value for MGS_CONNECT request plus a ping interval, such + * that we can have a chance to try the secondary MGS if any. */ +#define MGC_ENQUEUE_LIMIT (INITIAL_CONNECT_TIMEOUT + (AT_OFF ? 0 : at_min) \ + + PING_INTERVAL) #define MGC_TARGET_REG_LIMIT 10 #define MGC_SEND_PARAM_LIMIT 10 |