From: wang di <di.wang@xxxxxxxxx> In some cases, cl_default_mds_easize might be zero, especially for MDC connected to non-MDT0, then mdc might pack getattr RPC with zero eadatasize. If client is trying to access remote striped directory with zero eadatasize, MDT will not return layout information of the striped direcotry, which will be mis-regarded as non-striped directory. So we should use cl_max_mds_easize if cl_default_mds_easize is zero. Signed-off-by: wang di <di.wang@xxxxxxxxx> Reviewed-on: http://review.whamcloud.com/9862 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4847 Reviewed-by: Andreas Dilger <andreas.dilger@xxxxxxxxx> Signed-off-by: Oleg Drokin <oleg.drokin@xxxxxxxxx> --- drivers/staging/lustre/lustre/mdc/mdc_locks.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/staging/lustre/lustre/mdc/mdc_locks.c b/drivers/staging/lustre/lustre/mdc/mdc_locks.c index 41a18f5..1a8cd98 100644 --- a/drivers/staging/lustre/lustre/mdc/mdc_locks.c +++ b/drivers/staging/lustre/lustre/mdc/mdc_locks.c @@ -462,6 +462,7 @@ static struct ptlrpc_request *mdc_intent_getattr_pack(struct obd_export *exp, OBD_MD_FLRMTPERM : OBD_MD_FLACL); struct ldlm_intent *lit; int rc; + int easize; req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_LDLM_INTENT_GETATTR); @@ -482,12 +483,15 @@ static struct ptlrpc_request *mdc_intent_getattr_pack(struct obd_export *exp, lit = req_capsule_client_get(&req->rq_pill, &RMF_LDLM_INTENT); lit->opc = (__u64)it->it_op; + if (obddev->u.cli.cl_default_mds_easize > 0) + easize = obddev->u.cli.cl_default_mds_easize; + else + easize = obddev->u.cli.cl_max_mds_easize; + /* pack the intended request */ - mdc_getattr_pack(req, valid, it->it_flags, op_data, - obddev->u.cli.cl_default_mds_easize); + mdc_getattr_pack(req, valid, it->it_flags, op_data, easize); - req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, - obddev->u.cli.cl_default_mds_easize); + req_capsule_set_size(&req->rq_pill, &RMF_MDT_MD, RCL_SERVER, easize); if (client_is_remote(exp)) req_capsule_set_size(&req->rq_pill, &RMF_ACL, RCL_SERVER, sizeof(struct mdt_remote_perm)); -- 1.8.5.3 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
