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From: James Simmons <jsimmons@infradead.org>
To: Andreas Dilger <adilger@whamcloud.com>,
	Oleg Drokin <green@whamcloud.com>, NeilBrown <neilb@suse.de>
Cc: Lai Siyao <lai.siyao@whamcloud.com>,
	Lustre Development List <lustre-devel@lists.lustre.org>
Subject: [lustre-devel] [PATCH 09/13] lustre; obdclass: server qos penalty miscaculated
Date: Sat, 15 May 2021 09:06:06 -0400	[thread overview]
Message-ID: <1621083970-32463-10-git-send-email-jsimmons@infradead.org> (raw)
In-Reply-To: <1621083970-32463-1-git-send-email-jsimmons@infradead.org>

From: Lai Siyao <lai.siyao@whamcloud.com>

Server qos penalty calculation uses active target count, but it
should use server count, which will make it larger than expected,
then weight of targets are often 0, and finally cause MDT0 is
often chosen in qos allocation.

Fixes: 3f2a3e1d4 ("lustre: obdclass: lu_tgt_descs cleanup")
WC-bug-id: https://jira.whamcloud.com/browse/LU-13440
Lustre-commit: 0ccce7ecb72f847f ("LU-13440 obdclass: server qos penalty miscaculated")
Signed-off-by: Lai Siyao <lai.siyao@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/43385
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Hongchao Zhang <hongchao@whamcloud.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
 fs/lustre/obdclass/lu_tgt_descs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/lustre/obdclass/lu_tgt_descs.c b/fs/lustre/obdclass/lu_tgt_descs.c
index cb62ce4..9f33d22 100644
--- a/fs/lustre/obdclass/lu_tgt_descs.c
+++ b/fs/lustre/obdclass/lu_tgt_descs.c
@@ -633,7 +633,7 @@ int ltd_qos_update(struct lu_tgt_descs *ltd, struct lu_tgt_desc *tgt,
 	ltq->ltq_penalty += ltq->ltq_penalty_per_obj *
 			    ltd->ltd_lov_desc.ld_active_tgt_count;
 	svr->lsq_penalty += svr->lsq_penalty_per_obj *
-			    ltd->ltd_lov_desc.ld_active_tgt_count;
+			    qos->lq_active_svr_count;
 
 	/* Decrease all MDS penalties */
 	list_for_each_entry(svr, &qos->lq_svr_list, lsq_svr_list) {
-- 
1.8.3.1

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  parent reply	other threads:[~2021-05-15 13:06 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-15 13:05 [lustre-devel] [PATCH 00/13] lustre: sync to OpenSFS tree as of May 14, 2021 James Simmons
2021-05-15 13:05 ` [lustre-devel] [PATCH 01/13] lnet: Allow delayed sends James Simmons
2021-05-15 13:05 ` [lustre-devel] [PATCH 02/13] lustre: lov: correctly handling sub-lock init failure James Simmons
2021-05-15 13:06 ` [lustre-devel] [PATCH 03/13] lnet: Local NI must be on same net as next-hop James Simmons
2021-05-15 13:06 ` [lustre-devel] [PATCH 04/13] lnet: socklnd: add conns_per_peer parameter James Simmons
2021-05-15 13:06 ` [lustre-devel] [PATCH 05/13] lustre: readahead: export pages directly without RA James Simmons
2021-05-15 13:06 ` [lustre-devel] [PATCH 06/13] lustre: readahead: fix reserving for unaliged read James Simmons
2021-05-15 13:06 ` [lustre-devel] [PATCH 07/13] lustre: sec: rework includes for client encryption James Simmons
2021-05-15 13:06 ` [lustre-devel] [PATCH 08/13] lustre: ptlrpc: remove might_sleep() in sptlrpc_gc_del_sec() James Simmons
2021-05-15 13:06 ` James Simmons [this message]
2021-05-15 13:06 ` [lustre-devel] [PATCH 10/13] lustre: lmv: add default LMV inherit depth James Simmons
2021-05-15 13:06 ` [lustre-devel] [PATCH 11/13] lustre: lmv: qos stay on current MDT if less full James Simmons
2021-05-15 13:06 ` [lustre-devel] [PATCH 12/13] lnet: Correct the router ping interval calculation James Simmons
2021-05-15 13:06 ` [lustre-devel] [PATCH 13/13] lustre: llite: Introduce inode open heat counter James Simmons

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