linux-kernel - Re: [PATCH 3/5 v2] f2fs: print zone status in string and some log

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Message-ID: <Zd0WLOe89pByO7yX@google.com>
Date: Mon, 26 Feb 2024 14:52:28 -0800
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: linux-kernel@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [PATCH 3/5 v2] f2fs: print zone status in string and some log

No functional change, but add some more logs.

Reviewed-by: Chao Yu <chao@...nel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
---

 from v1:
  - avoid unnecessary log per Daeho's comment

 fs/f2fs/segment.c | 27 +++++++++++++++++++++------
 fs/f2fs/super.c   |  1 +
 2 files changed, 22 insertions(+), 6 deletions(-)

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index d4f228e6f771..31a9e7db19e3 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -4912,6 +4912,16 @@ static int sanity_check_curseg(struct f2fs_sb_info *sbi)
 }
 
 #ifdef CONFIG_BLK_DEV_ZONED
+const char *f2fs_zone_status[BLK_ZONE_COND_OFFLINE + 1] = {
+	[BLK_ZONE_COND_NOT_WP]		= "NOT_WP",
+	[BLK_ZONE_COND_EMPTY]		= "EMPTY",
+	[BLK_ZONE_COND_IMP_OPEN]	= "IMPLICITE_OPEN",
+	[BLK_ZONE_COND_EXP_OPEN]	= "EXPLICITE_OPEN",
+	[BLK_ZONE_COND_CLOSED]		= "CLOSED",
+	[BLK_ZONE_COND_READONLY]	= "READONLY",
+	[BLK_ZONE_COND_FULL]		= "FULL",
+	[BLK_ZONE_COND_OFFLINE]		= "OFFLINE",
+};
 
 static int check_zone_write_pointer(struct f2fs_sb_info *sbi,
 				    struct f2fs_dev_info *fdev,
@@ -4932,14 +4942,19 @@ static int check_zone_write_pointer(struct f2fs_sb_info *sbi,
 	 * Skip check of zones cursegs point to, since
 	 * fix_curseg_write_pointer() checks them.
 	 */
-	if (zone_segno >= MAIN_SEGS(sbi) ||
-	    IS_CURSEC(sbi, GET_SEC_FROM_SEG(sbi, zone_segno)))
+	if (zone_segno >= MAIN_SEGS(sbi))
 		return 0;
 
 	/*
 	 * Get # of valid block of the zone.
 	 */
 	valid_block_cnt = get_valid_blocks(sbi, zone_segno, true);
+	if (IS_CURSEC(sbi, GET_SEC_FROM_SEG(sbi, zone_segno))) {
+		f2fs_notice(sbi, "Open zones: valid block[0x%x,0x%x] cond[%s]",
+				zone_segno, valid_block_cnt,
+				f2fs_zone_status[zone->cond]);
+		return 0;
+	}
 
 	if ((!valid_block_cnt && zone->cond == BLK_ZONE_COND_EMPTY) ||
 	    (valid_block_cnt && zone->cond == BLK_ZONE_COND_FULL))
@@ -4947,8 +4962,8 @@ static int check_zone_write_pointer(struct f2fs_sb_info *sbi,
 
 	if (!valid_block_cnt) {
 		f2fs_notice(sbi, "Zone without valid block has non-zero write "
-			    "pointer. Reset the write pointer: cond[0x%x]",
-			    zone->cond);
+			    "pointer. Reset the write pointer: cond[%s]",
+			    f2fs_zone_status[zone->cond]);
 		ret = __f2fs_issue_discard_zone(sbi, fdev->bdev, zone_block,
 					zone->len >> log_sectors_per_block);
 		if (ret)
@@ -4965,8 +4980,8 @@ static int check_zone_write_pointer(struct f2fs_sb_info *sbi,
 	 * selected for write operation until it get discarded.
 	 */
 	f2fs_notice(sbi, "Valid blocks are not aligned with write "
-		    "pointer: valid block[0x%x,0x%x] cond[0x%x]",
-		    zone_segno, valid_block_cnt, zone->cond);
+		    "pointer: valid block[0x%x,0x%x] cond[%s]",
+		    zone_segno, valid_block_cnt, f2fs_zone_status[zone->cond]);
 
 	ret = blkdev_zone_mgmt(fdev->bdev, REQ_OP_ZONE_FINISH,
 				zone->start, zone->len, GFP_NOFS);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index 4d03ce1109ad..fc7f1a9fbbda 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -4674,6 +4674,7 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent)
 	 * check zoned block devices' write pointer consistency.
 	 */
 	if (!f2fs_readonly(sb) && f2fs_sb_has_blkzoned(sbi)) {
+		f2fs_notice(sbi, "Checking entire write pointers");
 		err = f2fs_check_write_pointer(sbi);
 		if (err)
 			goto free_meta;
-- 
2.44.0.rc1.240.g4c46232300-goog