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

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Message-ID: <ZeYJRG3DBJlL3004@google.com>
Date: Mon, 4 Mar 2024 09:47:48 -0800
From: Jaegeuk Kim <jaegeuk@...nel.org>
To: linux-kernel@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net
Subject: Re: [PATCH 3/5] f2fs: print zone status in string and some log

On 02/23, Jaegeuk Kim wrote:
> No functional change, but add some more logs.
> 
> Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
> ---
>  fs/f2fs/segment.c | 34 ++++++++++++++++++++++++----------
>  fs/f2fs/super.c   |  1 +
>  2 files changed, 25 insertions(+), 10 deletions(-)
> 
> diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
> index d4f228e6f771..6d586ae8b55f 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] = {

Added static.

> +	[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,
> @@ -4928,18 +4938,22 @@ static int check_zone_write_pointer(struct f2fs_sb_info *sbi,
>  	zone_block = fdev->start_blk + (zone->start >> log_sectors_per_block);
>  	zone_segno = GET_SEGNO(sbi, zone_block);
>  
> +	/*
> +	 * Get # of valid block of the zone.
> +	 */
> +	valid_block_cnt = get_valid_blocks(sbi, zone_segno, true);
> +
>  	/*
>  	 * 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)))
> +	    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;
> -
> -	/*
> -	 * Get # of valid block of the zone.
> -	 */
> -	valid_block_cnt = get_valid_blocks(sbi, zone_segno, true);
> +	}
>  
>  	if ((!valid_block_cnt && zone->cond == BLK_ZONE_COND_EMPTY) ||
>  	    (valid_block_cnt && zone->cond == BLK_ZONE_COND_FULL))
> @@ -4947,8 +4961,8 @@ 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 +4979,8 @@ 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.rc0.258.g7320e95886-goog