2024-03-05 00:18:41

by Jaegeuk Kim

Subject: [PATCH] f2fs: add a proc entry show disk map

This patch adds the disk map of block address ranges configured by multiple
partitions.

Signed-off-by: Jaegeuk Kim <[email protected]>
---
fs/f2fs/sysfs.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 10f308b3128f..e81af6adb85b 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -1492,6 +1492,27 @@ static int __maybe_unused discard_plist_seq_show(struct seq_file *seq,
return 0;
}

+static int __maybe_unused disk_map_seq_show(struct seq_file *seq,
+ void *offset)
+{
+ struct super_block *sb = seq->private;
+ struct f2fs_sb_info *sbi = F2FS_SB(sb);
+ int i;
+
+ seq_puts(seq, "Disk Map for multi devices:\n");
+ if (!f2fs_is_multi_device(sbi))
+ return 0;
+
+ for (i = 0; i < sbi->s_ndevs; i++) {
+ seq_printf(seq, "%2d (zoned=%d): %20x - %20x",
+ i, bdev_is_zoned(FDEV(i).bdev),
+ FDEV(i).start_blk, FDEV(i).end_blk);
+ seq_putc(seq, '\n');
+ }
+ return 0;
+}
+
+
int __init f2fs_init_sysfs(void)
{
int ret;
@@ -1573,6 +1594,8 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
victim_bits_seq_show, sb);
proc_create_single_data("discard_plist_info", 0444, sbi->s_proc,
discard_plist_seq_show, sb);
+ proc_create_single_data("disk_map", 0444, sbi->s_proc,
+ disk_map_seq_show, sb);
return 0;
put_feature_list_kobj:
kobject_put(&sbi->s_feature_list_kobj);
--
2.44.0.278.ge034bb2e1d-goog

2024-03-05 23:28:39

by Jaegeuk Kim

Subject: Re: [PATCH v2] f2fs: add a proc entry show disk map

This patch adds the disk map of block address ranges configured by multiple
partitions.

Signed-off-by: Jaegeuk Kim <[email protected]>
---

from v1:
- add more layout information

fs/f2fs/sysfs.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)

diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c
index 10f308b3128f..a568ce96cf56 100644
--- a/fs/f2fs/sysfs.c
+++ b/fs/f2fs/sysfs.c
@@ -1492,6 +1492,50 @@ static int __maybe_unused discard_plist_seq_show(struct seq_file *seq,
return 0;
}

+static int __maybe_unused disk_map_seq_show(struct seq_file *seq,
+ void *offset)
+{
+ struct super_block *sb = seq->private;
+ struct f2fs_sb_info *sbi = F2FS_SB(sb);
+ int i;
+
+ seq_printf(seq, "Address Layout : %5luB Block address (# of Segments)\n",
+ F2FS_BLKSIZE);
+ seq_printf(seq, " SB : %12s\n", "0/1024B");
+ seq_printf(seq, " seg0_blkaddr : 0x%010x\n", SEG0_BLKADDR(sbi));
+ seq_printf(seq, " Checkpoint : 0x%010x (%10d)\n",
+ le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr), 2);
+ seq_printf(seq, " SIT : 0x%010x (%10d)\n",
+ SIT_I(sbi)->sit_base_addr,
+ le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_sit));
+ seq_printf(seq, " NAT : 0x%010x (%10d)\n",
+ NM_I(sbi)->nat_blkaddr,
+ le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_nat));
+ seq_printf(seq, " SSA : 0x%010x (%10d)\n",
+ SM_I(sbi)->ssa_blkaddr,
+ le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_ssa));
+ seq_printf(seq, " Main : 0x%010x (%10d)\n",
+ SM_I(sbi)->main_blkaddr,
+ le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main));
+ seq_printf(seq, " # of Sections : %12d\n",
+ le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count));
+ seq_printf(seq, " Segs/Sections : %12d\n",
+ SEGS_PER_SEC(sbi));
+ seq_printf(seq, " Section size : %12d MB\n",
+ SEGS_PER_SEC(sbi) << 1);
+
+ if (!f2fs_is_multi_device(sbi))
+ return 0;
+
+ seq_puts(seq, "\nDisk Map for multi devices:\n");
+ for (i = 0; i < sbi->s_ndevs; i++)
+ seq_printf(seq, "Disk:%2d (zoned=%d): 0x%010x - 0x%010x on %s\n",
+ i, bdev_is_zoned(FDEV(i).bdev),
+ FDEV(i).start_blk, FDEV(i).end_blk,
+ FDEV(i).path);
+ return 0;
+}
+
int __init f2fs_init_sysfs(void)
{
int ret;
@@ -1573,6 +1617,8 @@ int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
victim_bits_seq_show, sb);
proc_create_single_data("discard_plist_info", 0444, sbi->s_proc,
discard_plist_seq_show, sb);
+ proc_create_single_data("disk_map", 0444, sbi->s_proc,
+ disk_map_seq_show, sb);
return 0;
put_feature_list_kobj:
kobject_put(&sbi->s_feature_list_kobj);
--
2.44.0.278.ge034bb2e1d-goog

2024-03-06 02:31:53

by Chao Yu

Subject: Re: [f2fs-dev] [PATCH v2] f2fs: add a proc entry show disk map

On 2024/3/6 7:28, Jaegeuk Kim wrote:
> This patch adds the disk map of block address ranges configured by multiple
> partitions.
>
> Signed-off-by: Jaegeuk Kim <[email protected]>

Reviewed-by: Chao Yu <[email protected]>

Thanks,