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Date: Mon, 4 Jan 2016 10:04:44 +0100
From: Jan Kara <jack@...e.cz>
To: Robert Elliott <elliott@....com>
Cc: jack@...e.com, tytso@....edu, adilger.kernel@...ger.ca,
dan.j.williams@...el.com, choleraehyq@...il.com,
david@...morbit.com, linux-nvdimm@...ts.01.org,
linux-ext4@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ext2, ext4: include filesystem block size in error
messages
On Wed 23-12-15 18:10:01, Robert Elliott wrote:
> Print the problematic value in messages about the filesystem
> block size.
>
> Normalize all of the blocksize messages that use "blocksize" to
> use "filesystem block size". This helps distinguish this block size
> from the underlying block device's logical block size (i.e.,
> sector size) and physical block size.
>
> Example old messages:
> EXT2-fs (pmem0): unable to set blocksize
> EXT4-fs (pmem0): error: unsupported blocksize for dax
> EXT4-fs (pmem0): unsupported blocksize for fs encryption
> EXT2-fs (pmem0): bad blocksize %d
>
> Example new message:
> EXT4-fs (pmem0): error: unsupported filesystem block size 2048 for dax
Looks good to me. You can add:
Reviewed-by: Jan Kara <jack@...e.cz>
Honza
>
> Signed-off-by: Robert Elliott <elliott@....com>
> ---
> fs/ext2/super.c | 17 +++++++++++------
> fs/ext4/super.c | 33 ++++++++++++++++++++-------------
> 2 files changed, 31 insertions(+), 19 deletions(-)
>
> diff --git a/fs/ext2/super.c b/fs/ext2/super.c
> index 748d35a..1186a5b 100644
> --- a/fs/ext2/super.c
> +++ b/fs/ext2/super.c
> @@ -31,6 +31,7 @@
> #include <linux/mount.h>
> #include <linux/log2.h>
> #include <linux/quotaops.h>
> +#include <linux/stringify.h>
> #include <asm/uaccess.h>
> #include "ext2.h"
> #include "xattr.h"
> @@ -822,7 +823,9 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> */
> blocksize = sb_min_blocksize(sb, BLOCK_SIZE);
> if (!blocksize) {
> - ext2_msg(sb, KERN_ERR, "error: unable to set blocksize");
> + ext2_msg(sb, KERN_ERR,
> + "error: unable to set filesystem block size "
> + __stringify(BLOCK_SIZE));
> goto failed_sbi;
> }
>
> @@ -921,7 +924,8 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> if (sbi->s_mount_opt & EXT2_MOUNT_DAX) {
> if (blocksize != PAGE_SIZE) {
> ext2_msg(sb, KERN_ERR,
> - "error: unsupported blocksize for dax");
> + "error: unsupported filesystem block size %d for dax",
> + blocksize);
> goto failed_mount;
> }
> if (!sb->s_bdev->bd_disk->fops->direct_access) {
> @@ -937,7 +941,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
>
> if (!sb_set_blocksize(sb, blocksize)) {
> ext2_msg(sb, KERN_ERR,
> - "error: bad blocksize %d", blocksize);
> + "error: bad filesystem block size %d", blocksize);
> goto failed_sbi;
> }
>
> @@ -1007,14 +1011,15 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
>
> if (sb->s_blocksize != bh->b_size) {
> if (!silent)
> - ext2_msg(sb, KERN_ERR, "error: unsupported blocksize");
> + ext2_msg(sb, KERN_ERR,
> + "error: unsupported filesystem block size %lu",
> + sb->s_blocksize);
> goto failed_mount;
> }
>
> if (sb->s_blocksize != sbi->s_frag_size) {
> ext2_msg(sb, KERN_ERR,
> - "error: fragsize %lu != blocksize %lu"
> - "(not supported yet)",
> + "error: fragsize %lu != filesystem block size %lu (not supported yet)",
> sbi->s_frag_size, sb->s_blocksize);
> goto failed_mount;
> }
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index c9ab67d..9e1c049 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -42,6 +42,7 @@
>
> #include <linux/kthread.h>
> #include <linux/freezer.h>
> +#include <linux/stringify.h>
>
> #include "ext4.h"
> #include "ext4_extents.h" /* Needed for trace points definition */
> @@ -1750,8 +1751,9 @@ static int parse_options(char *options, struct super_block *sb,
> BLOCK_SIZE << le32_to_cpu(sbi->s_es->s_log_block_size);
>
> if (blocksize < PAGE_CACHE_SIZE) {
> - ext4_msg(sb, KERN_ERR, "can't mount with "
> - "dioread_nolock if block size != PAGE_SIZE");
> + ext4_msg(sb, KERN_ERR,
> + "can't mount with dioread_nolock if filesystem block size %d != PAGE_SIZE",
> + blocksize);
> return 0;
> }
> }
> @@ -3147,7 +3149,9 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
> ret = -EINVAL;
> blocksize = sb_min_blocksize(sb, EXT4_MIN_BLOCK_SIZE);
> if (!blocksize) {
> - ext4_msg(sb, KERN_ERR, "unable to set blocksize");
> + ext4_msg(sb, KERN_ERR,
> + "unable to set filesystem block size "
> + __stringify(EXT4_MIN_BLOCK_SIZE));
> goto out_fail;
> }
>
> @@ -3367,14 +3371,15 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
> if (blocksize < EXT4_MIN_BLOCK_SIZE ||
> blocksize > EXT4_MAX_BLOCK_SIZE) {
> ext4_msg(sb, KERN_ERR,
> - "Unsupported filesystem blocksize %d", blocksize);
> + "Unsupported filesystem block size %d", blocksize);
> goto failed_mount;
> }
>
> if (sbi->s_mount_opt & EXT4_MOUNT_DAX) {
> if (blocksize != PAGE_SIZE) {
> ext4_msg(sb, KERN_ERR,
> - "error: unsupported blocksize for dax");
> + "error: unsupported filesystem block size %d for dax",
> + blocksize);
> goto failed_mount;
> }
> if (!sb->s_bdev->bd_disk->fops->direct_access) {
> @@ -3393,7 +3398,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
> if (sb->s_blocksize != blocksize) {
> /* Validate the filesystem blocksize */
> if (!sb_set_blocksize(sb, blocksize)) {
> - ext4_msg(sb, KERN_ERR, "bad block size %d",
> + ext4_msg(sb, KERN_ERR, "bad filesystem block size %d",
> blocksize);
> goto failed_mount;
> }
> @@ -3495,8 +3500,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
> if (has_bigalloc) {
> if (clustersize < blocksize) {
> ext4_msg(sb, KERN_ERR,
> - "cluster size (%d) smaller than "
> - "block size (%d)", clustersize, blocksize);
> + "cluster size (%d) smaller than filesystem block size (%d)",
> + clustersize, blocksize);
> goto failed_mount;
> }
> sbi->s_cluster_bits = le32_to_cpu(es->s_log_cluster_size) -
> @@ -3519,9 +3524,9 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
> }
> } else {
> if (clustersize != blocksize) {
> - ext4_warning(sb, "fragment/cluster size (%d) != "
> - "block size (%d)", clustersize,
> - blocksize);
> + ext4_warning(sb,
> + "fragment/cluster size (%d) != filesystem block size (%d)",
> + clustersize, blocksize);
> clustersize = blocksize;
> }
> if (sbi->s_blocks_per_group > blocksize * 8) {
> @@ -3769,7 +3774,8 @@ no_journal:
> if ((DUMMY_ENCRYPTION_ENABLED(sbi) || ext4_has_feature_encrypt(sb)) &&
> (blocksize != PAGE_CACHE_SIZE)) {
> ext4_msg(sb, KERN_ERR,
> - "Unsupported blocksize for fs encryption");
> + "Unsupported filesystem block size %d for fs encryption",
> + blocksize);
> goto failed_mount_wq;
> }
>
> @@ -4112,7 +4118,8 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb,
> hblock = bdev_logical_block_size(bdev);
> if (blocksize < hblock) {
> ext4_msg(sb, KERN_ERR,
> - "blocksize too small for journal device");
> + "filesystem block size %d too small for journal device",
> + blocksize);
> goto out_bdev;
> }
>
> --
> 2.4.3
>
>
--
Jan Kara <jack@...e.com>
SUSE Labs, CR
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