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Date: Fri, 06 Nov 2009 15:53:27 +0100
From: Alexey Fisher <bug-track@...her-privat.net>
To: Eric Sandeen <sandeen@...hat.com>
Cc: Andreas Dilger <adilger@....com>, linux-ext4@...r.kernel.org,
Theodore Tso <tytso@....edu>
Subject: Re: [PATCH] Unify log messages in ext2
Any comments for this patch?
Alexey
Am Donnerstag, den 05.11.2009, 08:33 +0100 schrieb Alexey Fisher:
> make messages produced by ext2 more unified. It should be
> easy to parse.
>
> dmesg before patch:
> [ 4893.684892] reservations ON
> [ 4893.684896] xip option not supported
> [ 4893.684961] EXT2-fs warning: mounting ext3 filesystem as ext2
> [ 4893.684964] EXT2-fs warning: maximal mount count reached, running
> e2fsck is recommended
> [ 4893.684990] EXT II FS: 0.5b, 95/08/09, bs=1024, fs=1024, gc=2,
> bpg=8192, ipg=1280, mo=80010]
>
> dmesg after patch:
> [ 4893.684892] EXT2-fs (loop0): reservations ON
> [ 4893.684896] EXT2-fs (loop0): xip option not supported
> [ 4893.684961] EXT2-fs (loop0): warning: mounting ext3 filesystem as
> ext2
> [ 4893.684964] EXT2-fs (loop0): warning: maximal mount count reached,
> running e2fsck is recommended
> [ 4893.684990] EXT2-fs (loop0): 0.5b, 95/08/09, bs=1024, fs=1024, gc=2,
> bpg=8192, ipg=1280, mo=80010]
>
> Signed-off-by: Alexey Fisher <bug-track@...her-privat.net>
> Reviewed-by: Andreas Dilger <adilger@....com>
> ---
> fs/ext2/ext2.h | 2 +
> fs/ext2/super.c | 151 +++++++++++++++++++++++++++++++------------------------
> 2 files changed, 88 insertions(+), 65 deletions(-)
>
> diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
> index 9a8a8e2..29f65c5 100644
> --- a/fs/ext2/ext2.h
> +++ b/fs/ext2/ext2.h
> @@ -142,6 +142,8 @@ struct dentry *ext2_get_parent(struct dentry *child);
> /* super.c */
> extern void ext2_error (struct super_block *, const char *, const char *, ...)
> __attribute__ ((format (printf, 3, 4)));
> +extern void ext2_msg(struct super_block *, const char *, const char *, ...)
> + __attribute__ ((format (printf, 3, 4)));
> extern void ext2_warning (struct super_block *, const char *, const char *, ...)
> __attribute__ ((format (printf, 3, 4)));
> extern void ext2_update_dynamic_rev (struct super_block *sb);
> diff --git a/fs/ext2/super.c b/fs/ext2/super.c
> index 1a9ffee..105fcd1 100644
> --- a/fs/ext2/super.c
> +++ b/fs/ext2/super.c
> @@ -58,26 +58,38 @@ void ext2_error (struct super_block * sb, const char * function,
> }
>
> va_start(args, fmt);
> - printk(KERN_CRIT "EXT2-fs error (device %s): %s: ",sb->s_id, function);
> + ext2_msg(sb, KERN_CRIT, "error %s", function);
> vprintk(fmt, args);
> printk("\n");
> va_end(args);
>
> if (test_opt(sb, ERRORS_PANIC))
> - panic("EXT2-fs panic from previous error\n");
> + panic("EXT2-fs: panic from previous error\n");
> if (test_opt(sb, ERRORS_RO)) {
> - printk("Remounting filesystem read-only\n");
> + ext2_msg(sb, KERN_CRIT, "Remounting filesystem read-only");
> sb->s_flags |= MS_RDONLY;
> }
> }
>
> +void ext2_msg(struct super_block *sb, const char *prefix,
> + const char *fmt, ...)
> +{
> + va_list args;
> +
> + va_start(args, fmt);
> + printk("%sEXT2-fs (%s): ", prefix, sb->s_id);
> + vprintk(fmt, args);
> + printk("\n");
> + va_end(args);
> +}
> +
> void ext2_warning (struct super_block * sb, const char * function,
> const char * fmt, ...)
> {
> va_list args;
>
> va_start(args, fmt);
> - printk(KERN_WARNING "EXT2-fs warning (device %s): %s: ",
> + printk(KERN_WARNING "EXT2-fs (%s) warning: %s: ",
> sb->s_id, function);
> vprintk(fmt, args);
> printk("\n");
> @@ -420,7 +432,7 @@ static const match_table_t tokens = {
> };
>
> static int parse_options (char * options,
> - struct ext2_sb_info *sbi)
> + struct ext2_sb_info *sbi, struct super_block *sb)
> {
> char * p;
> substring_t args[MAX_OPT_ARGS];
> @@ -505,7 +517,8 @@ static int parse_options (char * options,
> #else
> case Opt_user_xattr:
> case Opt_nouser_xattr:
> - printk("EXT2 (no)user_xattr options not supported\n");
> + ext2_msg(sb, KERN_INFO, "(no)user_xattr options"
> + "not supported");
> break;
> #endif
> #ifdef CONFIG_EXT2_FS_POSIX_ACL
> @@ -518,14 +531,15 @@ static int parse_options (char * options,
> #else
> case Opt_acl:
> case Opt_noacl:
> - printk("EXT2 (no)acl options not supported\n");
> + ext2_msg(sb, KERN_INFO,
> + "(no)acl options not supported");
> break;
> #endif
> case Opt_xip:
> #ifdef CONFIG_EXT2_FS_XIP
> set_opt (sbi->s_mount_opt, XIP);
> #else
> - printk("EXT2 xip option not supported\n");
> + ext2_msg(sb, KERN_INFO, "xip option not supported");
> #endif
> break;
>
> @@ -542,19 +556,18 @@ static int parse_options (char * options,
> case Opt_quota:
> case Opt_usrquota:
> case Opt_grpquota:
> - printk(KERN_ERR
> - "EXT2-fs: quota operations not supported.\n");
> -
> + ext2_msg(sb, KERN_INFO,
> + "quota operations not supported");
> break;
> #endif
>
> case Opt_reservation:
> set_opt(sbi->s_mount_opt, RESERVATION);
> - printk("reservations ON\n");
> + ext2_msg(sb, KERN_INFO, "reservations ON");
> break;
> case Opt_noreservation:
> clear_opt(sbi->s_mount_opt, RESERVATION);
> - printk("reservations OFF\n");
> + ext2_msg(sb, KERN_INFO, "reservations OFF");
> break;
> case Opt_ignore:
> break;
> @@ -573,34 +586,39 @@ static int ext2_setup_super (struct super_block * sb,
> struct ext2_sb_info *sbi = EXT2_SB(sb);
>
> if (le32_to_cpu(es->s_rev_level) > EXT2_MAX_SUPP_REV) {
> - printk ("EXT2-fs warning: revision level too high, "
> - "forcing read-only mode\n");
> + ext2_msg(sb, KERN_ERR,
> + "revision level too high, forcing read-only mode");
> res = MS_RDONLY;
> }
> if (read_only)
> return res;
> if (!(sbi->s_mount_state & EXT2_VALID_FS))
> - printk ("EXT2-fs warning: mounting unchecked fs, "
> - "running e2fsck is recommended\n");
> + ext2_msg(sb, KERN_WARNING,
> + "warning: mounting unchecked fs, "
> + "running e2fsck is recommended");
> else if ((sbi->s_mount_state & EXT2_ERROR_FS))
> - printk ("EXT2-fs warning: mounting fs with errors, "
> - "running e2fsck is recommended\n");
> + ext2_msg(sb, KERN_WARNING,
> + "warning: mounting fs with errors, "
> + "running e2fsck is recommended");
> else if ((__s16) le16_to_cpu(es->s_max_mnt_count) >= 0 &&
> le16_to_cpu(es->s_mnt_count) >=
> (unsigned short) (__s16) le16_to_cpu(es->s_max_mnt_count))
> - printk ("EXT2-fs warning: maximal mount count reached, "
> - "running e2fsck is recommended\n");
> + ext2_msg(sb, KERN_WARNING,
> + "warning: maximal mount count reached, "
> + "running e2fsck is recommended");
> else if (le32_to_cpu(es->s_checkinterval) &&
> - (le32_to_cpu(es->s_lastcheck) + le32_to_cpu(es->s_checkinterval) <= get_seconds()))
> - printk ("EXT2-fs warning: checktime reached, "
> - "running e2fsck is recommended\n");
> + (le32_to_cpu(es->s_lastcheck) +
> + le32_to_cpu(es->s_checkinterval) <= get_seconds()))
> + ext2_msg(sb, KERN_WARNING,
> + "warning: checktime reached, "
> + "running e2fsck is recommended");
> if (!le16_to_cpu(es->s_max_mnt_count))
> es->s_max_mnt_count = cpu_to_le16(EXT2_DFL_MAX_MNT_COUNT);
> le16_add_cpu(&es->s_mnt_count, 1);
> ext2_write_super(sb);
> if (test_opt (sb, DEBUG))
> - printk ("[EXT II FS %s, %s, bs=%lu, fs=%lu, gc=%lu, "
> - "bpg=%lu, ipg=%lu, mo=%04lx]\n",
> + ext2_msg(sb, KERN_INFO, "%s, %s, bs=%lu, fs=%lu, gc=%lu, "
> + "bpg=%lu, ipg=%lu, mo=%04lx]",
> EXT2FS_VERSION, EXT2FS_DATE, sb->s_blocksize,
> sbi->s_frag_size,
> sbi->s_groups_count,
> @@ -767,7 +785,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> */
> blocksize = sb_min_blocksize(sb, BLOCK_SIZE);
> if (!blocksize) {
> - printk ("EXT2-fs: unable to set blocksize\n");
> + ext2_msg(sb, KERN_ERR, "unable to set blocksize");
> goto failed_sbi;
> }
>
> @@ -783,7 +801,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> }
>
> if (!(bh = sb_bread(sb, logic_sb_block))) {
> - printk ("EXT2-fs: unable to read superblock\n");
> + ext2_msg(sb, KERN_ERR, "unable to read superblock");
> goto failed_sbi;
> }
> /*
> @@ -826,7 +844,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
>
> set_opt(sbi->s_mount_opt, RESERVATION);
>
> - if (!parse_options ((char *) data, sbi))
> + if (!parse_options((char *) data, sbi, sb))
> goto failed_mount;
>
> sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
> @@ -840,8 +858,9 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> (EXT2_HAS_COMPAT_FEATURE(sb, ~0U) ||
> EXT2_HAS_RO_COMPAT_FEATURE(sb, ~0U) ||
> EXT2_HAS_INCOMPAT_FEATURE(sb, ~0U)))
> - printk("EXT2-fs warning: feature flags set on rev 0 fs, "
> - "running e2fsck is recommended\n");
> + ext2_msg(sb, KERN_WARNING,
> + "warning: feature flags set on rev 0 fs, "
> + "running e2fsck is recommended");
> /*
> * Check feature flags regardless of the revision level, since we
> * previously didn't change the revision level when setting the flags,
> @@ -849,16 +868,16 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> */
> features = EXT2_HAS_INCOMPAT_FEATURE(sb, ~EXT2_FEATURE_INCOMPAT_SUPP);
> if (features) {
> - printk("EXT2-fs: %s: couldn't mount because of "
> - "unsupported optional features (%x).\n",
> - sb->s_id, le32_to_cpu(features));
> + ext2_msg(sb, KERN_ERR, "couldn't mount because of "
> + "unsupported optional features (%x)",
> + le32_to_cpu(features));
> goto failed_mount;
> }
> if (!(sb->s_flags & MS_RDONLY) &&
> (features = EXT2_HAS_RO_COMPAT_FEATURE(sb, ~EXT2_FEATURE_RO_COMPAT_SUPP))){
> - printk("EXT2-fs: %s: couldn't mount RDWR because of "
> - "unsupported optional features (%x).\n",
> - sb->s_id, le32_to_cpu(features));
> + ext2_msg(sb, KERN_ERR, "couldn't mount RDWR because of "
> + "unsupported optional features (%x)",
> + le32_to_cpu(features));
> goto failed_mount;
> }
>
> @@ -866,7 +885,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
>
> if (ext2_use_xip(sb) && blocksize != PAGE_SIZE) {
> if (!silent)
> - printk("XIP: Unsupported blocksize\n");
> + ext2_msg(sb, KERN_ERR, "XIP: Unsupported blocksize");
> goto failed_mount;
> }
>
> @@ -875,7 +894,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> brelse(bh);
>
> if (!sb_set_blocksize(sb, blocksize)) {
> - printk(KERN_ERR "EXT2-fs: blocksize too small for device.\n");
> + ext2_msg(sb, KERN_ERR, "blocksize too small");
> goto failed_sbi;
> }
>
> @@ -883,14 +902,14 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> offset = (sb_block*BLOCK_SIZE) % blocksize;
> bh = sb_bread(sb, logic_sb_block);
> if(!bh) {
> - printk("EXT2-fs: Couldn't read superblock on "
> - "2nd try.\n");
> + ext2_msg(sb, KERN_ERR, "Couldn't read superblock on "
> + "2nd try");
> goto failed_sbi;
> }
> es = (struct ext2_super_block *) (((char *)bh->b_data) + offset);
> sbi->s_es = es;
> if (es->s_magic != cpu_to_le16(EXT2_SUPER_MAGIC)) {
> - printk ("EXT2-fs: Magic mismatch, very weird !\n");
> + ext2_msg(sb, KERN_ERR, "Magic mismatch, very weird !");
> goto failed_mount;
> }
> }
> @@ -906,7 +925,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> if ((sbi->s_inode_size < EXT2_GOOD_OLD_INODE_SIZE) ||
> !is_power_of_2(sbi->s_inode_size) ||
> (sbi->s_inode_size > blocksize)) {
> - printk ("EXT2-fs: unsupported inode size: %d\n",
> + ext2_msg(sb, KERN_ERR, "unsupported inode size: %d",
> sbi->s_inode_size);
> goto failed_mount;
> }
> @@ -943,29 +962,29 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
>
> if (sb->s_blocksize != bh->b_size) {
> if (!silent)
> - printk ("VFS: Unsupported blocksize on dev "
> - "%s.\n", sb->s_id);
> + ext2_msg(sb, KERN_ERR, "VFS: Unsupported blocksize");
> goto failed_mount;
> }
>
> if (sb->s_blocksize != sbi->s_frag_size) {
> - printk ("EXT2-fs: fragsize %lu != blocksize %lu (not supported yet)\n",
> + ext2_msg(sb, KERN_ERR,
> + "fragsize %lu != blocksize %lu (not supported yet)",
> sbi->s_frag_size, sb->s_blocksize);
> goto failed_mount;
> }
>
> if (sbi->s_blocks_per_group > sb->s_blocksize * 8) {
> - printk ("EXT2-fs: #blocks per group too big: %lu\n",
> + ext2_msg(sb, KERN_ERR, "#blocks per group too big: %lu",
> sbi->s_blocks_per_group);
> goto failed_mount;
> }
> if (sbi->s_frags_per_group > sb->s_blocksize * 8) {
> - printk ("EXT2-fs: #fragments per group too big: %lu\n",
> + ext2_msg(sb, KERN_ERR, "#fragments per group too big: %lu",
> sbi->s_frags_per_group);
> goto failed_mount;
> }
> if (sbi->s_inodes_per_group > sb->s_blocksize * 8) {
> - printk ("EXT2-fs: #inodes per group too big: %lu\n",
> + ext2_msg(sb, KERN_ERR, "#inodes per group too big: %lu",
> sbi->s_inodes_per_group);
> goto failed_mount;
> }
> @@ -979,13 +998,13 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> EXT2_DESC_PER_BLOCK(sb);
> sbi->s_group_desc = kmalloc (db_count * sizeof (struct buffer_head *), GFP_KERNEL);
> if (sbi->s_group_desc == NULL) {
> - printk ("EXT2-fs: not enough memory\n");
> + ext2_msg(sb, KERN_ERR, "not enough memory");
> goto failed_mount;
> }
> bgl_lock_init(sbi->s_blockgroup_lock);
> sbi->s_debts = kcalloc(sbi->s_groups_count, sizeof(*sbi->s_debts), GFP_KERNEL);
> if (!sbi->s_debts) {
> - printk ("EXT2-fs: not enough memory\n");
> + ext2_msg(sb, KERN_ERR, "not enough memory");
> goto failed_mount_group_desc;
> }
> for (i = 0; i < db_count; i++) {
> @@ -994,12 +1013,13 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> if (!sbi->s_group_desc[i]) {
> for (j = 0; j < i; j++)
> brelse (sbi->s_group_desc[j]);
> - printk ("EXT2-fs: unable to read group descriptors\n");
> + ext2_msg(sb, KERN_ERR,
> + "unable to read group descriptors");
> goto failed_mount_group_desc;
> }
> }
> if (!ext2_check_descriptors (sb)) {
> - printk ("EXT2-fs: group descriptors corrupted!\n");
> + ext2_msg(sb, KERN_ERR, "group descriptors corrupted");
> goto failed_mount2;
> }
> sbi->s_gdb_count = db_count;
> @@ -1032,7 +1052,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> ext2_count_dirs(sb));
> }
> if (err) {
> - printk(KERN_ERR "EXT2-fs: insufficient memory\n");
> + ext2_msg(sb, KERN_ERR, "insufficient memory");
> goto failed_mount3;
> }
> /*
> @@ -1048,27 +1068,27 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
> }
> if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {
> iput(root);
> - printk(KERN_ERR "EXT2-fs: corrupt root inode, run e2fsck\n");
> + ext2_msg(sb, KERN_ERR, "corrupt root inode, run e2fsck");
> goto failed_mount3;
> }
>
> sb->s_root = d_alloc_root(root);
> if (!sb->s_root) {
> iput(root);
> - printk(KERN_ERR "EXT2-fs: get root inode failed\n");
> + ext2_msg(sb, KERN_ERR, "get root inode failed");
> ret = -ENOMEM;
> goto failed_mount3;
> }
> if (EXT2_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_HAS_JOURNAL))
> - ext2_warning(sb, __func__,
> - "mounting ext3 filesystem as ext2");
> + ext2_msg(sb, KERN_WARNING,
> + "warning: mounting ext3 filesystem as ext2");
> ext2_setup_super (sb, es, sb->s_flags & MS_RDONLY);
> return 0;
>
> cantfind_ext2:
> if (!silent)
> - printk("VFS: Can't find an ext2 filesystem on dev %s.\n",
> - sb->s_id);
> + ext2_msg(sb, KERN_ERR,
> + "VFS: Can't find an ext2 filesystem");
> goto failed_mount;
> failed_mount3:
> percpu_counter_destroy(&sbi->s_freeblocks_counter);
> @@ -1170,7 +1190,7 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
> /*
> * Allow the "check" option to be passed as a remount option.
> */
> - if (!parse_options (data, sbi)) {
> + if (!parse_options(data, sbi, sb)) {
> err = -EINVAL;
> goto restore_opts;
> }
> @@ -1182,7 +1202,7 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
> EXT2_MOUNT_XIP if not */
>
> if ((ext2_use_xip(sb)) && (sb->s_blocksize != PAGE_SIZE)) {
> - printk("XIP: Unsupported blocksize\n");
> + ext2_msg(sb, KERN_WARNING, "XIP: Unsupported blocksize");
> err = -EINVAL;
> goto restore_opts;
> }
> @@ -1216,9 +1236,10 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
> __le32 ret = EXT2_HAS_RO_COMPAT_FEATURE(sb,
> ~EXT2_FEATURE_RO_COMPAT_SUPP);
> if (ret) {
> - printk("EXT2-fs: %s: couldn't remount RDWR because of "
> - "unsupported optional features (%x).\n",
> - sb->s_id, le32_to_cpu(ret));
> + ext2_msg(sb, KERN_WARNING,
> + "couldn't remount RDWR because of "
> + "unsupported optional features (%x).",
> + le32_to_cpu(ret));
> err = -EROFS;
> goto restore_opts;
> }
--
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