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Add superblock fields which track first and most recent fs errors 

Add superblock fields which track where and when the first and most
recent file system errors occured.  These fields are displayed by
dumpe2fs and cleared by e2fsck.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
bitmap-optimize
Theodore Ts'o 2010-06-25 10:53:13 -04:00
parent 8c084167ee
commit 993988f655
3 changed files with 55 additions and 1 deletions
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2
e2fsck/unix.c
View File

@ -1441,6 +1441,8 @@ no_journal:
sb->s_mnt_count = 0;
if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
sb->s_lastcheck = ctx->now;
memset(((char *) sb) + EXT4_S_ERR_START, 0,
EXT4_S_ERR_LEN);
ext2fs_mark_super_dirty(fs);
}
}

31
lib/e2p/ls.c
View File

@ -341,6 +341,37 @@ void list_super2(struct ext2_super_block * sb, FILE *f)
if (sb->s_snapshot_list)
fprintf(f, "Snapshot list head: %u\n",
sb->s_snapshot_list);
if (sb->s_error_count)
fprintf(f, "FS Error count: %u\n",
sb->s_error_count);
if (sb->s_first_error_time) {
tm = sb->s_first_error_time;
fprintf(f, "First error time: %s", ctime(&tm));
memset(buf, 0, sizeof(buf));
strncpy(buf, sb->s_first_error_func,
sizeof(sb->s_first_error_func));
fprintf(f, "First error function: %s\n", buf);
fprintf(f, "First error line #: %u\n",
sb->s_first_error_line);
fprintf(f, "First error inode #: %u\n",
sb->s_first_error_ino);
fprintf(f, "First error block #: %llu\n",
sb->s_first_error_block);
}
if (sb->s_last_error_time) {
tm = sb->s_last_error_time;
fprintf(f, "Last error time: %s", ctime(&tm));
memset(buf, 0, sizeof(buf));
strncpy(buf, sb->s_last_error_func,
sizeof(sb->s_last_error_func));
fprintf(f, "Last error function: %s\n", buf);
fprintf(f, "Last error line #: %u\n",
sb->s_last_error_line);
fprintf(f, "Last error inode #: %u\n",
sb->s_last_error_ino);
fprintf(f, "Last error block #: %llu\n",
sb->s_last_error_block);
}
}
void list_super (struct ext2_super_block * s)

23
lib/ext2fs/ext2_fs.h
View File

@ -501,6 +501,12 @@ struct ext2_inode_large {
#define EXT2_ERRORS_PANIC 3 /* Panic */
#define EXT2_ERRORS_DEFAULT EXT2_ERRORS_CONTINUE
#if (__GNUC__ >= 4)
#define ext4_offsetof(TYPE,MEMBER) __builtin_offsetof(TYPE,MEMBER)
#else
#define ext4_offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
#endif
/*
* Structure of the super block
*/
@ -594,9 +600,24 @@ struct ext2_super_block {
__u64 s_snapshot_r_blocks_count; /* reserved blocks for active
snapshot's future use */
__u32 s_snapshot_list; /* inode number of the head of the on-disk snapshot list */
__u32 s_reserved[155]; /* Padding to the end of the block */
#define EXT4_S_ERR_START ext4_offsetof(struct ext2_super_block, s_error_count)
__u32 s_error_count; /* number of fs errors */
__u32 s_first_error_time; /* first time an error happened */
__u32 s_first_error_ino; /* inode involved in first error */
__u64 s_first_error_block; /* block involved of first error */
__u8 s_first_error_func[32]; /* function where the error happened */
__u32 s_first_error_line; /* line number where error happened */
__u32 s_last_error_time; /* most recent time of an error */
__u32 s_last_error_ino; /* inode involved in last error */
__u32 s_last_error_line; /* line number where error happened */
__u64 s_last_error_block; /* block involved of last error */
__u8 s_last_error_func[32]; /* function where the error happened */
#define EXT4_S_ERR_END ext4_offsetof(struct ext2_super_block, s_error_count)
__u32 s_reserved[128]; /* Padding to the end of the block */
};
#define EXT4_S_ERR_LEN (EXT4_S_ERR_END - EXT4_S_ERR_START)
/*
* Codes for operating systems
*/