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| -rw-r--r-- | Documentation/md.txt | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/Documentation/md.txt b/Documentation/md.txt index f0eee83ff78..923a6bddce7 100644 --- a/Documentation/md.txt +++ b/Documentation/md.txt @@ -419,7 +419,6 @@ Each directory contains: written, it will be rejected. recovery_start - When the device is not 'in_sync', this records the number of sectors from the start of the device which are known to be correct. This is normally zero, but during a recovery @@ -435,6 +434,20 @@ Each directory contains: Setting this to 'none' is equivalent to setting 'in_sync'. Setting to any other value also clears the 'in_sync' flag. + bad_blocks + This gives the list of all known bad blocks in the form of + start address and length (in sectors respectively). If output + is too big to fit in a page, it will be truncated. Writing + "sector length" to this file adds new acknowledged (i.e. + recorded to disk safely) bad blocks. + + unacknowledged_bad_blocks + This gives the list of known-but-not-yet-saved-to-disk bad + blocks in the same form of 'bad_blocks'. If output is too big + to fit in a page, it will be truncated. Writing to this file + adds bad blocks without acknowledging them. This is largely + for testing. + An active md device will also contain and entry for each active device |