Adapted -chek_media to peculiarities of DVD and BD

libisoburn/trunk/xorriso/xorriso.info

@@ -3557,11 +3557,16 @@ transmission errors.
           omits all blocks with addresses lower than limit.
     max_lba=limit
           switches to what=disc and omits all blocks above limit.
+    chunk_size=size
+          sets the number of bytes to be read in one low-level read
+          operation.  This gets rounded down to full blocks of 2048
+          bytes. 0 means automatic size.
     retry="on"
-          forces read retries with single blocks when the normal read
-          chunk produces a read error. By default, retries are only
-          enabled with CD media. "retry=off" forbits retries for all
-          media types.
+          forces read retries with minimal senseful chunk size when the
+          normal read chunk produces a read error. This size is 1s with
+          CD and stdio files, 16s with DVD (1 ECC Block), and 32s with
+          BD (1 Cluster).  By default, retries are only enabled with CD
+          media. "retry=off" forbits retries for all media types.
     abort_file=disk_path
           gives the path of the file which may abort a scan run. Abort
           happens if the file exists and its mtime is not older than
@@ -3622,14 +3627,17 @@ transmission errors.
           Choose one of "good", "md5_match", "slow", "partial",
           "valid", "untested", "invalid", "tao_end", "off_track",
           "md5_mismatch", "unreadable".
+          "valid" and "invalid" are qualities imported from a
+          sector_map file.  "tao_end" and "off_track" are intentionally
+          not readable, but not bad either.  "partial" are blocks
+          retrieved from a partially readable chunk. They are supposed
+          to be ok but stem from a suspicious neighborhood.
+          "md5_match" and "md5_mismatch" regions overlap with regions
+          of other quality.
     slow_limit=threshold
           sets the time threshold for a single read chunk to be
           considered slow. This may be a fractional number like 0.1 or
           1.5.
-    chunk_size=size
-          sets the number of bytes to be read in one read operation.
-          This gets rounded down to full blocks of 2048 bytes. 0 means
-          automatic size.
     async_chunks=number
           enables asynchronous MD5 processing if number is 2 or larger.
           In this case the given number of read chunks is allocated as
@@ -4970,8 +4978,8 @@ File: xorriso.info,  Node: CommandIdx,  Next: ConceptIdx,  Prev: Legal,  Up: Top
 * -cdx   sets working directory on disk: Navigate.            (line  16)
 * -changes_pending   overrides change status: Writing.        (line  13)
 * -charset   sets input/output character set: Charset.        (line  54)
-* -check_md5   verifies file checksum:   Verify.              (line 158)
-* -check_md5_r   verifies file tree checksums: Verify.        (line 174)
+* -check_md5   verifies file checksum:   Verify.              (line 166)
+* -check_md5_r   verifies file tree checksums: Verify.        (line 182)
 * -check_media   reads media block by block: Verify.          (line  21)
 * -check_media_defaults   sets -check_media options: Verify.  (line  41)
 * -chgrp   sets group in ISO image:      Manip.               (line  57)
@@ -5443,8 +5451,8 @@ File: xorriso.info,  Node: ConceptIdx,  Prev: CommandIdx,  Up: Top
 * Verify, compare ISO and disk file, -compare: Navigate.      (line 146)
 * Verify, compare ISO and disk tree, -compare_r: Navigate.    (line 159)
 * Verify, compare ISO and disk, -compare_l: Navigate.         (line 164)
-* Verify, file checksum, -check_md5:     Verify.              (line 158)
-* Verify, file tree checksums, -check_md5_r: Verify.          (line 174)
+* Verify, file checksum, -check_md5:     Verify.              (line 166)
+* Verify, file tree checksums, -check_md5_r: Verify.          (line 182)
 * Verify, preset -check_media, -check_media_defaults: Verify. (line  41)
 * Write, block size, -dvd_obs:           SetWrite.            (line 333)
 * Write, bootability, -boot_image:       Bootable.            (line  27)
@@ -5504,32 +5512,32 @@ Node: DialogCtl160283
 Node: Inquiry162881
 Node: Navigate170016
 Node: Verify178314
-Node: Restore187578
-Node: Emulation194665
-Node: Scripting205053
-Node: Frontend212824
-Node: Examples222431
-Node: ExDevices223609
-Node: ExCreate224275
-Node: ExDialog225560
-Node: ExGrowing226825
-Node: ExModifying227630
-Node: ExBootable228134
-Node: ExCharset228686
-Node: ExPseudo229578
-Node: ExCdrecord230476
-Node: ExMkisofs230793
-Node: ExGrowisofs232133
-Node: ExException233268
-Node: ExTime233722
-Node: ExIncBackup234181
-Node: ExRestore238161
-Node: ExRecovery239094
-Node: Files239664
-Node: Seealso240963
-Node: Bugreport241686
-Node: Legal242267
-Node: CommandIdx243278
-Node: ConceptIdx260013
+Node: Restore188141
+Node: Emulation195228
+Node: Scripting205616
+Node: Frontend213387
+Node: Examples222994
+Node: ExDevices224172
+Node: ExCreate224838
+Node: ExDialog226123
+Node: ExGrowing227388
+Node: ExModifying228193
+Node: ExBootable228697
+Node: ExCharset229249
+Node: ExPseudo230141
+Node: ExCdrecord231039
+Node: ExMkisofs231356
+Node: ExGrowisofs232696
+Node: ExException233831
+Node: ExTime234285
+Node: ExIncBackup234744
+Node: ExRestore238724
+Node: ExRecovery239657
+Node: Files240227
+Node: Seealso241526
+Node: Bugreport242249
+Node: Legal242830
+Node: CommandIdx243841
+Node: ConceptIdx260576
 
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