[mythtv-commits] Ticket #8706: Position map is not updated during playback of in-progress recordings

[MythTV]

#8706: Position map is not updated during playback of in-progress recordings
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 Reporter:  James Linder <jam@…>          |           Owner:  markk     
     Type:  defect                        |          Status:  infoneeded
 Priority:  blocker                       |       Milestone:  0.24      
Component:  MythTV - General              |         Version:  Trunk Head
 Severity:  medium                        |      Resolution:            
 Keywords:                                |   Ticket locked:  0         
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Comment (by James Linder <jam@…>):

 iostat -xm 30
 before and just after abort
 {{{
 avg-cpu:  %user   %nice %system %iowait  %steal   %idle
            2.94    0.21    2.23    0.44    0.00   94.19

 Device:         rrqm/s   wrqm/s     r/s     w/s    rMB/s    wMB/s avgrq-sz
 avgqu-sz   await  svctm  %util
 sda               0.00     2.60    0.00    3.43     0.00     0.02    12.00
 0.02    5.31   5.08   1.74

 avg-cpu:  %user   %nice %system %iowait  %steal   %idle
            2.57    0.61    6.78    0.90    0.00   89.14

 Device:         rrqm/s   wrqm/s     r/s     w/s    rMB/s    wMB/s avgrq-sz
 avgqu-sz   await  svctm  %util
 sda               0.00   113.33    0.70    9.10     0.01     0.92   193.40
 0.09    9.27   7.77   7.61

 Free space

 sandypit:/var/lib/smartmontools # xfs_db -c freesp -r /dev/sda4
    from      to extents  blocks    pct
       1       1      30      30   0.00
       2       3      11      29   0.00
       4       7      36     213   0.00
       8      15      22     240   0.00
      16      31     167    2884   0.00
      32      63     225    9137   0.01
      64     127     432   41217   0.03
     128     255    1372  203741   0.15
    1024    2047       2    3518   0.00
    2048    4095       1    2528   0.00
    4096    8191       2    9698   0.01
    8192   16383       2   19620   0.01
   16384   32767       3   73623   0.05
   32768   65535       4  227565   0.17
   65536  131071       6  658840   0.49
  131072  262143       1  143983   0.11
  262144  524287       1  308676   0.23
  524288 1048575       4 2884227   2.13
 1048576 2097151       1 1542533   1.14
 2097152 4194303       2 6700528   4.95
 4194304 8388607       4 26705948  19.71
 16777216 33554431       4 95934481  70.81

 Finally Disk Useage
 sandypit:/var/lib/smartmontools # df /dev/sda4
 Filesystem           1K-blocks      Used Available Use% Mounted on
 /dev/sda4            650517492 109243456 541274036  17% /mnt/store
 }}}

 And finally just of interest:
 On same hardware this did not happen on 0.23. I've not re-installed 0.23
 to retry, but it started as I went to trunk. Somehow my gut feel is that
 it is not a hardware failure, it may be that trunk is exercising an area
 of the hardware that 0.23 did not, but I see nothing that looks
 suspicious.

 Database is NOT on same partition

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Ticket URL: <http://svn.mythtv.org/trac/ticket/8706#comment:17>
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