On Thursday 12 January 2006 09:01, David Bennett wrote: > Yeechang and everyone else who has been so helpful, > > > I must admit I am quite fascinated by the Raid and NAS discussions, > but given that I ran into the same problem of being unable to record > two programs at once on my software RAID, I am grateful for Yeechang > to try and help steer things back towards my original question. > > Quick summary: When on a software RAID two programs cannot be recorded > when they start at the same time. The second program (always starting > 0.3 seconds after the first) does not record and ends up as a 0 byte > file. This only happens when the video/recordings is on my software > raid. (this is key. i can switch over to another non raided hard drive > and have no problems doing the exact same thing!) > > I an running linux kernel 2.6, 512mb, celeron (fairly fast but a > celeron nonetheless). I am using 2 drives in Raid 1 (had same trouble > with Raid 5 though) and am using a Sata IDE extender to add sata ports > (but this is probably irrelevant as I had the problem before I > installed this.) Some people have suggested that the celeron might be > the problem, but is this possible? > > No errors on dmesg, and no errors on mythbackend.log until I try and > see the recorded programs on mythweb. Memory is full (as always... is > this normal?) but the Swap is empty (only 1%). Top doesnt show > Mythbackend anywhere near the top. > > Here is what my log shows: > > 2006-01-12 20:59:02.889 Started recording "けものみち" on channel: 4 on cardid: > 1, sourceid 1 > 2006-01-12 20:59:03.029 New DB connection, total: 4 > 2006-01-12 20:59:03.033 New DB connection, total: 5 > 2006-01-12 20:59:03.043 scheduler: Last message repeated 7 times > 2006-01-12 20:59:03.060 scheduler: Schedule Change > 2006-01-12 20:59:03.078 Started recording "白夜行" on channel: 6 on cardid: 2, > s ourceid 1 > QMetaObjectCleanUp::setMetaObject: Double use of QMetaObjectCleanUp! > 2006-01-12 20:59:03.875 Changing from None to RecordingOnly > 2006-01-12 20:59:03.877 Changing from None to RecordingOnly > 2006-01-12 22:09:00.037 Finished recording けものみち on channel: 4 > > the 2nd program's video file is 0 byte file size. (and the 2nd program > always does not seem to work.) > > Suggestions so far: > > celeron cant handle it (cache issues) --- a possibility? > memory -- not sure myself > drive spinning - maybe the drives are spinning down. this is also > possible but as they are sata i cant seem to change them with hdparm. > > So much frustration!! > arg,.... any ideas? raid caching or the likes? (<-- i made that up!) > > thank you kindly > david > > ps. yeechan -> i am quite excited to hear how your ReadyNAS handles!
As a test I just set two HD shows to record, both began at the same time and both are being written to my RAID5 array. this is with MythTV SVN though. -- Steve _______________________________________________ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users