MS400h deletes recording when power disconnected

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MS400h deletes recording when power disconnected Empty MS400h deletes recording when power disconnected

Mensaje  napoleon el Lun Jul 05, 2010 11:54 am

Hi,

yesterday i had a timer recording and MS400h had recorded about 50 min when power disconnected(no no, I did'nt disconnect, it was blackout). When turned on again, the recording was lost.
Ok, maybe some kind of anomaly, so I tried reproduce the problem and that's it - put the MS400 to record, looked with samba and with telnet and the recording was there, then disconnected power and when turned on again, the recording was lost.
I looked at /usr/local/etc/rcS and /etc/rcS but did'nt find any rm command, does anybody have an idea how to disble this behaviour? ...and sorry for my bad english:)

napoleon

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MS400h deletes recording when power disconnected Empty Re: MS400h deletes recording when power disconnected

Mensaje  vic1972 el Lun Jul 05, 2010 3:36 pm

Hello,
welcome to this forum.
I'm sorry you had that recording lost.

This is not like old VHS tape, that at least all the recording till blackout are safe;
in this case, all is digital and stored in a temp. file ending like _R0.ts
at the end of the recording the application changes the name of temp. recording into final filename.
So, now, I am afraid that the recording has been lost, or in this temp. filename ... you can check,
and see if find this file.

good luck.


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MS400h deletes recording when power disconnected Empty Re: MS400h deletes recording when power disconnected

Mensaje  napoleon el Lun Jul 05, 2010 4:32 pm

There was no temp files in the REC folder. I know differences between old VHS and digitally stored media but... for example if I use mbox format, postfix is currently receiving e-mail and blackout occurs, then the mbox file may be corrupt but I don't lose all emails. Saving recordings should be similar and I dont believe that MS400h has write buffer for 50min recording so i suspect that some script(or busybox's fsck?) deletes partial recordings;)
Thanks anyway, at home i'll do another test to be sure - disconnect power when recording, remove HDD from MS400h and look the contents of REC folder with computer.

napoleon

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MS400h deletes recording when power disconnected Empty Re: MS400h deletes recording when power disconnected

Mensaje  napoleon el Miér Jul 07, 2010 2:27 pm

Verified and MS400h deletes partial recordings for some reason:
before recording

/ # ls -l /tmp/hdd/volumes/HDD1/REC/
-rwxrwxrwx 1 root root 2293587968 Jul 6 01:10 Jahtunud jC'¤lg_ Kes on su isa__20100705_2320.ts
-rwxrwxrwx 1 root root 20791296 Jul 2 21:07 C'htusC'¶C'¶k viiele_20100702_2106.ts
/ #
there are 2 old recordings

turned on recording:
/ # ls -l /tmp/hdd/volumes/HDD1/REC/
-rwxrwxrwx 1 root root 0 Jul 6 21:46 Austria keldri saladused_20100706_2146.ts.lock
-rwxrwxrwx 1 root root 64876544 Jul 6 21:49 Austria keldri saladused_20100706_2146_R00.ts
-rwxrwxrwx 1 root root 2293587968 Jul 6 01:10 Jahtunud jC'¤lg_ Kes on su isa__20100705_2320.ts
-rwxrwxrwx 1 root root 20791296 Jul 2 21:07 C'htusC'¶C'¶k viiele_20100702_2106.ts
there is temporary file "Austria keldri saladused_20100706_2146_R00.ts" and lock file

disconnected power and looked HDD contents in computer
knoppix@Microknoppix:~$ ls -l /media/sdd1/REC/
total 2324996
-rwxrwxrwx 1 knoppix knoppix 0 Jul 6 21:46 Austria keldri saladused_20100706_2146.ts.lock
-rwxrwxrwx 1 knoppix knoppix 66416640 Jul 6 21:49 Austria keldri saladused_20100706_2146_R00.ts
-rwxrwxrwx 1 knoppix knoppix 2293587968 Jul 6 01:10 Jahtunud j??lg_ Kes on su isa__20100705_2320.ts
-rwxrwxrwx 1 knoppix knoppix 20791296 Jul 2 21:07 ??htus????k viiele_20100702_2106.ts
temporary file and lock file are still here, I can watch it and copy it to another disk


put hdd back to MS400h and reconnected power
/ # ls -la /tmp/hdd/volumes/HDD1/REC/
drwxrwxrwx 1 root root 0 Jul 6 22:21 .
drwxrwxrwx 1 root root 4096 Jul 2 23:44 ..
-rwxrwxrwx 1 root root 2293587968 Jul 6 01:10 Jahtunud jC'¤lg_ Kes on su isa__20100705_2320.ts
-rwxrwxrwx 1 root root 20791296 Jul 2 21:07 C'htusC'¶C'¶k viiele_20100702_2106.ts
/ #
old recordings are still here but temporary file is lost

napoleon

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MS400h deletes recording when power disconnected Empty Re: MS400h deletes recording when power disconnected

Mensaje  Admin el Miér Jul 07, 2010 3:23 pm

Very interesting testing you have done,
so you want to say is that LG have a kind of automatic cleaner process at boot time, that eliminate partial
recordings from the hard disk.

Do you think we might have add a trick that copies all these files_R00.ts into files.ts ...?

It seems LG is deleting all files ending in _R00.ts ...


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