Opened 13 years ago

Closed 13 years ago

#3427 closed defect (invalid)

Mythbackend crash if haddrive is powered down (hdparm -S 244)

Reported by: anonymous Owned by: Isaac Richards
Priority: minor Milestone: unknown
Component: mythtv Version: 0.20-fixes
Severity: medium Keywords: hdparm spin-down
Cc: Ticket locked: no

Description

I have made some looking around on the web and in this ticket system trying to find this issue but i haven't found anything.

I use "hdparm -S 244" to spin down my 400Gb hard drive when not in use. This results in a 2h waiting period before spindown. The disk is used for music storage, live-tv, video etc but the mysql database and the operating system is on another device.

If I tell my backend system, which is a dedicated server, to record shows once every week there are no problems whatsoever. The backend manages to spin-up the drive and record the show. However, if I happen to activate LiveTV as the first call to the mythbackend it will crash. I can avoid crashing the backend by going to "watch recordings" which will spin-up the drive and then show me a clip of selected recording in the list. I have tried going in to mythmusic and mythvideo as well as mythgallery before running Live-TV which all works fine.

I have experimented with the server disk and set it to spin down after 5 seconds and it seems like going to live-tv when the disk is powered down is a great way to crash the backend.

Change History (1)

comment:1 Changed 13 years ago by stuartm

Resolution: invalid
Status: newclosed

We need a backtrace to fix crashes.

http://www.mythtv.org/docs/mythtv-HOWTO-22.html#ss22.2

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