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xbianonpi / xbian

XBMC on Raspberry Pi, Bleeding Edge
https://xbian.org
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udev permission denied errors on boot #700

Closed Fabio72 closed 9 years ago

Fabio72 commented 9 years ago

Distribution: XBian 1.0 (knockout) Kodi: 14.2-RC1 Git:Unknown Kernel version: Linux 3.18.8+ armv6l Firmware: 115f63aa0915cdb5b6dff23822eb16699b72ae8b (4 Feb 2015 21:04:27) PI version B+

I'm getting two error messages at boot. They are very quick so I had to make a video to see something udev error opening /sys/devices/platform/mmc-bcm2835.0/mmc_host/mmc0/mmc0:59b4/block/mmcblk0/queue/iosched/slice_idle and udev error opening /sys/devices/platform/mmc-bcm2835.0/mmc_host/mmc0/mmc0:59b4/block/mmcblk0/queue/iosched/target_latency both for permission denied.

/sys/devices/platform/mmc-bcm2835.0/mmc_host/mmc0/mmc0:59b4/block/mmcblk0/queue/iosched is empty after boot Everything else is working fine, so maybe is only a cosmetic problem.

mk01 commented 9 years ago

@CurlyMoo @f1vefour @anaconda

guys, can any of you confirm that ?

@Fabio72

empty (non existing) queue/iosched is definitely not good ;)

CurlyMoo commented 9 years ago

I saw them sometimes but can't remember when...

anaconda commented 9 years ago

10-local-xbian.rules has:

ACTION=="add|change", KERNEL=="mmcblk0", ATTR{queue/iosched/slice_idle}="0"
ACTION=="add|change", KERNEL=="mmcblk0", ATTR{queue/iosched/target_latency}="120"

slice_idle here is 0 (so these rules are applied), but I don't have a target_latency:

$ sudo cat /sys/devices/platform/mmc-bcm2835.0/mmc_host/mmc0/mmc0\:0007/block/mmcblk0/queue/iosched/target_latency
cat: /sys/devices/platform/mmc-bcm2835.0/mmc_host/mmc0/mmc0:0007/block/mmcblk0/queue/iosched/target_latency: No such file or directory

iosched is not empty here, but this a Pi 2 (3.18.8+).

Fabio72 commented 9 years ago

https://plus.google.com/118154946688569975412/posts/ertVfXjJxvE

I have too ACTION=="add|change", KERNEL=="mmcblk0", ATTR{queue/iosched/slice_idle}="0" ACTION=="add|change", KERNEL=="mmcblk0", ATTR{queue/iosched/target_latency}="120" but root@xbian ~ # ls -l /sys/devices/platform/mmc-bcm2835.0/mmc_host/mmc0/mmc0:59b4/block/mmcblk0/queue/iosched totale 0

Fabio72 commented 9 years ago

Maybe I solved! I found scheduler=noop on my cmdline.txt. I don't kown why, maybe it comes from where I copied the configuration for nfs root. I must wait to go home to double check but after changing scheduler on the fly queue/iosched is not empty any more