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On 26/08/2013 05:30, meino.cramer@×××.de wrote: |
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> Philip Webb <purslow@××××××××.net> [13-08-26 04:35]: |
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>> 130825 Pavel Volkov suggested: |
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>>> On Sunday 25 August 2013 20:26:32 meino.cramer@×××.de asked: |
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>>>> So...which ghost in my system dares to set the symlink /dev/rtc |
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>>>> to point to /dev/rtc0 instead of /dev/rtc1 ??? |
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>>> I bet it's /usr/lib64/udev/rules.d/50-udev-default.rules |
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>> |
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>> I have /usr/udev/rules.d/50-udev-default.rules (on a 64-bit system), |
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>> which contains the lines : |
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>> |
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>> # select "system RTC" or just use the first one |
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>> SUBSYSTEM=="rtc", ATTR{hctosys}=="1", SYMLINK+="rtc" |
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>> SUBSYSTEM=="rtc", KERNEL=="rtc0", SYMLINK+="rtc", OPTIONS+="link_priority=-100" |
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>> |
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>> However, in /dev I have : |
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>> |
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>> crw------- 1 root root 10, 135 Aug 25 07:39 /dev/rtc |
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>> |
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>> ie it's not a symlink. I'm using udev-204 . |
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>> |
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>> HTH |
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>> |
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>> -- |
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>> ========================,,============================================ |
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>> SUPPORT ___________//___, Philip Webb |
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>> ELECTRIC /] [] [] [] [] []| Cities Centre, University of Toronto |
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>> TRANSIT `-O----------O---' purslowatchassdotutorontodotca |
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>> |
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>> |
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> |
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> Hi, |
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> |
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> I finally found the culprit: |
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> |
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> There udev-related files under /lib, where I did not search for it. |
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> I had expected them under /etc... |
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> I fixed one of the rules and now there is the correct link. |
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> |
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> Nonetheless, ls -l /proc shows: |
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> beagleboneblack:/root>ls -l /proc |
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> total 0 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 1 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 10 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 11 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 12 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 13 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 14 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 15 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 16 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 17 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 18 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 188 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 19 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 196 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 2 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 20 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 21 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 24 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 27 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 3 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 36 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:12 362 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:12 363 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:12 364 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:12 365 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 38 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 39 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 40 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 41 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 42 |
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> dr-xr-xr-x 8 messagebus messagebus 0 2013-08-26 05:12 436 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 45 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 46 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 5 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 53 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 55 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 56 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:12 612 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:12 632 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 69 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:12 698 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 7 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 70 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 71 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 74 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 75 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 76 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 79 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 8 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 80 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:12 800 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:12 855 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:13 882 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:13 883 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:13 884 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:13 885 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:13 886 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:13 887 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:13 896 |
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> dr-xr-xr-x 8 root root 0 1970-01-01 01:00 9 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:13 900 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:28 917 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:28 955 |
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> dr-xr-xr-x 8 root root 0 2013-08-26 05:28 966 |
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> dr-xr-xr-x 4 root root 0 2013-08-26 05:28 asound |
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> -r--r--r-- 1 root root 0 2013-08-26 05:28 buddyinfo |
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> dr-xr-xr-x 3 root root 0 2013-08-26 05:28 bus |
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> -r--r--r-- 1 root root 0 2013-08-26 05:28 cgroups |
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> -r--r--r-- 1 root root 0 2013-08-26 05:28 cmdline |
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> -r--r--r-- 1 root root 26642 2013-08-26 05:28 config.gz |
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> -r--r--r-- 1 root root 0 2013-08-26 05:28 consoles |
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> dr-xr-xr-x 2 root root 0 2013-08-26 05:28 cpu |
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> -r--r--r-- 1 root root 0 2013-08-26 05:28 cpuinfo |
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> -r--r--r-- 1 root root 0 2013-08-26 05:28 crypto |
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> dr-xr-xr-x 12 root root 0 2013-08-26 05:28 device-tree |
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> |
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> There are still files stamped with the UNIX's big bang moment. |
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> But the kernel is configured to use rtc1 instead of rtc0. |
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> |
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> The journey isn't at its end, still. |
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> |
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> ANy further ideas ? |
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> |
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> Best regards, |
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> mcc |
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|
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Does it really matter ? |
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|
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Those files with Epoch timestamps are PIDs started very early. They are |
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probably kernel threads exposed as PIDs anyway, and there's serious |
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magic going on to make that all work. It all happens after init starts |
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but before your rtc gets set and ntp starts. |
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|
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You seem to have accomplished the bits that matter and are now chasing |
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after other bits that don't. I say it's time to stop and say it's good |
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enough |
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|
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Consider this: that cpu has an rtc on-board, it has no battery. Every OS |
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in existence is going to have the same issue in some form or other, and |
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yet it doesn't seem to matter as stuff works. |
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|
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|
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-- |
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Alan McKinnon |
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alan.mckinnon@×××××.com |
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