[clue-tech] SYSFS_DEPRECIATED_V2

dennisjperkins at comcast.net dennisjperkins at comcast.net
Thu Feb 19 10:26:06 MST 2009


If you are using HAL and D-Bus, you want sysfs enabled. I would be very surprised if CentOS does not use them. 

I don't know why you mention a SYSFS_DEPRECATED_V2 in the header. Is there a newer version in the kernel? 

----- Original Message ----- 
From: "mike havlicek" <mhavlicek1 at yahoo.com> 
To: clue-tech at cluedenver.org 
Sent: Thursday, February 19, 2009 9:27:00 AM GMT -07:00 US/Canada Mountain 
Subject: [clue-tech] SYSFS_DEPRECIATED_V2 

Hello, 

I am building a v2.6.28.6 kernel for use with CentOS 5.2. In general whats a definitative way to determine if a distro needs this feature? 

I have done a "find /sys/class | xargs ls -l | grep l" and get entries like 

lrwxrwxrwx 1 root root 0 Feb 19 08:10 \ 
device -> ../../../devices/pci0000:00/0000:00:0f.2 

which leads me to believe the stock running kernel (2.6.18-92el5PAE) on 
this machine has "some" SYSFS enabled. The question is whether it is necessary. 

Ultimately I am trying to alleviate some more irritating problems that I see from this vanilla install: 

- calls to hwclock fail 
- kjournald eventually fails 

I also get messages of the form: 

EXT3-fs error (device dm-3) in start_transaction: Journal has aborted 

and from syslogd 

kernel: journal commit I/O error. 

Other than /boot being on /dev/sda2 (ext3), the rest of the system is installed on a single lvm2 volgroup with 5 logical volumes: all with ext3 
except a swap. 

When these things happen, I think methods of logging are confined to 
stylo & papier ... and I haven't had that subsystem fully functioning. 

Thanks, 

-Mike 





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