dmesg output

Marco Gonçalves marco at aces.pt
Fri Aug 29 07:05:23 PDT 2003


I wanted to clear the dmesg -a output because i had this problem with a IDE disk, wich give this message all over

ad0s1g: hard error reading fsbn 133851519 of 65253984-65254015 (ad0s1 bn 133851519; cn 8331 tn 222 sn 18) status=59 error=40
ad0s1g: hard error reading fsbn 133851519 of 65253984-65254015 (ad0s1 bn 133851519; cn 8331 tn 222 sn 18) status=59 error=40
ad0s1g: hard error reading fsbn 133851519 of 65253984-65254015 (ad0s1 bn 133851519; cn 8331 tn 222 sn 18) status=59 error=40
... and so one

i mirrored the disk and change with other, and now is dificult to see if that is ok...unless i clear the buffer to see if the messages keep on 

by the way can i use fsck on a multi-user runing server?

  ----- Original Message ----- 
  From: Lowell Gilbert 
  To: Marco Gonçalves 
  Cc: freebsd-questions at freebsd.org 
  Sent: Friday, August 29, 2003 1:58 AM
  Subject: Re: dmesg output


  =?Windows-1252?Q?Marco_Gon=E7alves?= <marco.goncalves at aces.pt> writes:

  > Email TemplateHow can i delete the 'dmesg -a' last output buffer

  Assuming I'm understanding you correctly (you want to clear the system
  message buffer?)  you shouldn't be able to do that while the system is
  running.  It's a security precaution.  Maybe if you explained why you
  wanted to do it, we'd be able to help.

  > /var/run/dmesg.boot - but it just shows the hardware boot

  It shows the contents of the system message buffer immediately after
  the kernel boots.

  > /var/log/dmesg.today - seems like a copy of /var/run/dmesg.boot

  It should be the contents of the system message buffer at the time of
  the daily periodic(8) run.

  > /var/log/dmesg.eyesterday - seems to me like the dmesg -a output before last reboot...

  It should be the previous day's dmesg.today file.



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