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Operating Systems AIX Randomly appearing control characters in text files Post 302080377 by aakashahuja on Tuesday 18th of July 2006 05:26:02 AM
Old 07-18-2006
Randomly appearing control characters in text files

Hi,

From some time, we have noticed that our ascii files have started corrupting due to the presence of some random control characters (^@, ^M, ^H, ^D). The characters appear randomly on any file after the process that creates the file finishes. If we rerun the process, the files re creates perfectly without problems.

The appear on any file randomly. Their location in the file is also random. We tried a reboot of the server (AIX 5. something), but the problem still persists. We found some bad blocks on disk during reboot and then we did a restore from backup.

The problem still persists.

Thanks
Aakash
 

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runit-init(8)						      System Manager's Manual						     runit-init(8)

NAME
init - a UNIX process no 1 SYNOPSIS
init [ 0 | 6 ] DESCRIPTION
runit-init is the first process the kernel starts. If runit-init is started as process no 1, it runs and replaces itself with runit(8). If runit-init is started while the system is up, it must be either called as init 0 or init 6: init 0 tells the Unix process no 1 to shutdown and halt the system. To signal runit(8) the system halt request, runit-init removes all permissions of the file /etc/runit/reboot (chmod 0), and sets the execute by owner permission of the file /etc/runit/stopit (chmod 100). Then a CONT signal is sent to runit(8). init 6 tells the Unix process no 1 to shutdown and reboot the system. To signal runit(8) the system reboot request, runit-init sets the execute by owner permission of the files /etc/runit/reboot and /etc/runit/stopit (chmod 100). Then a CONT signal is sent to runit(8). EXIT CODES
runit-init returns 111 on error, 0 in all other cases. SEE ALSO
runit(8), runsvdir(8), runsvchdir(8), sv(8), runsv(8), chpst(8), utmpset(8), svlogd(8) http://smarden.org/runit/ AUTHOR
Gerrit Pape <pape@smarden.org> runit-init(8)
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