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Full Discussion: Not able to delete log file
Operating Systems Solaris Not able to delete log file Post 302865241 by Don Cragun on Friday 18th of October 2013 03:40:40 AM
Old 10-18-2013
Quote:
Originally Posted by solaris_1977
jlliagre, when I do do "cat soa.out", it was taking very long time to give output, so I did Ctlr+C and came out. This made me think that data is still so big here, even after nullify it. Am I wrong here ?
In future, what will be best to nullify it again, without taking application downtime ?
If you're going to use cat filename, you have a huge file and cat will read every byte of it. If you look at du filename, the number of disk blocks used to store the contents of the file may be small (as I explained before).

You haven't told us anything about what this application does nor why it is writing gigabytes into a file that the people using the application don't want to see. If you have a process that your users say you have to run continuously and it writes gigabytes of logs that no one wants to see, you can choose one of several options (including, but not limited to):
  1. Get the people to wrote the application to change it.
  2. Restart it regularly (and rotate or delete the log files while it is stopped).
  3. Buy bigger disks to hold all of the data you nobody wants.
  4. Patch the kernel to set the O_APPEND flag in the kernel table entry for the file descriptor involved and truncate it the way you're doing it now.
  5. Refuse to run an application that fills up your filesystems with huge amounts of unwanted data until your users provide a version of the application that work correctly.
  6. Try changing the log file to be a symlink pointing to /dev/null the next time you reboot your system before you start the application. (If the application removes or rotates log files when it restarts, this won't work.)
 

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LEARN ABOUT DEBIAN

install-solaris

install-solaris(1M)													       install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris	invokes  the  Solaris  Install	program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

	   Minimum physical memory for all installation types

       128 MB

	   Minimum physical memory required for windowing system

       384 MB

	   Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

	   Minimum physical memory for all installation types

       256 MB

	   Minimum physical memory required for windowing system

       512 MB

	   Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris	exists	only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcdrom  (Solaris instal-  |
       |			     |lation media)		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

								    23 Sep 2005 					       install-solaris(1M)
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