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  • 1.  errpt about the "dumpcheck The copy directory is too small"

    Posted Mon December 11, 2006 07:02 PM

    Originally posted by: SystemAdmin


    My errpt reported that several of "the copy directory is too small". From someone´s article, it said that IBM recommended that no "mirror the system dump device" and do not use the secondary dump device. But as I check the sysdumpdev -l, it showd that /dev/hd4 is the secondary device. So should I care about the message? checking on the hd4 also indicated it is mirror, with COPIES = 2. If I need to increase the dump device, how much more? just above the sysdumpdev -e? currently is # sysdumpdev -e
    0453-041 Estimated dump size in bytes: 200068300.
    #AIX-Forum


  • 2.  Re: errpt about the "dumpcheck The copy directory is too small"

    Posted Tue December 12, 2006 07:33 AM

    Originally posted by: SystemAdmin


    You should care about this message if and only if you will ever want the contents of a crash dump. This dump is written by default to the primary paging space and at reboot is copied to the copy directory. You can confirm what these are by

    sysdumpdev -l

    The error message is telling you that there isn't enough space free in the copy directory to store a dump of estimated size. The size of a crash dump is a bit of a moving target because it depends on the number of running processes and what they're all doing at the time. You can get an estimate of this size in bytes by

    sysdumpdev -e

    Your mileage may vary and an actual dump could be bigger than this. You can cover yourself by changing the copy directory to a filesystem with lots of free space by

    sysdumpdev -D /lots/of/free/space/filesystem

    HTH

    Jim Lane
    #AIX-Forum


  • 3.  Re: errpt about the "dumpcheck The copy directory is too small"

    Posted Wed December 13, 2006 09:49 AM

    Originally posted by: SystemAdmin


    How about increase the size of the secondary in the sysdumpdev -l, will that help? Another thing puzzles me is that the errpt seems to run daily around 3 pm. Does this timing have anything to do paging activity, ie paging dumping its content to copy directory? why 3 pm? can I can change to other time?
    #AIX-Forum


  • 4.  Re: errpt about the "dumpcheck The copy directory is too small"

    Posted Wed December 13, 2006 09:50 AM

    Originally posted by: SystemAdmin


    How about increase the size of the secondary in the sysdumpdev -l, will that help? If it is a copy from paging to dump, should it be same size of the paging space at run time? Another thing puzzles me is that the errpt seems to run daily around 3 pm. Does this timing have anything to do paging activity, ie paging dumping its content to copy directory? why 3 pm? can I can change to other time?
    #AIX-Forum


  • 5.  Re: errpt about the "dumpcheck The copy directory is too small"

    Posted Thu December 14, 2006 07:33 AM

    Originally posted by: SystemAdmin


    The 3PM business is most likely because of a cron job that scheduled to run at that time. Have a look at your root crons to see what's there.
    #AIX-Forum


  • 6.  Re: errpt about the "dumpcheck The copy directory is too small"

    Posted Mon December 18, 2006 12:53 PM

    Originally posted by: SystemAdmin


    Yes, I found the crob job is set at 1500 hour by default. Is any reason to set that hour? becuase of businees? is any significant of the hour it runs?
    #AIX-Forum


  • 7.  Re: errpt about the "dumpcheck The copy directory is too small"

    Posted Tue December 19, 2006 10:53 AM

    Originally posted by: SystemAdmin


    I'm sure there's nothing sacred about 15:00. Jobs like this are usually scheduled for periods of low system activity. You can change it to whenever you like.
    #AIX-Forum


  • 8.  Re: errpt about the "dumpcheck The copy directory is too small"

    Posted Fri January 05, 2007 03:02 PM

    Originally posted by: SystemAdmin


    After I used sysdumpdev -D /filesystem/largerFreeSpace, I am still getting the "the copy directory is too samll" message in errpt every afternoon. sysdumpdev -e
    0453-041 Estimated dump size in bytes: 228589568
    I am sure the largerFreeSpace dir is more than that number. So when else caused the problem?
    #AIX-Forum


  • 9.  Re: errpt about the "dumpcheck The copy directory is too small"

    Posted Tue December 19, 2006 08:03 PM

    Originally posted by: dukessd


    For accurate results you need to check the dump size when the system is busy, hence it runs at 3pm not 3am.
    If checking the dump size causes your system performance issues you have bigger problems than if your dump device is big enough, although it will probably be dumping quite soon...
    #AIX-Forum


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