Ok - next time it faults ill restart in gdb. I've run it in gdb before and the darn thing wouldn't crash! Hopefully I can catch it this time!
----- Original Message ----- From: [email protected] <[email protected]> To: [email protected] <[email protected]> Sent: Thu Apr 16 18:31:58 2009 Subject: Re: [Ntop] NTOP is crashing - dnscache.db corruption On Apr 17, 2009, at 1:24 AM, Gary Gatten wrote: > I just left for the day but will let you know tomorrow. Had another > sig 11 this morning during/after an IDLE_PURGE process. Could this > be related to the dnsCache.db or something completely different? > I can't tell you. You need at least to send me the gdb trace in order to investigate what's happening Thanks Luca > > ----- Original Message ----- > From: [email protected] <[email protected]> > To: [email protected] <[email protected]> > Sent: Thu Apr 16 18:09:40 2009 > Subject: Re: [Ntop] NTOP is crashing - dnscache.db corruption > > Hi all, > while trying to address this problem, I wondered if this problem > happens with every GDBM version or with a specific version. What GDBM > version are you using? > > Thanks Luca > > On Apr 15, 2009, at 12:31 AM, Gary Gatten wrote: > > > I don't know how to reproduce it. Sometimes it runs fine for weeks > > before corruption, other times only days. If the dnsCache.db is > only > > temporary - containing IP's to be resolved and NOT caching lookups > > that > > have already been resolved - then my suggestion to turn this off > > with a > > flag would obviously not work. Eventually most people would want > the > > IP's resolved. > > > > I'm not 100% convinced the file is bad. 99%, but not 100%. Is > > there a > > tool I / we can use to determine for certain if the file is > corrupted? > > I'm assuming there is but haven't looked into it. Maybe there's a > > tool > > for checking/fixing/packing this file occasionally? Or maybe add > some > > trap logic in nTop to handle a broken file better - such as: if > > reading/writing the dnsCache.db (any file) returns a non zero return > > code, disable further name resolution and write error to log file. > > This > > would at least stop the crashing. Next step would be to disable > > resolution, try to fix the file, if successful continue resolution - > > if > > not, disable resolution and write error to log. > > > > I'll help resolve this issue however I can. Not being much of a > > programmer / developer I'm not sure how much benefit I can be. If > you > > could at least point me to the source where this I/O is done I could > > try > > - or ask one of our C developers to take a look. > > > > -----Original Message----- > > From: [email protected] [mailto:[email protected]] On Behalf > > Of > > Luca Deri > > Sent: Tuesday, April 14, 2009 4:59 PM > > To: [email protected] > > Subject: Re: [Ntop] NTOP is crashing - dnscache.db corruption > > > > Hi all > > I see that this issue is heavily discussed. I admit that i have not > > followed too much this issue. Basically the problem is that the > > temporary DB that holds the list of hosts to be resolved gets > > corrupted, correct? Do you have a simple way to reproduce this > > problem? > > > > thanks Luca > > > > On Apr 14, 2009, at 11:41 PM, Terry Martin wrote: > > > >> Gary > >> > >> Yes I do understand that it is open source and I don't expect it to > >> be perfect. > >> > >> I am going to have one of my programmers see what they can do. > >> > >> > >> > >> Terry Martin > >> TimeData Corporation > >> VP of Network Operation > >> West Coast Number 503-678-2224 > >> Cell: 503-318-8909 > >> > >> > >> -----Original Message----- > >> From: [email protected] [mailto:[email protected]] On > Behalf > >> Of Gary Gatten > >> Sent: Tuesday, April 14, 2009 1:52 PM > >> To: [email protected] > >> Subject: Re: [Ntop] NTOP is crashing - dnscache.db corruption > >> > >> It is opensource after all, so I'm sure someone could dig into it > and > >> find out why it's breaking. If I knew C better I'd give it a shot, > >> but > >> it would take me 100 times longer than someone C literate, so I'm > >> passing on this one! > >> > >> Some months ago someone was having the problem often and was > >> supposed to > >> provide a copy of a bad db file to Luca and/or Burton. I don't > know > >> the > >> status of that. > >> > >> -----Original Message----- > >> From: [email protected] [mailto:[email protected]] On > Behalf > >> Of > >> Ian McDonald > >> Sent: Tuesday, April 14, 2009 2:54 PM > >> To: [email protected] > >> Subject: Re: [Ntop] NTOP is crashing > >> > >> Terry Martin wrote: > >>> Gary > >>> > >>> > >>> > >>> It was 170 MB. If I disable lookups then I can't resolve IP > >> addresses. > >>> > >>> > >>> > >>> Boy I would like to find fix for this. > >>> > >>> > >>> > >> > >> You and the rest of us. > >> > >> -- > >> ian > >> _______________________________________________ > >> Ntop mailing list > >> [email protected] > >> http://listgateway.unipi.it/mailman/listinfo/ntop > >> > >> > >> > >> > >> > >> <font size="1"> > >> <div style='border:none;border-bottom:double windowtext > >> 2.25pt;padding:0in 0in 1.0pt 0in'> > >> </div> > >> "This email is intended to be reviewed by only the intended > recipient > >> and may contain information that is privileged and/or confidential. > >> If you are not the intended recipient, you are hereby notified that > >> any review, use, dissemination, disclosure or copying of this email > >> and its attachments, if any, is strictly prohibited. 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