Date: Mon, 27 Aug 2007 07:35:28 -0700 (PDT) From: Juri Mianovich <juri_mian@yahoo.com> To: freebsd-fs@freebsd.org Subject: Re: How do I get back my previous minfree level of performance ? Message-ID: <149421.31053.qm@web45601.mail.sp1.yahoo.com>
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--- JH <jh@s6.sector6.net> wrote: > Setting minfree very very low probably isn't wise, > but I'm sure you knew > about cylinder groups and block allocation before > your change, so I won't > flog *that* horse. Please do... I knew it was a "bad" idea, but given how it was working perfectly with a minfree of one, I didn't think it would be the end of the world moving it to zero. But more to the point, I thought that if I did not use up the space that I gained by going to zero, I could always go back to one without any repurcussions. It turns out I can't, and that is the point of this post. > On 8/27/07, Juri Mianovich <juri_mian@yahoo.com> > wrote: > > > the crashes that going to zero caused _persist_ > after going back to one. > > > Please describe "crash" in a follow-up message to > the list. > Maybe some output from "bt" (backtrace) or similar > would be helpful? Advice > on reporting kernel trouble may be found at System floods the console with: Warning! Controller is no longer running! code=0xbcef0100 (after a page or so of aac0 timeout messages) It's not interesting - anyone can crash the aac card with too much filesystem stress. I have seen it many times before. The problem is that this time, I cannot reduce the stress by doing anything but leaving that particular filesysem unmounted. But troubleshooting and reducing causes has made it perfectly clear that _it really is_ the change of minfree from 1 -> 0 -> 1 that has caused this problem. So the questions remains: 1. what did I do to my filesystem when I changed the minfree from 1 to 0 to 1 ? How is my current minfree-of-1 filesystem different from my old minfree-of-1 filesystem ? 2. How do I get back my old minfree-of-1 filesystem ? I have enough free space to do it (of course, since it currently _is_ at minfree of 1) ... do I need to defragment, or maybe delete some more files and go to a minfree of 2 ? Or has that filesystem become too jumbled for any amount of minfree to get it back to normal ? Thanks. > > ____________________________________________________________________________________ > Building a website is a piece of cake. Yahoo! Small > Business gives you all the tools to get online. > http://smallbusiness.yahoo.com/webhosting > ____________________________________________________________________________________ Luggage? GPS? Comic books? Check out fitting gifts for grads at Yahoo! Search http://search.yahoo.com/search?fr=oni_on_mail&p=graduation+gifts&cs=bz
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