Date: Wed, 19 May 2010 01:13:12 -1000 (HST) From: Jeff Roberson <jroberson@jroberson.net> To: Roman Bogorodskiy <bogorodskiy@gmail.com> Cc: current@freebsd.org Subject: Re: ffs_copyonwrite panics Message-ID: <alpine.BSF.2.00.1005190112030.1398@desktop> In-Reply-To: <20100518185201.GA2745@fsol> References: <20100518185201.GA2745@fsol>
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On Tue, 18 May 2010, Roman Bogorodskiy wrote: > Hi, > > I've been using -CURRENT last update in February for quite a long time > and few weeks ago decided to finally update it. The update was quite > unfortunate as system became very unstable: it just hangs few times a > day and panics sometimes. > > Some things can be reproduced, some cannot. Reproducible ones: > > 1. background fsck always makes system hang > 2. system crashes on operations with nullfs mounts (disabled that for > now) > > The most annoying one is ffs_copyonwrite panic which I cannot reproduce. > The thing is that if I will run 'startx' on it with some X apps it will > panic just in few minutes. When I leave the box with nearly no stress > (just use it as internet gateway for my laptop) it behaves a little > better but will eventually crash in few hours anyway. This may have been my fault. Can you please update and let me know if it is resolved? There was both a deadlock and a copyonwrite panic as a result of the softupdates journaling import. I just fixed the deadlock today. Thanks, Jeff > > The even more annoying thing is that when I cannot save the dump, > because when the system boots and runs 'savecore' it leads to > fss_copyonwrite panic as well. The panic happens when about 90% complete > (as seem via ctrl-t). > > Any ideas how to debug and get rid of this issue? > > System arch is amd64. I don't know what other details could be useful. > > Roman Bogorodskiy >
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