Date: Sat, 06 May 2006 19:56:17 -0600 From: Scott Long <scottl@samsco.org> To: Robert Watson <rwatson@freebsd.org> Cc: Chris <chrcoluk@gmail.com>, Mike Jakubik <mikej@rogers.com>, stable@freebsd.org Subject: Re: quota deadlock on 6.1-RC1 Message-ID: <445D53C1.90601@samsco.org> In-Reply-To: <20060506204720.S46997@fledge.watson.org> References: <4457A02C.9040408@rogers.com> <35c231bf0605032011s65fbb1aby742438465ee98ee7@mail.gmail.com> <20060504033300.GA39935@xor.obsecurity.org> <44598615.3040400@rogers.com> <20060504044758.GA41047@xor.obsecurity.org> <44599732.1050905@rogers.com> <20060505080543.GD5466@garage.freebsd.pl> <35c231bf0605051049t2761281ar97b9634b8279b1fd@mail.gmail.com> <445B991F.3050600@rogers.com> <6.2.3.4.0.20060505145259.10d8dca0@64.7.153.2> <3aaaa3a0605061238ib77bb38x6f61eb6cc1c1c6c1@mail.gmail.com> <20060506204720.S46997@fledge.watson.org>
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Robert Watson wrote: > > On Sat, 6 May 2006, Chris wrote: > >> are snapshots a default setting? > > > In case people want to avoid using snapshots, here are the uses I'm > currently aware of in the base system: > > - Background file system check uses snapshots. This can be disabled by > using > background_fsck="NO" in /etc/rc.conf. > > - dump uses snapshots if the -L paramater is specified, in order to take an > atomic backup of the system. It won't use snapshots unless explicitly > specified. > > - mksnap_ffs uses snapshots, as it's the operator snapshot creation tool. > > FWIW, I and a moderate number of other people use snapshots daily on > quite busy and over-burdened machines without problems. > > Also, as an FYI, several quota-related snapshot fixes went into CVS in > the last 24-48 hours. Once they've settled for a few weeks, and > assuming they don't have complex dependencies, they will get merged to > RELENG_6. Presumably if there is sufficient demand, and they adequately > address the reports of deadlocks with quotas+snapshots, they could be > merged to RELENG_6_1 as an errata update. Exactly my thinking also. In about 2-3 weeks time, we'll review this and decide what to do. Scott
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