quota deadlock on 6.1-RC1

Scott Long scottl at samsco.org
Sun May 7 01:56:20 UTC 2006

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.


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