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.
Robert N M Watson
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