30 Apr
2013
30 Apr
'13
1:12 a.m.
Craig Sanders <cas@taz.net.au> writes:
it's only safe to turn barriers off if disable any write-caching in the drive OR if you have a non-volatile write cache (e.g. hardware raid, something like bcache with an SSD, or ZFS with an SSD for ZIL), ^^^^
Not just hw raid, but hardware raid with a BBU or equivalent. I've seen at least one case where the BBU was an "optional extra" to make the base price look more reasonable, and $manager didn't notice it was a separate line item until it was too late...