On 2018-07-31 11:45 PM, MegaBrutal wrote: > I know that with nodatacow, I take away most of the benefits of BTRFS > (those are actually hurting database performance – the exact CoW > nature that is elsewhere a blessing, with databases it's a drawback). > But are there any advantages of still sticking to BTRFS for a database > albeit CoW is disabled, or should I just return to the old and > reliable ext4 for those applications? >
Be very careful about nodatacow and btrfs 'raid'. BTRFS has no data synching mechanism for raid, so if your mirrors end up different somehow, your Array is going to be inconsistent.
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