Storage: Enable nodatacow on BTRFS subvolume for block volumes #9627
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…me for block volumes This reduces the impact of random writes to large block files on the BTRFS quota. Although this does not entirely prevent CoW from taking up quota usage, as when a snapshot is taken, the first write to a block after that will cause a CoW and the new and old extent will be referenced as used in the quota Signed-off-by: Thomas Parrott <thomas.parrott@canonical.com>
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This reduces the impact of random writes to large block files on the BTRFS quota.
Although this does not entirely prevent CoW from taking up quota usage, as when a snapshot is taken,
the first write to a block after that will cause a CoW and the new and old extent will be referenced
as used in the quota
Related to #9124
Signed-off-by: Thomas Parrott thomas.parrott@canonical.com