This is not needed on clean disks, which is often the case with cloud instances, but can be useful on bare metal servers with disks that were used before.
Therefore, the default is to skip blkdiscard operation, which makes overall installation faster.
If the user wishes to run it anyway, use the newly introduced --blkdiscard option of scylla_raid_setup to perform it.
Note: since we either perform online discard or schedule fstrim, the (previously used) space will gradually get trimmed, this way or another.
Fixes: https://github.com/scylladb/scylladb/issues/24470
Signed-off-by: Yaniv Kaul <yaniv.kaul@scylladb.com>
Closesscylladb/scylladb#24579
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