fstrim fails for md-raid0 devices with 'the discard operation is not supported' in RHEL7
Issue
- 'fstrim' fails for md-raid0 devices with
the discard operation is not supportedin RHEL7.
fstrim -v /mount_point
fstrim: /mount_point: the discard operation is not supported
Environment
- Red Hat Enterprise Linux 7.2
- kernel higher than
3.10.0-229.el7.x86_64.
- kernel higher than
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