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manpage: add prompt in --zero-superblock against clustered raid 

Clustered raid would be damaged if calls --zero-superblock
incorrectly, so add prompt in --zero-superblock chapter of
manpage. Such as: cluster node1 has assembled cluster-md,
but calls --zero-superblock in other cluster node.

Signed-off-by: Zhilong Liu <zlliu@suse.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
This commit is contained in:
Zhilong Liu 2018-02-02 14:10:50 +08:00 committed by Jes Sorensen
parent b3872c0284
commit b2a613ddd5
1 changed files with 4 additions and 0 deletions
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@ -1691,6 +1691,10 @@ overwritten with zeros. With
the block where the superblock would be is overwritten even if it
doesn't appear to be valid.
.B Note:
Be careful to call \-\-zero\-superblock with clustered raid, make sure
array isn't used or assembled in other cluster node before execute it.
.TP
.B \-\-kill\-subarray=
If the device is a container and the argument to \-\-kill\-subarray