/etc/lvm/lvm.conf tells us not to use raid10_segtype_default=mirror, then proceeds to do just that.<br />
<br />
Which is wrong, the documentation, or the configuration setting?<br />
<br />
This probably should be raised in RH bugzilla.<br />
<br />
# 'raid10_segtype_default' determines the segment types used by default<br />
# when the '--stripes/-i' and '--mirrors/-m' arguments are both specified<br />
# during the creation of a logical volume.<br />
# Possible settings include:<br />
#<br />
# "raid10" - This implementation leverages MD's RAID10 personality through<br />
# device-mapper.<br />
#<br />
# "mirror" - LVM will layer the 'mirror' and 'stripe' segment types. It<br />
# will do this by creating a mirror on top of striped sub-LVs;<br />
# effectively creating a RAID 0+1 array. This is suboptimal<br />
# in terms of providing redunancy and performance. Changing to<br />
# this setting is not advised.<br />
# Specify the '--type <raid10|mirror>' option to override this default<br />
# setting.<br />
raid10_segtype_default = "mirror"
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