13 Dec
2009
13 Dec
'09
4:37 p.m.
Write barriers were introduced to give data guarantees with hard drives that have their write cache enabled. Unfortunately, not everything has been given barrier support. LVM and JFS do not have write barrier support.
https://www.redhat.com/archives/dm-devel/2009-December/msg00079.html
"Barriers are now supported by all the types of dm devices."
Wunderbar!
Now if the IBM team will add barrier support to JFS...