https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.4_Release_Notes/chap-Red_Hat_Enterprise_Linux-7.4_Release_Notes-Deprecated_Functionality.html
Btrfs has been deprecated
The Btrfs file system has been in Technology Preview state
since the initial release of Red Hat Enterprise Linux 6. Red
Hat will not be moving Btrfs to a fully supported feature and
it will be removed in a future major release of Red Hat
Enterprise Linux.
The Btrfs file system did receive numerous updates from the
upstream in Red Hat Enterprise Linux 7.4 and will remain
available in the Red Hat Enterprise Linux 7 series. However,
this is the last planned update to this feature.
I think RH roadmap is to use XFS over LVM.
This is a pity---BTRFS features looked attractive:
- integrated RAID that ties low level (block/stripe) issues
with high-level objects (files); I thought this is important
because with brfs filesystem integrity features filesystem-level
trouble could be tied to low level issues like silent failures
on one raid element. This is important and unique: I had seen
failures of large volumes both on proprietary RAID hardware and
in software RAID, due to silent corruption of one element of the
array, that propagated to other healthy elements.
- snapshotting/rollbacks that enable recovery system update
failures and other nice functionality
- scalable support for really large file systems (reasonable
fsck times, etc)
Are people who care about mass storage issues aware of RedHat's
plans and are OK with the situation? Are there any other options
apart from what RedHat is planning?
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