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Yeah I think if it hadn’t been for the combination of Oracle and CDDL, Red Hat would have been more interested in for Linux. As it was they basically went with

by ghaff 2y ago

Yeah I think if it hadn’t been for the combination of Oracle and CDDL, Red Hat would have been more interested in for Linux. As it was they basically went with XFS and volume management. Fedora did eventually go with btrfs but dints know if there are are any plans for copy-on-write FS for RHEL at any point.

m4rtink 2y ago
Fedora Server uses XFS on LVM by default & you can do CoW with any modern filesystem on top of an LVM thin pool. And there is also the Stratis project Red Hat is involved in: https://stratis-storage.github.io/ https://stratis-storage.github.io/
- ghaff 2y ago
  It looks like btrfs is/was the default for just Fedora Workstation. I’m less connected to Red Hat filesystem details than I used to be.
- curt15 2y ago
  TIL Stratis is still alive. I thought it basically went on life support after the lead dev left Red Hat. Still no checksumming though...
ryao 2y ago
RedHat’s policy is no out of tree kernel modules, so it would not have made a difference.
- ghaff 2y ago
  It’s not like Red Hat had/has no influence over what makes it into mainline. But the options for copy on write were either relatively immature or had license issues in their view.
  - ryao 2y ago
    Their view is that if it is out of tree, they will not support it. This supersedes any discussion of license. Even out of tree GPL drivers are not supported by RedHat.