On 24/1/20 3:28 PM, Qu Wenruo wrote:
On 2020/1/24 下午3:25, Anand Jain wrote:
There are known performance and counting errors for the quota when qgroup is
enabled.
Counting error is a big problem, please report if you found one not
caused by impersistent qgroup status.
I mean the already known issues btrfs/153 (count error on write to
falloc-ed space) and btrfs/179 (after a lot of snapshot
create and distroy with fsstress on subvol the btrfs check
reports qgroup count diff).
For performance, we still have problem, but that should only be snapshot
dropping.
Balance is no longer a big problem.
Personally I think the current man page still stands.
IMO kernel version in the man page is bit confusing though when
its still unstable.
Thanks, Anand
Thanks,
Qu
Signed-off-by: Anand Jain <anand.jain@xxxxxxxxxx>
---
Documentation/btrfs-qgroup.asciidoc | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/Documentation/btrfs-qgroup.asciidoc b/Documentation/btrfs-qgroup.asciidoc
index 0c9f5940a1d3..2da3d7819ba6 100644
--- a/Documentation/btrfs-qgroup.asciidoc
+++ b/Documentation/btrfs-qgroup.asciidoc
@@ -16,8 +16,7 @@ DESCRIPTION
NOTE: To use qgroup you need to enable quota first using *btrfs quota enable*
command.
-WARNING: Qgroup is not stable yet and will impact performance in current mainline
-kernel (v4.14).
+WARNING: Qgroup is an unstable feature as of now.
QGROUP
------
