From ecdfea2ec33178ef0ae1da3089bba9f99932f19e Mon Sep 17 00:00:00 2001
From: Rishabh Dave <ridave@redhat.com>
Date: Mon, 20 Feb 2023 12:49:48 +0530
Subject: [PATCH] client: add comment about how quota affect space usage report
Add a comment to explain that setting quota on a CephFS directory makes
a difference to how much available space on CephFS is reported when that
directory serves as the root of the CephFS mount.
Signed-off-by: Rishabh Dave <ridave@redhat.com>
---
src/client/Client.cc | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/client/Client.cc b/src/client/Client.cc
index a7211d5af7e..5c24dbdf398 100644
--- a/src/client/Client.cc
+++ b/src/client/Client.cc
@@ -11258,6 +11258,9 @@ int Client::statfs(const char *path, struct statvfs *stbuf,
// enabled
ceph_assert(cct->_conf.get_val<bool>("client_quota") == false || quota_root != nullptr);
+ /* If bytes quota is set on a directory and conf option "client quota df"
+ * is also set, available space = quota limit - used space. Else,
+ * available space = total space - used space. */
if (quota_root && cct->_conf->client_quota_df && quota_root->quota.max_bytes) {
// Skip the getattr if any sessions are stale, as we don't want to