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author | Qiaowei Ren <qiaowei.ren@intel.com> | 2018-01-04 13:43:33 +0800 |
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committer | Qiaowei Ren <qiaowei.ren@intel.com> | 2018-01-05 11:59:39 +0800 |
commit | 812ff6ca9fcd3e629e49d4328905f33eee8ca3f5 (patch) | |
tree | 04ece7b4da00d9d2f98093774594f4057ae561d4 /src/ceph/doc/dev/delayed-delete.rst | |
parent | 15280273faafb77777eab341909a3f495cf248d9 (diff) |
initial code repo
This patch creates initial code repo.
For ceph, luminous stable release will be used for base code,
and next changes and optimization for ceph will be added to it.
For opensds, currently any changes can be upstreamed into original
opensds repo (https://github.com/opensds/opensds), and so stor4nfv
will directly clone opensds code to deploy stor4nfv environment.
And the scripts for deployment based on ceph and opensds will be
put into 'ci' directory.
Change-Id: I46a32218884c75dda2936337604ff03c554648e4
Signed-off-by: Qiaowei Ren <qiaowei.ren@intel.com>
Diffstat (limited to 'src/ceph/doc/dev/delayed-delete.rst')
-rw-r--r-- | src/ceph/doc/dev/delayed-delete.rst | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/ceph/doc/dev/delayed-delete.rst b/src/ceph/doc/dev/delayed-delete.rst new file mode 100644 index 0000000..bf5f65a --- /dev/null +++ b/src/ceph/doc/dev/delayed-delete.rst @@ -0,0 +1,12 @@ +========================= + CephFS delayed deletion +========================= + +When you delete a file, the data is not immediately removed. Each +object in the file needs to be removed independently, and sending +``size_of_file / stripe_size * replication_count`` messages would slow +the client down too much, and use a too much of the clients +bandwidth. Additionally, snapshots may mean some objects should not be +deleted. + +Instead, the file is marked as deleted on the MDS, and deleted lazily. |