diff options
| author | Zac Dover <zac.dover@proton.me> | 2023-09-28 20:40:08 +0200 |
|---|---|---|
| committer | Zac Dover <zac.dover@proton.me> | 2023-09-29 07:26:13 +0200 |
| commit | d7b991646fcd36a1df7456e8e82c9d54a01e50f9 (patch) | |
| tree | 2f2b8c588ef66efa2394307f4c92eebf55d849b8 /doc/architecture.rst | |
| parent | Merge PR #53594 into main (diff) | |
| download | ceph-d7b991646fcd36a1df7456e8e82c9d54a01e50f9.tar.xz ceph-d7b991646fcd36a1df7456e8e82c9d54a01e50f9.zip | |
doc/architecture: edit "Data Scrubbing"
Edit the "Data Scrubbing" listitem in the list of benefits conferred by
the use by OSDs of the aggregate power of the cluster, in the section
"Smart Daemons Enable Hyperscale" in doc/architecture.rst.
Co-authored-by: Anthony D'Atri <anthony.datri@gmail.com>
Signed-off-by: Zac Dover <zac.dover@proton.me>
Diffstat (limited to 'doc/architecture.rst')
| -rw-r--r-- | doc/architecture.rst | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/doc/architecture.rst b/doc/architecture.rst index a01c3e73d90..0f173573ef2 100644 --- a/doc/architecture.rst +++ b/doc/architecture.rst @@ -420,15 +420,15 @@ the greater cluster provides several benefits: lightweight processes. See `Monitoring OSDs`_ and `Heartbeats`_ for additional details. -#. **Data Scrubbing:** As part of maintaining data consistency and cleanliness, - Ceph OSD Daemons can scrub objects. That is, Ceph OSD Daemons can compare - their local objects metadata with its replicas stored on other OSDs. Scrubbing - happens on a per-Placement Group base. Scrubbing (usually performed daily) - catches mismatches in size and other metadata. Ceph OSD Daemons also perform deeper - scrubbing by comparing data in objects bit-for-bit with their checksums. - Deep scrubbing (usually performed weekly) finds bad sectors on a drive that - weren't apparent in a light scrub. See `Data Scrubbing`_ for details on - configuring scrubbing. +#. **Data Scrubbing:** To maintain data consistency, Ceph OSD Daemons scrub + RADOS objects. Ceph OSD Daemons compare the metadata of their own local + objects against the metadata of the replicas of those objects, which are + stored on other OSDs. Scrubbing occurs on a per-Placement-Group basis, finds + mismatches in object size and finds metadata mismatches, and is usually + performed daily. Ceph OSD Daemons perform deeper scrubbing by comparing the + data in objects, bit-for-bit, against their checksums. Deep scrubbing finds + bad sectors on drives that are not detectable with light scrubs. See `Data + Scrubbing`_ for details on configuring scrubbing. #. **Replication:** Like Ceph Clients, Ceph OSD Daemons use the CRUSH algorithm, but the Ceph OSD Daemon uses it to compute where replicas of |