gitlab-com-seaweedfs/seaweedfs
1
0
Fork 0
mirror of https://github.com/seaweedfs/seaweedfs.git synced 2024-01-19 02:48:24 +00:00
Code Issues Projects Releases Wiki Activity

Updated FUSE Mount (markdown)

Chris Lu 2020-10-22 20:30:30 -07:00
parent edf6ea798e
commit 0e673e7ba8
1 changed files with 6 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
FUSE-Mount.md

@ -72,16 +72,17 @@ filer ---- mount1
`weed mount` has a persistent client connecting to Master, to get the location updates of all volumes. `weed mount` has a persistent client connecting to Master, to get the location updates of all volumes.
There are no network round trip to lookup the volume id location. There are no network round trip to lookup the volume id location.
`weed mount` also subscribe all metadata updates from the Filer. So later reads would not need a network read from Filer, and the metadata reads, e.g., directory listings, are all local operations.
For reads: For reads:
1. Client Reads File Metadata => Weed Filer => Weed Filer database (LevelDB, Cassandra, Redis, Mysql, Postgres, etc) 1. Mount optionally lookups volume Id => Weed Filer => Weed Master
2. Client optionally lookup volume Id => Weed Filer => Weed Master 2. Mount Reads File Chunks => Weed Volume Servers
3. Client Reads File Chunks => Weed Volume Servers
![](MountRead.png) ![](MountRead.png)
For writes: For writes:
1. Client uploads data to Weed Volume Servers, and breaks the large files into chunks. 1. Mount uploads data to Weed Volume Servers, and breaks the large files into chunks.
2. Client writes the metadata and chunk information into Filer and then into Filer database. 2. Mount writes the metadata and chunk information into Filer and then into Filer database.
![](MountWrite.png) ![](MountWrite.png)