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 Erasure Coding for warm storage (markdown)

Chris Lu 2019-06-11 10:26:08 -07:00
parent 85f68860ae
commit 7714089f8a
1 changed files with 2 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
Erasure-Coding-for-warm-storage.md

@ -38,6 +38,8 @@ The scripts have 3 steps related to erasure coding.
The default command is `ec.encode -fullPercent=95 -quietFor=1h`. It will find volumes at least 95% of the maximum volume size, which is usually 30GB, and have no updates for 1 hour.
Note: One collection can contain both normal volumes and erasure coded volumes, with write requests going to normal volumes.
### Data Repair
If disks fail or servers fail, some data shards are lost. With erasure coding, we can recover the lost data shards from the remaining data shards.