TrueCloudLab
/
frostfs-node
18
1
Fork 20
Code Issues 87 Pull Requests 5 Actions Releases Activity

[#1121] docs: Change mode of shard components
DCO action / DCO (pull_request) Successful in 1m40s Details
Vulncheck / Vulncheck (pull_request) Successful in 3m32s Details
Build / Build Components (1.22) (pull_request) Successful in 4m27s Details
Build / Build Components (1.21) (pull_request) Successful in 4m34s Details
Tests and linters / Staticcheck (pull_request) Successful in 5m59s Details
Tests and linters / gopls check (pull_request) Successful in 6m1s Details
Tests and linters / Lint (pull_request) Successful in 6m52s Details
Tests and linters / Tests with -race (pull_request) Successful in 9m10s Details
Tests and linters / Tests (1.21) (pull_request) Successful in 9m36s Details
Tests and linters / Tests (1.22) (pull_request) Successful in 9m33s Details 

Signed-off-by: Alexander Chuprov <a.chuprov@yadro.com>
Alexander Chuprov 2024-05-13 23:21:20 +03:00
parent efc71d35db
commit bb8329e8d7
1 changed files with 10 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
docs/shard-modes.md
View File

@ -14,7 +14,16 @@ Each mode is characterized by two important properties:
| `read-only` | Read-only mode, only read operations are allowed, metabase is available. |
| `degraded` | Degraded mode in which metabase and write-cache is disabled. It shouldn't be used at all, because metabase can contain important indices, such as LOCK objects info and modifying operation in this mode can lead to unexpected behaviour. The purpose of this mode is to allow PUT/DELETE operations without the metabase if really necessary. |
| `degraded-read-only` | Same as `degraded`, but with only read operations allowed. This mode is used during SSD replacement and/or when the metabase error counter exceeds threshold. |
| `disabled` | Currently used only in config file to temporarily disable a shard. |
| `disabled` | Currently used only in config file to temporarily disable a shard.
## Shard and Component Status
| Shard Mode | Metabase Mode | Blobstore Mode | Writecache Mode | Pilorama Mode | Blobovnicza Tree Mode | FSTree Mode |
|-----------------------|---------------|----------------|-----------------|---------------|-----------------------|-------------|
| `Read-Only` | READ_ONLY | READ_ONLY | READ_ONLY | READ_ONLY | READ_ONLY | READ_ONLY |
| `Read-Write` | READ_WRITE | READ_WRITE | READ_WRITE | READ_WRITE | READ_WRITE | READ_WRITE |
| `Degraded-Read-Write` | CLOSED | READ_WRITE | CLOSED | CLOSED | READ_WRITE | READ_WRITE |
| `Degraded-Read-Only` | CLOSED | READ_ONLY | CLOSED | CLOSED | READ_ONLY | READ_ONLY |
## Transition order