Add diskType parameter to:
- ecBalancer struct
- collectEcVolumeServersByDc()
- collectEcNodesForDC()
- collectEcNodes()
- EcBalance()
This allows EC operations to target specific disk types (hdd, ssd, etc.)
instead of being hardcoded to HardDriveType only.
For backward compatibility, all callers currently pass types.HardDriveType
as the default value. Subsequent commits will add -diskType flags to
the individual EC commands.
Improve safety for weed shells `ec.encode`.
The current process for `ec.encode` is:
1. EC shards for a volume are generated and added to a single server
2. The original volume is deleted
3. EC shards get re-balanced across the entire topology
It is then possible to lose data between #2 and #3, if the underlying volume storage/server/rack/DC
happens to fail, for whatever reason. As a fix, this MR reworks `ec.encode` so:
* Newly created EC shards are spread across all locations for the source volume.
* Source volumes are deleted only after EC shards are converted and balanced.
Improve parallelization for `ec.encode`.
Instead of processing one volume at at time, perform all EC conversion
steps (mark readonly -> generate EC shards -> delete volume -> remount) in
parallel for all of them.
This should substantially improve performance when EC encoding
entire collections.
* Don't ignore empty (`""`) collection names when computing collections for a given volume ID.
* `ec.encode`: Fix resolution of target collections.
When no `volumeId` parameter is provided, compute volumes
based on the provided collection name, even if it's empty (`""`).
This restores behavior to before recent EC rebalancing rework. See also
ec30a504ba/weed/shell/command_ec_encode.go (L99) .
This logic was originally part of `spreadEcShards()`, which got removed during
the unification effort with `ec.balance` (https://github.com/seaweedfs/seaweedfs/pull/6344),
accidentally breaking functionality in the process.
The commit restores the deletion code for EC'd volumes - with parallelization support.
* Begin implementing EC balancing parallelization support.
Impacts both `ec.encode` and `ec.balance`,
* Nit: improve type naming.
* Make the goroutine workgroup handler for `EcBalance()` a bit smarter/error-proof.
* Nit: unify naming for `ecBalancer` wait group methods with the rest of the module.
* Fix concurrency bug.
* Fix whitespace after Gitlab automerge.
* Delete stray TODO.
chrislusf
Chris Lu
NyaMisty
Lisandro Pin
wyang
Max Denushev
Konstantin Lebedev
chrislu