Support writecache migration #569

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opened 2023-08-07 08:19:42 +00:00 by fyrchik · 1 comment

fyrchik commented

2023-08-07 08:19:42 +00:00

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This is a bit simpler than blobstor migration:

Add some --disable-after flag to the control shards flush-cache command. With this flag everything is flushed from the writecache and the writecache itself is moved to read-only.
After this we may just start a new version of node with a new cache.

"Proper" migration is harder and probably not worth the effort.

This is a bit simpler than blobstor migration: 1. Add some `--disable-after` flag to the `control shards flush-cache` command. With this flag everything is flushed from the writecache and the writecache itself is moved to read-only. 2. After this we may just start a new version of node with a new cache. "Proper" migration is harder and probably not worth the effort.

fyrchik added the

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frostfs-node

labels 2023-08-07 08:19:42 +00:00

fyrchik added this to the v0.37.0 milestone 2023-08-07 08:19:46 +00:00

fyrchik modified the milestone from v0.37.0 to v0.38.0

2023-08-21 17:59:49 +00:00

fyrchik modified the milestone from v0.38.0 to v0.37.0

2023-08-21 17:59:58 +00:00

fyrchik modified the milestone from v0.37.0 to v0.38.0

2023-08-29 09:12:30 +00:00

dstepanov-yadro self-assigned this 2023-12-21 09:40:19 +00:00

dstepanov-yadro referenced this issue

2023-12-22 06:55:43 +00:00

Allow to seal writecache after flush #886

fyrchik referenced this issue from a commit

2023-12-29 14:33:15 +00:00

[#569] writecache: Allow to seal writecache after flush

fyrchik referenced this issue from a commit

2023-12-29 14:33:15 +00:00

[#569] writecache: Refactor flush

fyrchik referenced this issue from a commit

2023-12-29 14:33:15 +00:00

[#569] writecache: Do not wait modeMtx if mode changes

fyrchik referenced this issue from a commit

2023-12-29 14:33:15 +00:00

[#569] cli: Add `control shards writecache seal` command

dstepanov-yadro commented

2024-01-09 07:06:13 +00:00

Member

Added new flag seal for command frostfs-cli control shards flush-cache ... --seal that changes writecache mode to read-only after flush.
Fixed manual flush: objects from DB will be deleted, previously only fstree object deleted.
Fixed manual flush 2: manual flush doesn't conflict with background flush
Put and Delete methods now return error immediately, if writecache is changing mode, closing or flushing objects with manual invokation.
Added frostfs-cli control shards writecache seal that does almost the same as frostfs-cli control shards flush-cache --seal, but moves writecache to degraded read only mode.
frostfs-cli control shards flush-cache command marked as deprecated

- Added new flag seal for command frostfs-cli control shards flush-cache ... --seal that changes writecache mode to read-only after flush. - Fixed manual flush: objects from DB will be deleted, previously only fstree object deleted. - Fixed manual flush 2: manual flush doesn't conflict with background flush - Put and Delete methods now return error immediately, if writecache is changing mode, closing or flushing objects with manual invokation. - Added `frostfs-cli control shards writecache seal` that does almost the same as `frostfs-cli control shards flush-cache --seal`, but moves writecache to degraded read only mode. - `frostfs-cli control shards flush-cache` command marked as deprecated

dstepanov-yadro closed this issue

2024-01-09 07:06:18 +00:00