Feature #2718
closedlibrbd: map parent -> child in a per-pool rbd_children object when cloning
Updated by Sage Weil almost 12 years ago
- Target version set to v0.50
- Translation missing: en.field_position set to 1324
Updated by Sage Weil almost 12 years ago
- Translation missing: en.field_story_points set to 1
- Translation missing: en.field_position deleted (
1324) - Translation missing: en.field_position set to 1324
Updated by Sage Weil almost 12 years ago
- Target version deleted (
v0.50) - Translation missing: en.field_position deleted (
1323) - Translation missing: en.field_position set to 2
Updated by Sage Weil almost 12 years ago
- Translation missing: en.field_position deleted (
7) - Translation missing: en.field_position set to 4
Updated by Anonymous almost 12 years ago
- Translation missing: en.field_position deleted (
9) - Translation missing: en.field_position set to 7
Updated by Anonymous almost 12 years ago
- Translation missing: en.field_position deleted (
7) - Translation missing: en.field_position set to 2
Updated by Dan Mick almost 12 years ago
From the design doc:
In addition to knowing which parent a given image has, we want to be able to tell if a protected snapshot still has children. This is accomplished with a new per-pool object, rbd_children, which maps (parent pool id, parent image id, parent snapshot id) to a list of child image ids. This is stored in the same pool as the child image because the client creating a clone already has read/write access to everything in this pool, but may not have write access to the parent’s pool. This lets a client with read-only access to one pool clone a snapshot from that pool into a pool they have full access to. It increases the cost of unprotecting an image, since this needs to check for children in every pool, but this is a rare operation. It would likely only be done before removing old images, which is already much more expensive because it involves deleting every data object in the image.
Updated by Anonymous over 11 years ago
- Target version set to v0.51
- Translation missing: en.field_position deleted (
10) - Translation missing: en.field_position set to 9
Updated by Josh Durgin over 11 years ago
- Status changed from 12 to Fix Under Review
Updated by Sage Weil over 11 years ago
- Status changed from Fix Under Review to Resolved
- Translation missing: en.field_position deleted (
21) - Translation missing: en.field_position set to 21