partitioner not intelligent with filing system config on top of RAID
Bug #357023 reported by
Jack Wasey
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| ubiquity (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
Bug Description
If any RAID level is configured, there are some simple and important optimisations which should be done when a file system is created on them. If LVM is used in between, this also needs additional settings.
I am personally not clear on the details - I was out of my depth when reading about all this - but informing the overlying layers of the RAID stripe size seemed crucial. My performance of out-of-the-box ext4 on LVM on 4 disk RAID10 was miserable, and about 25% of what I should have been getting. Partly this was due to blockdev readahead (another bug report).
The partitioner should automatically set the chunk/stripe/
| affects: | ubuntu → ubiquity (Ubuntu) |
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