Bug 822082
Summary: | Update lvm2 support for new thin-provisioning interface for 3.4 linux kernel | ||
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Product: | [Fedora] Fedora | Reporter: | Zdenek Kabelac <zkabelac> |
Component: | lvm2 | Assignee: | Zdenek Kabelac <zkabelac> |
Status: | CLOSED RAWHIDE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
Severity: | unspecified | Docs Contact: | |
Priority: | unspecified | ||
Version: | rawhide | CC: | agk, bmarzins, bmr, dwysocha, heinzm, jonathan, lvm-team, msnitzer, prajnoha, prockai, xiaoli, zkabelac |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | Unspecified | ||
OS: | Unspecified | ||
Whiteboard: | |||
Fixed In Version: | lvm2-2.02.98-1.fc19 | Doc Type: | Bug Fix |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2012-10-16 10:37:35 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Zdenek Kabelac
2012-05-16 09:55:20 UTC
We have now proposal patch: https://www.redhat.com/archives/dm-devel/2012-May/msg00161.html Which would make things backward compatible. But still we need to decide, what level of support lvm should provide here. 1. We could recalculate discard support for data device each time we manipulate with tables - and provide a proper option to the target constructor. Since I'm unsure in which moment of the tree activation we are able to query device for discard support it may require to activate data device before thin-pool device in separate udev transaction and obtain information about discard support on this device. 2. We could ignore it - user will get error message in system log - but since there is low chance many user will be changing their discs with discard support. In my case - I get to these problem since I use tmpfs as backend filesystem. Once this patch: http://www.spinics.net/lists/linux-fsdevel/msg55155.html goes upstream, it will eliminate use-case of discardless discs on my box. But in this case if some device in the stack has really flipped its discard support condition, user will need to reactivate device to get the change propagate. Upstreamed with some more following commits: https://www.redhat.com/archives/lvm-devel/2012-August/msg00028.html The fix is included in lvm2-2.02.98-1.fc19. |