Bug 976499
Summary: | why did the snapshot rounding logic change? | ||
---|---|---|---|
Product: | Red Hat Enterprise Linux 7 | Reporter: | Corey Marthaler <cmarthal> |
Component: | lvm2 | Assignee: | LVM and device-mapper development team <lvm-team> |
lvm2 sub component: | Default / Unclassified | QA Contact: | cluster-qe <cluster-qe> |
Status: | CLOSED NOTABUG | Docs Contact: | |
Severity: | medium | ||
Priority: | medium | CC: | agk, heinzm, jbrassow, mcsontos, msnitzer, prajnoha, prockai, thornber, zkabelac |
Version: | 7.0 | Keywords: | Triaged |
Target Milestone: | rc | ||
Target Release: | --- | ||
Hardware: | x86_64 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2013-06-21 16:12:50 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
Corey Marthaler
2013-06-20 16:57:20 UTC
It does not make much sense creating snapshot device which is much larger than the origin (maybe except when snapshot is RW and is lvextended later.) Yes - snapshot now calculates maximum usable size of COW device and will avoid wasting disk space to be allocated for unusable part of COW device. Basically it's fulfilling RFE from bug 916746. So it also handles automatic resize and should avoid wasting disk space when snapshot reaches 100% usage and covers whole origin. Sounds good. I'll close this bug and change the test cases accordingly. Thanks. |