Bug 830738
| Summary: | Chunk size migration from 128k to 4k doesn't finish correctly | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Lukasz Dorau <lukasz.dorau> |
| Component: | mdadm | Assignee: | Jes Sorensen <Jes.Sorensen> |
| Status: | CLOSED NEXTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 17 | CC: | agk, dledford, Jes.Sorensen, maciej.patelczyk |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2012-06-12 16:13:57 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: | |||
The defect is fixed by patch in Neil's repo: http://neil.brown.name/git?p=mdadm;a=commit;h=e1742195ff3dba97929f81af6b7633481a23397a This is already addressed by the mdadm-3.2.5 update in updates-testing. Please test and report feedback in koji. |
Description of problem: Chunk size migration from 128k to 4k doesn't finish correctly. After this migration should be RAID0 with 4k chunk size, but there is RAID4 with 4k chunk size in degraded state. Version-Release number of selected component (if applicable): mdadm-3.2.3-6.fc17.x86_64 How reproducible: Always Steps to reproduce: # mdadm -Ss # mdadm --zero-superblock /dev/sd[a-b] # mdadm -C /dev/md/imsm0 -amd -e imsm -n 2 /dev/sda /dev/sdb -R # mdadm -C /dev/md/vol0 -amd -l0 --chunk 128 --size 524288 -n 2 /dev/sda /dev/sdb -R # export MDADM_EXPERIMENTAL=1 # mdadm -G /dev/md/vol0 --chunk 4 Actual results: There is RAID4 with 4k chunk size in degraded state. # cat /proc/mdstat Personalities : [raid0] [raid6] [raid5] [raid4] md126 : active raid4 sdb[1] sda[0] 1048576 blocks super external:/md127/0 level 4, 4k chunk, algorithm 0 [3/2] [UU_] md127 : inactive sdb[1](S) sda[0](S) 2210 blocks super external:imsm unused devices: <none> Expected results: After chunk size migration should be RAID0 with 4k chunk size.