Bug 466803
Summary: | mdadm can't assemble partial arrays (rescue mode) | ||
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Product: | [Fedora] Fedora | Reporter: | Francois Cartegnie <bugzilla77> |
Component: | mdadm | Assignee: | Doug Ledford <dledford> |
Status: | CLOSED NEXTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
Severity: | low | Docs Contact: | |
Priority: | medium | ||
Version: | 9 | CC: | dledford |
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: | 2008-11-19 14:47:37 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: |
Description
Francois Cartegnie
2008-10-13 18:01:37 UTC
Can you clarify something for me. You say that you are building an array in step 1, and you are using the --build option. But the --build option does *not* create a persistent superblock, so once you reboot the machine in step 2, the array would no longer exist. If that's the case, then the problem in step 3 is not a bug. However, if you said --build but what you actually did was a --create, then the superblock would still exist and this would be a legitimate bug. Can you please clarify your situation? Sorry, that's effectively a "--create", an existing & working md config. This appears to be resolved with mdadm-2.6.7.1: [root@firewall ~]# mdadm -C /dev/md10 -l1 -n2 /dev/loop10 missing mdadm: array /dev/md10 started. [root@firewall ~]# cat /proc/mdstat Personalities : [raid6] [raid5] [raid4] [raid1] md10 : active raid1 loop10[0] 102336 blocks [2/1] [U_] md1 : active raid1 sdb1[2] sdd1[4] sda1[0] sdc1[1] 104376 blocks super 1.0 [4/4] [UUUU] bitmap: 0/7 pages [0KB], 8KB chunk md0 : active raid5 sda2[0] sdd2[4] sdb2[2] sdc2[1] 937390080 blocks super 1.1 level 5, 1024k chunk, algorithm 2 [4/4] [UUUU] bitmap: 13/298 pages [52KB], 512KB chunk unused devices: <none> [root@firewall ~]# mdadm -S /dev/md10 mdadm: stopped /dev/md10 [root@firewall ~]# mdadm -A /dev/md10 /dev/loop10 mdadm: /dev/md10 has been started with 1 drive (out of 2). [root@firewall ~]# cat /proc/mdstat Personalities : [raid6] [raid5] [raid4] [raid1] md10 : active raid1 loop10[0] 102336 blocks [2/1] [U_] md1 : active raid1 sdb1[2] sdd1[4] sda1[0] sdc1[1] 104376 blocks super 1.0 [4/4] [UUUU] bitmap: 0/7 pages [0KB], 8KB chunk md0 : active raid5 sda2[0] sdd2[4] sdb2[2] sdc2[1] 937390080 blocks super 1.1 level 5, 1024k chunk, algorithm 2 [4/4] [UUUU] bitmap: 5/298 pages [20KB], 512KB chunk unused devices: <none> [root@firewall ~]# (In reply to comment #3) > This appears to be resolved with mdadm-2.6.7.1: Can you confirm we're talking about the rescue image ? I don't have the ability to create rescue images, so no. I was just confirming that the mdadm build I'm working on will actually create an array without needing a UUID identifier (which was the root cause of the problem you had, that it was on a rescue image was moot, the problem is that the older mdadm would refuse to assemble an array if all you gave it was a name and a constituent device, and not any other identifier information and no information was present in mdadm.conf). Actual run testing of a rescue image will have to wait until after this mdadm build hits the dist-f10 tag and gets included in the next generated rescue cd image. mdadm-2.6.7.1-1.fc9 has been submitted as an update for Fedora 9. http://admin.fedoraproject.org/updates/mdadm-2.6.7.1-1.fc9 mdadm-2.6.7.1-1.fc9 has been pushed to the Fedora 9 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update mdadm'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F9/FEDORA-2008-9325 mdadm-2.6.7.1-1.fc9 has been pushed to the Fedora 9 stable repository. If problems still persist, please make note of it in this bug report. |