Re: [CentOS] C7 and mdadm -( not solved)

2019-01-23 Thread Ulf Volmer
On 23.01.19 21:26, mark wrote: > Does anyone know if the actual physical position in the hot-swap bays > affects how mdadm tries to assemble a drive? mdadm --assemble scans alls drives for the superblock. Drives are known by device uuids. The physical position does not matter. Best regards Ulf _

Re: [CentOS] C7 and mdadm -( not solved)

2019-01-23 Thread mark
Does anyone know if the actual physical position in the hot-swap bays affects how mdadm tries to assemble a drive? mark ___ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] C7 and mdadm - apparently SOLVED (well, not)

2019-01-23 Thread mark
mark wrote: > Looking around on the Web, what I just tried was to stop the RAID, then > do an --assemble --scan, and *that* found everything, put the raid > together, and appears to be rebuilding using the new drive. > > *phew* > > > I do find it interesting that scan works, but explicitly assembli

Re: [CentOS] C7 and mdadm - apparently SOLVED

2019-01-23 Thread mark
Looking around on the Web, what I just tried was to stop the RAID, then do an --assemble --scan, and *that* found everything, put the raid together, and appears to be rebuilding using the new drive. *phew* I do find it interesting that scan works, but explicitly assembling apparently remembers th

Re: [CentOS] C7 and mdadm

2019-01-22 Thread Gordon Messmer
On 1/22/19 2:26 PM, mark wrote: A user's system had a hard drive failure over the weekend. Linux RAID 6... But: it's now Personalities : [raid6] [raid5] [raid4] md0 : active (auto-read-only) raid5 sdg1[8](S) sdh1[7] sdf1[4] sde1[3] sdd1[2] sdc1[1] 23441313792 blocks super 1.2 level 5, 512

Re: [CentOS] C7 and mdadm

2019-01-22 Thread Alexander Dalloz
Am 22.01.2019 um 23:26 schrieb mark: md0 : active (auto-read-only) raid5 sdg1[8](S) sdh1[7] sdf1[4] sde1[3] sdd1[2] sdc1[1] [ ... ] [__U] I see a RAID 5 with 2 elements missing from the array. That would mean data is lost. Alexander ___ Cent

[CentOS] C7 and mdadm

2019-01-22 Thread mark
A user's system had a hard drive failure over the weekend. Linux RAID 6. I identified the drive, brought the system down (8 drives, and I didn't know the s/n of the bad one. why it was there in the box, rather than where I started looking...) Brought it up, RAID not working. I finally found that I