can not format new partition [old superblocks]
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| gparted (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
| mdadm (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Bug Description
Binary package hint: mdadm
For some reason, gparted fails to format a new partition where I used to have an old, deleted RAID set. To reproduce (maybe):
1. Create raid1 set with mdadm (/dev/sdd1 and /dev/sde1)
2. Delete partition (/dev/sdd1)
3. Reboot (just to make sure /dev/sdd1 should be gone everywhere)
4. Try to create a new ext3 formatted partition using gparted
Expected: Create and format succeeds
Actual: mkfs fails with: "/dev/sdd1 is apparently in use by the system: will not make a file system here" that was just created?!
I'm not sure where the real problem is, if it's in mkfs, gparted, mdadm, the kernel, but somewhere it's keeping traces of sdd1 which prevents me from using the disk. mdadm says the raid set is not active so it won't let met do anything with it there, gparted refuses to work so I'm stuck.
mdadm:
Installed: 2.6.3+200709292
| Kjella (kjella79) wrote | #1 |
| summary: |
- Old raid array blocks format of new partition + old superblocks can prevent formating a new partition |
| Changed in mdadm (Ubuntu): | |
| status: | New → Confirmed |
| summary: |
- old superblocks can prevent formating a new partition + old raid superblocks can prevent formating a new partition |
| summary: |
- old raid superblocks can prevent formating a new partition + can not format new partition [old superblocks] |
| Phillip Susi (psusi) wrote | #3 |
| Changed in mdadm (Ubuntu): | |
| status: | Confirmed → Invalid |
| Changed in gparted (Ubuntu): | |
| status: | New → Invalid |
With mdadm --zero-superblock you can remove md info from the partition (prior to deleting the partition table entry)
Otherwise dd zeros to the partition or try to use the --force mkfs/gparted.