On 06/07/2010 03:29 PM, minskey guo wrote:
On 06/07/2010 05:12 PM, J. David Beutel wrote:
I created an md raid1 on partitions that had a btrfs raid1, but btrfs is
still recognized on one of those partitions. (Is it finding some
left-over, redundant metadata?) I'm concerned this will confuse me or
btrfs in the future. How should I fix this?
Seem that btrfs-show checks the 1st superblock only, running the
following can zap some part of that superblock,
dd if=/dev/zero of=/dev/sda7 seek=128 bs=512 count=1
but probably, you need to zap the 2nd superblock as
dd if=/dev/zero of=/dev/sda7 seek=128k bs=512 count=1
In case the block is being used, you can dump that block and
search "_BHRfS_M" in that block before clear it.
Thanks! Both of those blocks had "_BHRfS_M". Zapping them stopped sda7
from showing up in btrfs-show, while /proc/mdstat is unchanged and /
still works.
Cheers,
11011011
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