DragonFly bugs List (threaded) for 2009-10
Re: HAMMER: you can mount_hammer a UFS that was a hammer fs before
Bill Hacker schrieb:
Jan Lentfer wrote:
Actuall I tried the other way and it worked: You can write data on the
mount_hammer'd UFS with if=/dev/zero of=/mnt/ZEROS (which cares about
the fs), umount it and mount (UFS) it. Then you will not the the created
file with ls. unmount again, mount_hammer, ls and ... surprise ... data
will be there again. That is nice, isn't it.
If a partition contains a hammer fs and you newfs it to a UFS you can
afterwards still mount it as hammer fs.
You can even still run hammer info and write data on the partition
(tried with dd).
? 'dd' does not know or care anything about a fs.
What happens if you not only 'newfs' to UFS, but actually *write* to it
AS a r/w UFS mount? (e.g. - not with 'dd').
If hammer fs can 100% recover from that, there is witchcraft afoot....