On 03/28/2015 06:11 AM, Roman Mamedov wrote: > On Fri, 27 Mar 2015 21:59:38 -0400 > Phil Turmel <philip@xxxxxxxxxx> wrote: > >> I read through this. Given all of the destructive actions you took, I >> am doubtful you will ever get your data. Like mounting "readonly". >> That gives you a readonly filesystem, but it writes to the device. >> Possibly a great deal if there's a journal to replay. > > Are you sure, which FS does that? I remember some discussion on FS lists > (Btrfs?), and IIRC the consensus and the implemented behavior was that the > device shouldn't ever be touched with writes on RO mounts, no matter what. I remember people being burned by it with ext3/4 a couple years ago. Which is why all of the array disaster recoveries I've helped with called for fsck -n to verify a reconstruction attempt, not a mount -o ro. I will set up a small VM and see what recent kernels do. Phil -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
