Hi. I have tested this patchset in Virtual Machine.
Environment:
Oracle VirtualBox 4.3.10 + Ubuntu 14.10 server + LVM 2.02.98
Kernel:
4.1.0-rc7 (12 June, 2015 / Today) with your 4 patches.
Btrfs-progs: 4.0
Generic Test Procedure:
mkfs.btrfs -f -m $RAID -d $RAID && mount
cp some data
lvremove a logical volume
mount -o degraded
btrfs replace with a new device
btrfs scrub /mnt
without patches, raid 1, raid 10 are both OK, raid 5/6 cause NULL
pointer dereference
and when shudown -h , get BTRFS info：
suspending dev_replace for umount
with the patches, raid 1/10/5/6 are all okey.
在 2015年06月11日 14:08, Omar Sandoval 写道:
On Thu, Jun 11, 2015 at 11:52:30AM +0800, Zhao Lei wrote:
Hi, Omar Sandoval
I tested this patchset with my script, but see general protection fault
again.
NODE: kvm with virtio disk
ROOTFS: RHEL6 with btrfs-progs v4.0
KERNEL: v4.1-rc6 with 4 patchs in this patchset
Maybe my test have small different with yours,
but it seems is similar bug, could you check it?
Hi, Zhao Lei,
Thanks for taking a look! I was able to reproduce this and it looks like
a similar bug, this time coming from the parity scrubbing code instead
of the data scrubbing code. I didn't test scrubbing a degraded
filesystem, only replacing a missing device, so that's probably why I
didn't run into it. I'll take a closer look.
Thanks,
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