On 05/15/2014 04:40 PM, Chris Murphy wrote: > Summary: Two device btrfs raid1, as data device not boot/rootfs, mounted and > filled with some data. Power off and remove one device. Reboot and mount the > single device available with -o degraded. Create new subvolume and fill with > some data. Poweroff and reattach previously removed device. Reboot and > attempt to mount volume normally and I get a segfault. > > Setup: > VBox VM, Fedora Rawhide > 2x 2TB VDIs > kernel 3.15.0-0.rc5.git0.1.fc21.x86_64 > btrfs-progs 3.14-1 > mkfs.btrfs -d raid1 -m raid1 /dev/sd[bc] > > Reproduce steps: > 1. Mount /dev/sdb /mnt > 2. btrfs sub create /mnt/subv1 > 3. cp -a /var /mnt/prefill/ > 4. poweroff, remove /dev/sdc > 5. Boot, mount /dev/sdb /mnt -o degraded > 6. btrfs sub create /mnt/subv2 > 7. cp -a /boot /mnt/sub2/ > 8. poweroff, reattach /dev/sdc > 9. Boot, mount /dev/sdb /mnt > Segmentation fault > > Regression: I know I've done this recently with existing subvolumes (without > making new ones while mounting degraded) and it worked OK so I'm not sure how > reproducible it is. >
Yes, this used to work. I'll reproduce, things for sending it! -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
