I'm trying to create a multi-device filesystem on top of regular files (not actual disks), and mount that to a loopback device. For a filesystem created on a single file, it works fine, but for a filesystem across multiple files, it doesn't. dd if=/dev/zero of=img1 bs=4096 count=65536 dd if=/dev/zero of=img2 bs=4096 count=65536 dd if=/dev/zero of=img3 bs=4096 count=65536 dd if=/dev/zero of=img4 bs=4096 count=65536 mkfs.btrfs img1 mount -o loop -t btrfs img1 /mnt/test # works mkfs.btrfs img1 img2 img3 img4 mount -o loop -t btrfs img1 /mnt/test # fails When I try to mount with multiple files, it also prints a message to syslog: Jun 15 00:32:10 3vil device fsid a147d6b950f66dca-3e2e7f52011c93b0 devid 4 transid 9 /dev/loop/0 Jun 15 00:32:10 3vil btrfs: failed to read chunk tree on loop0 Jun 15 00:32:10 3vil btrfs: open_ctree failed Am I doing something wrong, or is this use case broken right now? --Ravi -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
