Hi, I setup 2 Linux servers to share the same device through iSCSI. Then I created a btrfs on the device. Then I saw the problem that the 2 Linux servers do not see a consistent file system image.
Details: -- Server 1 running kernel 2.6.32, server 2 running 3.2.1 -- Both running btrfs v0.20-rc1 -- Server 2 has device /dev/vdc, exposed as iSCSI target -- Server 1 mounts the device as /dev/sda -- Server 1 'mount /dev/sda /mnt/btrfs'; server 2 'mount /dev/vdc /mnt/btrfs', -- When server 1 'touch /mnt/btrfs/foo', server 2 doesn't see any file under /mnt/btrfs -- I created /mnt/btrfs/foo on server 2 as well; then I added some content from both server 1 and server 2 to /mnt/btrfs/foo -- After that each server sees the content it adds, but not the content from the other server -- Both server 'umount /mnt/btrfs', and mount it again -- Then both servers see /mnt/btrfs/foo with the content added from server 2 (I guess it's because server 2 created the foo file later than server 1). I did a similar test on ext4 and both servers see a consistent image of the file system. When server 1 creates a foo file server 2 immediately sees it. Is this how btrfs is supposed to work? Thanks, Zhe -- 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
