This is an upstream issue in kernel / handling nested block device (lvm on top of mdadm). It would be interesting to know if the patches to "recursively call merge_bvec_fn" became a reality nowadays. [1] It's best to ping linux-raid mailing list to query if anything changed with respect to this bug.
[1] http://lkml.indiana.edu/hypermail/linux/kernel/0704.1/1008.html ** Changed in: debian-installer (Ubuntu) Status: Confirmed => Invalid ** Changed in: ubiquity (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/320638 Title: hot-add/remove in mixed (IDE/SATA/USB/SD-card/...) RAIDs with device mapper on top => data corruption (bio too big device md0 (248 > 240)) To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/320638/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs