Exposing slaves/holders is necessary in order to find out the real PCI device and its driver for the root filesystem when generating an initramfs with initramfs-tools. That fails right now for nvme multipath devices, which this patchset fixes.
However, because the slave devices are hidden, lsblk fails without some extra patches, as it can't find the device numbers for the slave devices, and exits. Christoph Hellwig (2): block: move holder tracking from struct block_device to hd_struct nvme: create slaves/holder entries for multipath devices Thadeu Lima de Souza Cascardo (2): nvme: Should not warn when a disk path is opened block: expose devt for GENHD_FL_HIDDEN disks block/genhd.c | 13 ++++++---- block/partition-generic.c | 4 +++ drivers/block/drbd/drbd_nl.c | 4 +-- drivers/md/bcache/super.c | 8 +++--- drivers/md/dm.c | 4 +-- drivers/md/md.c | 4 +-- drivers/nvme/host/core.c | 9 ++++--- drivers/nvme/host/multipath.c | 13 ++++++++-- drivers/nvme/host/nvme.h | 12 ++++++--- fs/block_dev.c | 48 +++++++++++++++-------------------- include/linux/fs.h | 11 +++----- include/linux/genhd.h | 4 +++ 12 files changed, 75 insertions(+), 59 deletions(-) -- 2.19.1
