** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1759893
Title:
[18.04][config] regression: nvme and nvme_core couldn't be built as
modules starting 4.15-rc2
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Bionic:
Fix Committed
Bug description:
Some regression was introduced into NVME-related kernel configuration
by 32c662c58a9b9 into 4.15-rc2, which was pulled later into ubuntu-
bionic.git
In result, "nvme" and "nvme_core" drivers are built into the kernel,
we can't build them as modules. It caused incompatibility of NMVe-OF
target and initiator modules (nvmet, nvme-rdma) installed by Mellanox
OFED with the inbox "nvme" driver.
Root cause analysis.
In the drivers/lightnvm/Kconfig file - kernel configuration for the
OpenChannel SSDs (lightnvm) we have:
menuconfig NVM
bool "Open-Channel SSD target support"
depends on BLOCK && HAS_DMA && PCI
select BLK_DEV_NVME
help
Say Y here to get to enable Open-channel SSDs.
...
It means that BLK_DEV_NVME is selected to "y" when NVM (CONFIG_NVM) is
selected.
NVM parameter is 2 state (on / off, i.e. "y" or "no"), it couldn't be built
as a module.
So that it triggers the change of BLK_DEV_NAME=y and NVME_CORE=y
$ git blame drivers/lightnvm/Kconfig
32c662c58a9b9 (Rakesh Pandit 2017-10-13 14:45:55 +0200 7) depends on
BLOCK && HAS_DMA && PCI
32c662c58a9b9 (Rakesh Pandit 2017-10-13 14:45:55 +0200 8) select
BLK_DEV_NVME
commit 32c662c58a9b9d0c99e713a14ca323a9a91c73a0
Author: Rakesh Pandit <rak...@tuxera.com>
Date: Fri Oct 13 14:45:55 2017 +0200
lightnvm: include NVM Express driver if OCSSD is selected for
build
Because NVM needs BLK_DEV_NVME, select it automatically if we mark NVM
in config file before building kernel. Also append PCI to depends as
select doesn't automatically add dependencies.
Signed-off-by: Rakesh Pandit <rak...@tuxera.com>
Signed-off-by: Matias Bjørling <m...@bjorling.me>
Signed-off-by: Jens Axboe <ax...@kernel.dk>
drivers/lightnvm/Kconfig | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
$ git diff 32c662c58a9b9^1..32c662c58a9b9
diff --git a/drivers/lightnvm/Kconfig b/drivers/lightnvm/Kconfig
index ead61a93cb4e..2a953efec4e1 100644
--- a/drivers/lightnvm/Kconfig
+++ b/drivers/lightnvm/Kconfig
@@ -4,7 +4,8 @@
menuconfig NVM
bool "Open-Channel SSD target support"
- depends on BLOCK && HAS_DMA
+ depends on BLOCK && HAS_DMA && PCI
+ select BLK_DEV_NVME
help
Say Y here to get to enable Open-channel SSDs.
Proposed fix is following:
diff --git a/drivers/lightnvm/Kconfig b/drivers/lightnvm/Kconfig
index 2a953efec4e1..9969236314d7 100644
--- a/drivers/lightnvm/Kconfig
+++ b/drivers/lightnvm/Kconfig
@@ -4,8 +4,7 @@
menuconfig NVM
bool "Open-Channel SSD target support"
- depends on BLOCK && HAS_DMA && PCI
- select BLK_DEV_NVME
+ depends on BLOCK && HAS_DMA && PCI && BLK_DEV_NVME
help
Say Y here to get to enable Open-channel SSDs.
Regards, Yurii Shestakov
---
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Mar 29 17:05 seq
crw-rw---- 1 root audio 116, 33 Mar 29 17:05 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.9-0ubuntu1
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord':
'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=/dev/mapper/vg2-swap_1
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: QEMU Standard PC (Q35 + ICH9, 2009)
Package: linux (not installed)
PciMultimedia:
ProcFB:
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-10-generic
root=/dev/mapper/vg2-root ro net.ifnames=0 biosdevname=0 quiet nofb nomodeset
console=ttyS0,115200n8
ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3
RelatedPackageVersions:
linux-restricted-modules-4.15.0-10-generic N/A
linux-backports-modules-4.15.0-10-generic N/A
linux-firmware 1.173
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
Tags: bionic
Uname: Linux 4.15.0-10-generic x86_64
UnreportableReason: The report belongs to a package that is not installed.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: False
dmi.bios.date: 01/01/2011
dmi.bios.vendor: Seabios
dmi.bios.version: 0.5.1
dmi.chassis.type: 1
dmi.chassis.vendor: Bochs
dmi.modalias:
dmi:bvnSeabios:bvr0.5.1:bd01/01/2011:svnQEMU:pnStandardPC(Q35+ICH9,2009):pvrpc-q35-2.0:cvnBochs:ct1:cvr:
dmi.product.name: Standard PC (Q35 + ICH9, 2009)
dmi.product.version: pc-q35-2.0
dmi.sys.vendor: QEMU
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