| View previous topic :: View next topic |
| Author |
Message |
b52_
n00b
Joined: 14 Nov 2003
Posts: 51
Location: Germany
|
 Posted: Fri Nov 20, 2015 12:01 am Post subject: No pvscan results in working lvm on luks setup |
 |
|
Hi folks,
I am happy to be back to gentoo after all this time  I setup a gentoo with "lvm on luks" full disk encryption.
The system is able to bootload, decrypt, mount and boot up into a fully running state, but pvscan is not able to see/find my PV after bootup. These are the layers:
| Code: | sda2 -> /boot
sda3 -> luks -> lvm -> (/, swap) |
I compiled all needed modules into the kernel 4.1.12 and created a initramfs to interact ( luks passphrase, lvmscan, mount root)
| Code: | | genkernel --no-ramdisk-modules --lvm --luks --install initramfs |
And added these kernelparameters to grub.cfg
| Code: | linux /vmlinuz-4.1.12-gentoo root=/dev/mapper/idefix-root ro crypt_root=/dev/sda3 dolvm rootfstype=ext4 real_root=/dev/mapper/idefix-root resume=swap:/dev/mapper/idefix-swap
initrd /initramfs-genkernel-x86_64-4.1.12-gentoo |
The system boots fully up with all partitions mounted, but pvscan shows:
| Code: | | No matching physical volumes found |
The PV is still there, it is just not recognised
| Code: | # ls -al /dev/mapper/root
brw------- 1 root root 253, 0 19. Nov 23:10 /dev/mapper/root
# file -s /dev/mapper/root
/dev/mapper/root: LVM2 PV (Linux Logical Volume Manager), UUID: LAnlkb-TC6g-izXg-KS1g-nR4k-SaKw-5iUP9r, size: 499833135104 |
Thus after some research I started to play with filter and type in lvm.conf
| Code: | filter = [ "r|/dev/nbd.*|", "a|/dev/mapper/root|", "a/.*/" ]
types = [ "device-mapper", 253 ] |
| Code: | # grep device-mapper /proc/devices
253 device-mapper |
But no luck with this..
| Code: | idefix ~ # pvscan -vvvv
#lvmcmdline.c:1411 DEGRADED MODE. Incomplete RAID LVs will be processed.
#libdm-config.c:997 Setting activation/monitoring to 1
#lvmcmdline.c:1417 Processing: pvscan -vvvv
#lvmcmdline.c:1420 O_DIRECT will be used
#libdm-config.c:933 Setting global/locking_type to 1
#libdm-config.c:997 Setting global/wait_for_locks to 1
#locking/locking.c:128 File-based locking selected.
#libdm-config.c:997 Setting global/prioritise_write_locks to 1
#libdm-config.c:902 Setting global/locking_dir to /run/lock/lvm
#misc/lvm-flock.c:200 Locking /run/lock/lvm/P_global WB
#misc/lvm-flock.c:101 _do_flock /run/lock/lvm/P_global:aux WB
#misc/lvm-flock.c:101 _do_flock /run/lock/lvm/P_global WB
#misc/lvm-flock.c:48 _undo_flock /run/lock/lvm/P_global:aux
#filters/filter-persistent.c:51 Wiping cache of LVM-capable devices
#device/dev-cache.c:338 /dev/sda: Added to device cache
#device/dev-cache.c:335 /dev/disk/by-id/ata-ST500LM000-SSHD-8GB_W7653B8W: Aliased to /dev/sda in device cache
#device/dev-cache.c:335 /dev/disk/by-id/wwn-0x5000c5008a5bbdfc: Aliased to /dev/sda in device cache
#device/dev-cache.c:338 /dev/sda1: Added to device cache
#device/dev-cache.c:335 /dev/disk/by-id/ata-ST500LM000-SSHD-8GB_W7653B8W-part1: Aliased to /dev/sda1 in device cache
#device/dev-cache.c:335 /dev/disk/by-id/wwn-0x5000c5008a5bbdfc-part1: Aliased to /dev/sda1 in device cache
#device/dev-cache.c:335 /dev/disk/by-partlabel/grub: Aliased to /dev/sda1 in device cache
#device/dev-cache.c:335 /dev/disk/by-partuuid/b6cb856e-baff-4d84-bd21-e395a15f01a1: Aliased to /dev/sda1 in device cache
#device/dev-cache.c:338 /dev/sda2: Added to device cache
#device/dev-cache.c:335 /dev/disk/by-id/ata-ST500LM000-SSHD-8GB_W7653B8W-part2: Aliased to /dev/sda2 in device cache
#device/dev-cache.c:335 /dev/disk/by-id/wwn-0x5000c5008a5bbdfc-part2: Aliased to /dev/sda2 in device cache
#device/dev-cache.c:335 /dev/disk/by-partlabel/boot: Aliased to /dev/sda2 in device cache
#device/dev-cache.c:335 /dev/disk/by-partuuid/24ef536d-a0df-425c-a8fb-20a3305429ac: Aliased to /dev/sda2 in device cache
#device/dev-cache.c:335 /dev/disk/by-uuid/422ce14c-057b-48e8-8855-a7fb04ef3fc2: Aliased to /dev/sda2 in device cache
#device/dev-cache.c:338 /dev/sda3: Added to device cache
#device/dev-cache.c:335 /dev/disk/by-id/ata-ST500LM000-SSHD-8GB_W7653B8W-part3: Aliased to /dev/sda3 in device cache
#device/dev-cache.c:335 /dev/disk/by-id/wwn-0x5000c5008a5bbdfc-part3: Aliased to /dev/sda3 in device cache
#device/dev-cache.c:335 /dev/disk/by-partlabel/crypted: Aliased to /dev/sda3 in device cache
#device/dev-cache.c:335 /dev/disk/by-partuuid/9d9df5bd-8dc1-40f7-be8e-cfdd6429973b: Aliased to /dev/sda3 in device cache
#device/dev-cache.c:335 /dev/disk/by-uuid/79554a33-35e8-41ca-bfe9-379858065155: Aliased to /dev/sda3 in device cache
#device/dev-cache.c:338 /dev/loop0: Added to device cache
#device/dev-cache.c:338 /dev/loop1: Added to device cache
#device/dev-cache.c:338 /dev/loop2: Added to device cache
#device/dev-cache.c:338 /dev/loop3: Added to device cache
#device/dev-cache.c:338 /dev/loop4: Added to device cache
#device/dev-cache.c:338 /dev/loop5: Added to device cache
#device/dev-cache.c:338 /dev/loop6: Added to device cache
#device/dev-cache.c:338 /dev/loop7: Added to device cache
#device/dev-cache.c:338 /dev/ram0: Added to device cache
#device/dev-cache.c:338 /dev/ram1: Added to device cache
#device/dev-cache.c:338 /dev/ram10: Added to device cache
#device/dev-cache.c:338 /dev/ram11: Added to device cache
#device/dev-cache.c:338 /dev/ram12: Added to device cache
#device/dev-cache.c:338 /dev/ram13: Added to device cache
#device/dev-cache.c:338 /dev/ram14: Added to device cache
#device/dev-cache.c:338 /dev/ram15: Added to device cache
#device/dev-cache.c:338 /dev/ram2: Added to device cache
#device/dev-cache.c:338 /dev/ram3: Added to device cache
#device/dev-cache.c:338 /dev/ram4: Added to device cache
#device/dev-cache.c:338 /dev/ram5: Added to device cache
#device/dev-cache.c:338 /dev/ram6: Added to device cache
#device/dev-cache.c:338 /dev/ram7: Added to device cache
#device/dev-cache.c:338 /dev/ram8: Added to device cache
#device/dev-cache.c:338 /dev/ram9: Added to device cache
#device/dev-cache.c:606 /dev/dm-0: stat failed: No such file or directory
#device/dev-cache.c:338 /dev/dm-1: Added to device cache
#device/dev-cache.c:335 /dev/root: Aliased to /dev/dm-1 in device cache (preferred name)
#device/dev-cache.c:338 /dev/dm-2: Added to device cache
#device/dev-cache.c:338 /dev/dm-3: Added to device cache
#device/dev-cache.c:338 /dev/dm-4: Added to device cache
#device/dev-cache.c:338 /dev/dm-5: Added to device cache
#device/dev-cache.c:338 /dev/dm-6: Added to device cache
#device/dev-cache.c:574 /dev: Failed to insert devices from udev-managed directory to device cache fully
#cache/lvmcache.c:1661 Wiping internal VG cache
#cache/lvmcache.c:450 Metadata cache has no info for vgname: "#orphans_pool"
#cache/lvmcache.c:450 Metadata cache has no info for vgname: "#orphans_pool"
#cache/lvmcache.c:1366 lvmcache: initialised VG #orphans_pool
#cache/lvmcache.c:450 Metadata cache has no info for vgname: "#orphans_lvm2"
#cache/lvmcache.c:450 Metadata cache has no info for vgname: "#orphans_lvm2"
#cache/lvmcache.c:1366 lvmcache: initialised VG #orphans_lvm2
#cache/lvmetad.c:653 Asking lvmetad for complete list of known VGs
#libdm-config.c:902 Setting response to OK
#libdm-config.c:902 Setting response to OK
#pvscan.c:380 Walking through all physical volumes
#cache/lvmetad.c:626 Asking lvmetad for complete list of known PVs
#libdm-config.c:902 Setting response to OK
#libdm-config.c:902 Setting response to OK
#pvscan.c:438 No matching physical volumes found
#misc/lvm-flock.c:71 Unlocking /run/lock/lvm/P_global
#misc/lvm-flock.c:48 _undo_flock /run/lock/lvm/P_global
#lvmcmdline.c:1478 Completed: pvscan -vvvv |
Any Ideas how to get pvscan to recognise /dev/mapper/root? I guess this device is created by initramfs. Maybe it has something todo with the dm-0 stat error above..
Thank you,
b52
_________________
May the source be with you! |
|
| Back to top |
|
 |
b52_
n00b
Joined: 14 Nov 2003
Posts: 51
Location: Germany
|
| Posted: Fri Nov 20, 2015 11:00 pm Post subject: |
|
|
Interesting, after I compiled "AHCI SATA" as a module and created a new initramfs with genkernel my lvm volume is recognised again  All other kernel options I need to boot this luks+lvm system are still compiled into the kernel.. pvdisplay and vgdisplay work again.
BTW: I use genkernel only for the initramfs, the kernel is build manually.
In order to prove I reverted it. I compiled AHCI into the kernel, build the initramfs without modules and pvdisplay didn't show up anything?! Looks like bug.
Any idea how to debug this?
Thanks,
b52
_________________
May the source be with you! |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
|
Networking & Security
