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Sargastic
n00b
Joined: 28 Aug 2011
Posts: 57
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 Posted: Sat Dec 27, 2014 2:48 pm Post subject: [SOLVED] Luks root disk, LVM partitions and vgextend |
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Hi,
I recently installed a new Gentoo box. I'm using what seems to be a quite usual configuration : disk is split into 4 partitions (bios, boot, swap and rootfs). RootFS is luks/dm-crypt'ed, and I'm using LVM on it. The dm-crypted partition "is" an LVM PV, holds one volume group (namge 'vg') which contains two logical volumes ('vg-root' and 'vg-home').
The initramfs, made through genkernel, seems okay - or at least good enough to let everything boot.
So I've got a running system.
The boot disk is a small SSD one. I want to increase storage by adding another disk. Since I'm already using dm-crypt and lvm, it would be a shame not to go on with those tools. I luksFormat-ed the new disk, made it into an LVM physical volume... and now I'm stuck. I want to extend the original volume group (which contains the vg-root and vg-home logical volumes), and then extend the vg-home logical volume.
But LVM cannot find the "original" physical volume nor volume group ('second' is the PV created on the new disk I plan to use to extend everything) :
| Code: |
# pvscan
WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!
PV /dev/mapper/second lvm2 [931.51 GiB]
Total: 1 [931.51 GiB] / in use: 0 [0 ] / in no VG: 1 [931.51 GiB]
# vgscan
WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!
Reading all physical volumes. This may take a while...
No volume groups found
# ls /dev/vg
home root
# ls /dev/mapper/
control root second vg-home vg-root
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I guess I may have done something wrong somewhere :oops: but I'm quite at a loss on what and where.
Any help or ideas ?
Tia.
Last edited by Sargastic on Mon Feb 16, 2015 8:27 pm; edited 1 time in total |
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brendlefly62
Tux's lil' helper
Joined: 19 Dec 2009
Posts: 133
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| Posted: Mon Feb 16, 2015 6:57 pm Post subject: |
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Did you ever get any help with this? I have similar symptoms:
No volume groups found:
| Code: | Oromis joe # lvs
WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!
No volume groups found |
But it's a running system with 2 vg and each lv in use...
| Code: | Oromis joe # df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vge2-root 2.0G 808M 1.1G 44% /
/dev/mapper/vge2-usr 43G 28G 13G 69% /usr
tmpfs 200M 592K 200M 1% /run
dev 10M 0 10M 0% /dev
shm 998M 276K 998M 1% /dev/shm
/dev/mapper/vge2-var 20G 4.1G 15G 22% /var
/dev/mapper/vge2-tmp 9.8G 23M 9.2G 1% /tmp
/dev/mapper/vge2-opt 1.5G 508M 881M 37% /opt
/dev/mapper/vge2-home 68G 51G 15G 78% /home
/dev/mapper/vge2-srv 295G 239G 42G 86% /srv
/dev/mapper/vg_slim2-vm_store 788G 281G 468G 38% /home/joe/vm_store |
I boot with a custom initramfs that uses busybox, cryptsetup, and lvm2 ... my custom init unlocks each encrypted block device and uses vgscan ... vchange -ay to make the lvs available. Seems to be they are available during that part of the boot, but evidently after I switchroot and continue with stock /sbin/init on openrc, they are not available. This is despite the fact that the related services are started in the sysinit runlevel:
| Code: | Oromis joe # rc-status sysinit
Runlevel: sysinit
lvmetad [ started ]
sysfs [ started ]
dmcrypt [ started ]
devfs [ started ]
dmesg [ started ]
kmod-static-nodes [ started ]
tmpfiles.dev [ started ]
udev [ started ]
lvm [ started ]
device-mapper [ started ] |
This particular machine is running a x86_64 gentoo-sources kernel:
| Code: | Oromis joe # uname -a
Linux Oromis 3.17.8-gentoo-r1 #3 Wed Feb 11 23:47:44 EST 2015 x86_64 AMD Athlon(tm) 64 Processor 3200+ AuthenticAMD GNU/Linux |
I have several other systems that do not have the same problem. I suspect that I've made some silly error in kernel configuration, and I've tried to compare this "bad" one to my other "good" ones, but I haven't found the culprit yet.
Please let me know if you got (or get) it figured out. |
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Sargastic
n00b
Joined: 28 Aug 2011
Posts: 57
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| Posted: Mon Feb 16, 2015 8:26 pm Post subject: |
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Hello,
| brendlefly62 wrote: | | Did you ever get any help with this? I have similar symptoms: |
No help, but found a way out nonetheless. Silly me, I did not write it here.
| brendlefly62 wrote: | No volume groups found:
| Code: | Oromis joe # lvs
WARNING: lvmetad is running but disabled. Restart lvmetad before enabling it!
No volume groups found |
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I just activated lvmetad. In lvm.conf,
That was all that my box needed to be happy. I hope it will be as easy for you. |
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Installing Gentoo
