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madurani
n00b
Joined: 08 Mar 2017
Posts: 57
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 Posted: Thu Nov 28, 2024 8:25 am Post subject: Genkernel - LVM issue |
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Hello All, When i wonted to extend /usr lvm volume so i found out that is incorrect mounted. Volume is lvm, but mounted is as dm-8. Same is for root /:
| Code: |
pc-marek1 /etc # df -h | grep dm-5
/dev/dm-5 15G 41M 14G 1% /
pc-marek1 /etc # df -h | grep usr
/dev/dm-8 20G 15G 3.6G 81% /usr
/dev/mapper/system-portage 15G 1.9G 13G 14% /usr/portage
/dev/mapper/system-src 20G 13G 5.8G 69% /usr/src |
I tried investigate issue and in dmesg i found that during booting is some problem with lvm, probably some commands missing(failed to execute >>> No such file or directory):
| Code: | pc-marek1 /etc # dmesg | grep -i lvm
[ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-6.12.1-gentoo-x86_64 root=/dev/mapper/system-root ro dolvm domdadm rootfstype=ext4 pv6.disable=1 mitigations=auto rd.driver.blacklist=nouveau nouveau.modeset=0 nvidia_drm.modeset=1 video=vesafb:off,efifb:on rd.lvm.vg=system
[ 0.279490] Kernel command line: BOOT_IMAGE=/vmlinuz-6.12.1-gentoo-x86_64 root=/dev/mapper/system-root ro dolvm domdadm rootfstype=ext4 pv6.disable=1 mitigations=auto rd.driver.blacklist=nouveau nouveau.modeset=0 nvidia_drm.modeset=1 video=vesafb:off,efifb:on rd.lvm.vg=system
[ 0.279698] Unknown kernel command line parameters "dolvm domdadm BOOT_IMAGE=/vmlinuz-6.12.1-gentoo-x86_64", will be passed to user space.
[ 2.649439] dolvm
[ 3.979142] udevd[2401]: failed to execute '/usr/bin/systemd-run' '/usr/bin/systemd-run --no-block --property DefaultDependencies=no --unit lvm-activate-system /usr/sbin/lvm vgchange -aay --autoactivation event system': No such file or directory
[ 4.002315] udevd[2402]: failed to execute '/usr/bin/systemd-run' '/usr/bin/systemd-run --no-block --property DefaultDependencies=no --unit lvm-activate-data02 /usr/sbin/lvm vgchange -aay --autoactivation event data02': No such file or directory
[ 4.002376] udevd[2403]: failed to execute '/usr/bin/systemd-run' '/usr/bin/systemd-run --no-block --property DefaultDependencies=no --unit lvm-activate-kvm-storage /usr/sbin/lvm vgchange -aay --autoactivation event kvm-storage': No such file or directory
[ 4.002417] udevd[2404]: failed to execute '/usr/bin/systemd-run' '/usr/bin/systemd-run --no-block --property DefaultDependencies=no --unit lvm-activate-data01 /usr/sbin/lvm vgchange -aay --autoactivation event data01': No such file or directory
[ 6.697823] systemd[1]: Listening on LVM2 poll daemon socket.
[ 6.733309] systemd[1]: Starting Monitoring of LVM2 mirrors, snapshots etc. using dmeventd or progress polling... |
It look like that in vmlinuz-6.12.1-gentoo-x86_64 missing some lvm commnads. After mounting root and usr as dm-X devices are rest of lvm volumes mounted correctly.
kernel I commpile via genkernel:
| Code: | | pc-marek1 /etc # genkernel --oldconfig --lvm --mdadm all |
In /etc/default/grub i have line:
| Code: | | GRUB_CMDLINE_LINUX="dolvm domdadm rootfstype=ext4 pv6.disable=1 mitigations=auto rd.driver.blacklist=nouveau nouveau.modeset=0 nvidia_drm.modeset=1 video=vesafb:off,efifb:on rd.lvm.vg=system" |
I checked "how to" of grub, lvm and genkernel but i didn't find nothing useful. Please help me. |
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madurani
n00b
Joined: 08 Mar 2017
Posts: 57
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| Posted: Thu Nov 28, 2024 8:47 am Post subject: Re: Genkernel - LVM issue |
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I tried extract initramfs-6.12.1-gentoo-x86_64.img and there missing commnad/file systemd-run
| Code: | pc-marek1 ~/test # file /boot/initramfs-6.12.1-gentoo-x86_64.img
/boot/initramfs-6.12.1-gentoo-x86_64.img: XZ compressed data, checksum NONE
pc-marek1 ~/test # xzcat /boot/initramfs-6.12.1-gentoo-x86_64.img | cpio -idm
pc-marek1 ~/test # find . | grep systemd-run
pc-marek1 ~/test #
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sam_
Developer
Joined: 14 Aug 2020
Posts: 2039
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| Posted: Thu Nov 28, 2024 3:28 pm Post subject: |
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| See bug 944499. |
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madurani
n00b
Joined: 08 Mar 2017
Posts: 57
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| Posted: Thu Nov 28, 2024 3:59 pm Post subject: |
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| Yes i saw it and past there my issues, but bug is for "systems without systemd" and i use systemd... |
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madurani
n00b
Joined: 08 Mar 2017
Posts: 57
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| Posted: Thu Nov 28, 2024 8:14 pm Post subject: |
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command:
| Code: | dracut --force --add systemd --add lvm /boot/initramfs-$(uname -r).img $(uname -r)
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fixed all my trouble with udev and mainly with mount of root and usr:
| Code: | pc-marek1 ~ # df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/system-root 15G 156M 14G 2% /
/dev/mapper/system-usr 21G 15G 4.6G 77% /usr |
all messages udev messages "No such file or directory" disappeared |
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sublogic
Apprentice
Joined: 21 Mar 2022
Posts: 284
Location: Pennsylvania, USA
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| Posted: Fri Nov 29, 2024 12:42 am Post subject: Re: Genkernel - LVM issue |
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| madurani wrote: | | Hello All, When i wonted to extend /usr lvm volume so i found out that is incorrect mounted. Volume is lvm, but mounted is as dm-8. |
I think your dm-8 mount is normal. For example on my computer: | Code: | $ mount -l -t ext4
/dev/mapper/vg0-root on / type ext4 (rw,relatime)
/dev/mapper/vg0-var on /var type ext4 (rw,relatime)
/dev/mapper/vg0-home on /home type ext4 (rw,relatime) |
| Code: | $ file /dev/mapper/vg0-{root,var,home}
/dev/mapper/vg0-root: symbolic link to ../dm-1
/dev/mapper/vg0-var: symbolic link to ../dm-2
/dev/mapper/vg0-home: symbolic link to ../dm-3 |
The systemd errors are another matter. |
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madurani
n00b
Joined: 08 Mar 2017
Posts: 57
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| Posted: Fri Nov 29, 2024 7:05 am Post subject: Re: Genkernel - LVM issue |
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Mount point with dm isn't problem. Problem is when you need extend this lvm volume, then you got error message
| Code: | pc-marek1 /usr/portage/sys-kernel/genkernel # lvresize -r -L +1G /dev/mapper/system-root
LV /dev/mapper/system-root mounted at / may have been renamed (from /dev/dm-5).
File system resizing not supported: fs utilities do not support renamed devices. |
dracut fixed it, now are volumes mounted correctly and lvextend and lvresize work . |
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sublogic
Apprentice
Joined: 21 Mar 2022
Posts: 284
Location: Pennsylvania, USA
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| Posted: Fri Nov 29, 2024 11:52 pm Post subject: |
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Strange, but did you try this ? | Code: | | # lvresize -r -L +1G /dev/dm-5 |
Oops, I see that it got fixed. Never mind. |
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