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bstaletic
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Joined: 05 Apr 2014
Posts: 336
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 Posted: Sat Oct 12, 2024 6:23 am Post subject: sys-boot/syslinux cannot find device for path /boot/extlinux |
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I've just migrated from lilo to extlinux and have booted just fine, however...
The entire time messing with bootloaders, extlinux failed to detect the device for /boot/extlinux, saying
| Code: | bstaletic@Gallifrey ~ % doas extlinux -U /boot/
extlinux: cannot find device for path /boot/
extlinux: cannot open device (null) |
I can specify the device manually, but maybe there's a problem I'm overlooking?
Additional info:
| lsblk wrote: | | Code: | NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 232.9G 0 disk
├─sda1 8:1 0 50G 0 part /
└─sda2 8:2 0 182.9G 0 part /home |
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| ls -lA /boot wrote: | | Code: | total 31576
drwxr-xr-x 2 root root 4096 Oct 12 08:02 extlinux
-rw-r--r-- 1 root root 512 Jan 3 2022 boot.0800
lrwxrwxrwx 1 root root 18 Oct 11 09:47 config -> config-6.11.3-test
-rw-r--r-- 1 root root 126244 Oct 6 02:01 config-6.11.2-test
-rw-r--r-- 1 root root 126388 Oct 11 09:47 config-6.11.3-test
lrwxrwxrwx 1 root root 18 Oct 6 02:01 config.old -> config-6.11.2-test
-rw-r--r-- 1 root root 0 Jan 2 2022 .keep
-r--r--r-- 1 root root 59904 Oct 12 07:15 ldlinux.sys
-rw------- 1 root root 25088 Oct 11 09:47 map
lrwxrwxrwx 1 root root 22 Oct 11 09:47 System.map -> System.map-6.11.3-test
-rw-r--r-- 1 root root 5536980 Oct 6 02:01 System.map-6.11.2-test
-rw-r--r-- 1 root root 5535927 Oct 11 09:47 System.map-6.11.3-test
lrwxrwxrwx 1 root root 22 Oct 6 02:01 System.map.old -> System.map-6.11.2-test
lrwxrwxrwx 1 root root 19 Oct 12 08:12 vmlinuz -> vmlinuz-6.11.3-test
-rw-r--r-- 1 root root 10454016 Oct 6 02:01 vmlinuz-6.11.2-test
-rw-r--r-- 1 root root 10445824 Oct 12 08:10 vmlinuz-6.11.3-test
lrwxrwxrwx 1 root root 19 Oct 6 02:01 vmlinuz.old -> vmlinuz-6.11.2-test |
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| ls -lA /boot/extlinux wrote: | | Code: | total 440
-rw-r--r-- 1 root root 519 Oct 12 07:56 extlinux.conf
-r--r--r-- 1 root root 115532 Oct 12 07:56 ldlinux.c32
-r--r--r-- 1 root root 59904 Oct 12 07:56 ldlinux.sys
-rw-r--r-- 1 root root 178660 Oct 12 06:37 libcom32.c32
-rw-r--r-- 1 root root 25396 Oct 12 06:37 libutil.c32
-rw-r--r-- 1 root root 26792 Oct 12 06:37 memdisk
-rw-r--r-- 1 root root 26244 Oct 12 06:37 menu.c32 |
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| extlinux.conf wrote: | | Code: | TIMEOUT 10
ONTIMEOUT gentoo
LABEL gentoo
KERNEL /boot/vmlinuz
APPEND net.ifnames=0 rw root=/dev/sda1 init=/sbin/openrc-init sysrq_always_enabled=1
LABEL rescue
LINUX /boot/vmlinuz
APPEND net.ifnames=0 ro root=/dev/sda1 single init=/bin/bash sysrq_always_enabled=1
LABEL old
LINUX /boot/vmlinuz.old
APPEND net.ifnames=0 rw root=/dev/sda1 init=/sbin/openrc-init sysrq_always_enabled=1
LABEL oldrescue
LINUX /boot/vmlinuz.old
APPEND net.ifnames=0 ro root=/dev/sda1 single init=/bin/bash sysrq_always_enabled=1 |
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EDIT: Also, at one point I did extlinux -i /boo --device /dev/sda1, then I realized I shouldn't have and tried to remove /boot/ld*, but ldlinux.sys has 0400 permissions. |
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bstaletic
Guru
Joined: 05 Apr 2014
Posts: 336
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| Posted: Sat Oct 12, 2024 6:49 am Post subject: |
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Okay, so /proc/self/mounts is talking about /dev/root, but on boot I do not have /dev/root symlink.
Manually triggering udevadm does create that symlink.
After that, extlinux can find /dev/root.
So why would the symlink be missing at boot?
To be honest, I'd rather /proc/self/mounts show /dev/sda1 rather than /dev/root
EDIT:
Considering this udev-trigger init script:
https://gitweb.gentoo.org/proj/udev-gentoo-scripts.git/tree/init.d/udev-trigger
I can see my system executing this section: | Code: | ebegin "Populating /dev with existing devices through uevents"
udevadm trigger --type=subsystems --action=add
udevadm trigger --type=devices --action=add
eend $? |
However, the /dev/root symlink is only created in the other section: | Code: | einfo "Setting /dev permissions and symbolic links"
udevadm trigger --attr-match=dev --action=add
udevadm trigger --subsystem-match=net --action=add
rc=$?
ewarn "Skipping udev coldplug sequence"
return $rc |
EDIT2:
I tried switching udev-trigger service to hotpugging, but that didn't create the /dev/root symlink either.
However, manually running either of these commands does create the symlink:
| Code: | | udevadm trigger --attr-match=dev --action=add |
| Code: | | udevadm trigger --type=devices --action=add |
Now I'm definitely stumped. |
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