[systemd-devel] nested x-systemd.automount - parent always mounted

[Reindl Harald]

Am 28.07.20 um 12:05 schrieb Lennart Poettering:
> On Di, 28.07.20 02:02, Reindl Harald (h.reindl at thelounge.net) wrote:
> 
>> Hi
>>
>> is this a kernel limitation or could systemd act better by *not* mount
>> /boot unconditional becasue of the inherited /boot/efi?
> 
> I think the kernel could theoretically support that, but we don't
> right now, and I am not sure the usecase is strong enough, since it
> makes idle detection pretty weird too...
> 
> It's one of the reasons why we recommend to mount the ESP to /efi and
> not submount it into /boot (why would one even, it's so weird that
> many Linux distros do that...). It's also what
> systemd-gpt-auto-generator does by default...
> 
> My recommendation: mount the ESP to /efi, and maybe add a symlink from
> /boot/efi → /efi, which makes things work with old code that insists
> that the ESP must be available in /boot/efi...

yeah, i buy that

------------------------

* umount /boot/efi; mkdir /efi; chmod 0755 /efi; rmdir /boot/efi; ln -s
/efi /boot/efi

* edit fstab
* reboot

------------------------

[root at firewall:~]$ ls /boot/
total 30M
lrwxrwxrwx   1 root root    4 2020-07-28 12:12 efi -> /efi
drwx------   6 root root 1.0K 2020-07-13 20:30 grub2
drwxr-xr-x   3 root root 1.0K 2018-07-30 22:40 loader
drwx------   2 root root  12K 2013-10-13 22:52 lost+found
dr-xr-xr-x.  5 root root 1.0K 2020-07-28 12:12 .
dr-xr-xr-x. 20 root root 4.0K 2020-07-28 12:12 ..
-rw-r--r--   1 root root  167 2020-07-23 02:23
.vmlinuz-5.7.10-101.fc31.x86_64.hmac
-rw-------   1 root root  15M 2020-07-28 02:15
initramfs-5.7.10-101.fc31.x86_64.img
-rw-------   1 root root 5.0M 2020-07-23 02:25
System.map-5.7.10-101.fc31.x86_64
-rw-r--r--   1 root root 217K 2020-07-23 02:25 config-5.7.10-101.fc31.x86_64
-rwxr-xr-x   1 root root  11M 2020-07-23 02:26
vmlinuz-5.7.10-101.fc31.x86_64

[root at firewall:~]$ ls /boot/efi/
total 26K
drwxr-xr-x   4 root root 2.0K 2020-06-30 18:49 EFI
drwxr-xr-x   3 root root  16K 1970-01-01 01:00 .
dr-xr-xr-x. 20 root root 4.0K 2020-07-28 12:12 ..

Jul 28 12:13:40 firewall.esx.vmware.local systemd-fsck[675]: boot:
clean, 344/102400 files, 67904/409600 blocks
Jul 28 12:13:40 firewall.esx.vmware.local systemd[1]: Started File
System Check on /dev/disk/by-uuid/48ffb5f1-9ee0-4637-85ab-089e3c91c578.
Jul 28 12:13:40 firewall.esx.vmware.local systemd[1]: Mounting /boot...
Jul 28 12:13:40 firewall.esx.vmware.local kernel: EXT4-fs (sda3):
mounted filesystem without journal. Opts: discard
Jul 28 12:13:40 firewall.esx.vmware.local systemd[1]: Mounted /boot.
Jul 28 12:13:43 firewall.esx.vmware.local systemd[1]: efi.automount: Got
automount request for /efi, triggered by 681 (ls)
Jul 28 12:13:43 firewall.esx.vmware.local systemd[1]: Starting File
System Check on /dev/disk/by-uuid/8C0B-91C5...
Jul 28 12:13:43 firewall.esx.vmware.local systemd-fsck[682]: fsck.fat
4.1 (2017-01-24)
Jul 28 12:13:43 firewall.esx.vmware.local systemd-fsck[682]: /dev/sda1:
12 files, 3830/51091 clusters
Jul 28 12:13:43 firewall.esx.vmware.local systemd[1]: Started File
System Check on /dev/disk/by-uuid/8C0B-91C5.
Jul 28 12:13:43 firewall.esx.vmware.local systemd[1]: Mounting /efi...
Jul 28 12:13:43 firewall.esx.vmware.local systemd[1]: Mounted /efi.