Dear systemd folks,
Is an entry for / in `/etc/fstab` still needed, or is there a systemd
way of doing it?
Installing Debian bullseye/testing with the Debian Installer, it creates
a GPT and `/etc/fstab`.
$ systemd --version
systemd 246 (246.6-2)
+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP
+LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +ZSTD +SECCOMP +BLKID
+ELFUTILS +KMOD +IDN2 -IDN +PCRE2 default-hierarchy=hybrid
```
$ sudo gdisk /dev/nvme0n1
GPT fdisk (gdisk) version 1.0.5
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Command (? for help): p
Disk /dev/nvme0n1: 1000215216 sectors, 476.9 GiB
Model: SAMSUNG MZVKW512HMJP-00000
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): E367AC65-C92D-4600-8071-7F122612CC59
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 1000215182
Partitions will be aligned on 2048-sector boundaries
Total free space is 2669 sectors (1.3 MiB)
Number Start (sector) End (sector) Size Code Name
1 2048 1050623 512.0 MiB EF00
2 1050624 998215679 475.5 GiB 8300
3 998215680 1000214527 976.0 MiB 8200
```
```
$ more /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# systemd generates mount units based on this file, see systemd.mount(5).
# Please run 'systemctl daemon-reload' after making changes here.
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/nvme0n1p2 during installation
UUID=d23ce27e-5c5c-45fb-bfa8-79a87caff13f / ext4
errors=remount-ro 0 1
# /boot/efi was on /dev/nvme0n1p1 during installation
#UUID=FCD0-628D /boot/efi vfat umask=0077 0 1
# swap was on /dev/nvme0n1p3 during installation
UUID=ab3adb78-b618-48d3-8316-3177f20b03f8 none swap sw
0 0
```
Commenting out the entries for `/`, the root partition is mounted as
read-only.
$ findmnt /
TARGET SOURCE FSTYPE OPTIONS
/ /dev/nvme0n1p2 ext4 ro,relatime
Shouldn’t it be mounted as writable?
$ sudo /lib/systemd/systemd-remount-fs
$ findmnt /
TARGET SOURCE FSTYPE OPTIONS
/ /dev/nvme0n1p2 ext4 rw,relatime,errors=remount-ro
The log says:
[ 2.320133] systemd[179]:
/usr/lib/systemd/system-generators/systemd-gpt-auto-generator succeeded.
I can work around it changing `ro` to `rw` on the Linux command line,
but I thought, it is possible without that.
Kind regards,
Paul
_______________________________________________
systemd-devel mailing list
systemd-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/systemd-devel
