"mount: '/dev/block/dm-1' not user mountable in fstab" on Pixel XL(marlin-user-build)

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"mount: '/dev/block/dm-1' not user mountable in fstab" on Pixel XL(marlin-user-build)

zhangbo5891001
Hi, all

I want to modify some files on /system or /vendor partition in my Pixel XL device, but i got the following errors:

marlin:/ $ mount -o rw,remount -t ext4 /system
mount: '/system' not in /proc/mounts
1|marlin:/ $ mount -o rw,remount -t ext4 /vendor                                                                                                             
mount: '/dev/block/dm-1' not user mountable in fstab

I flashed the Pixel XL's factory image, and i modify the kernel, and reflashed it, got some root privilleges; the fingerprint: google/marlin/marlin:8.1.0/OPM2.171019.029/4657601:user/release-keys

and i check the mount output, i'm wondering why there is not mounted system partition and what
s the dm-1?

after some googling, someone said it's related to the dm-verity, so i add the boot parameter androidboot.veritymode=logging, want to disable dm-verity, but the device boots failed.

Any advice, i'll be appreciated.
Thanks in advance.

mount output:
rootfs on / type rootfs (rw,seclabel)
/dev/root on / type ext4 (ro,seclabel,relatime,data=ordered)
tmpfs on /dev type tmpfs (rw,seclabel,nosuid,relatime,size=1895876k,nr_inodes=473969,mode=755)
devpts on /dev/pts type devpts (rw,seclabel,relatime,mode=600)
proc on /proc type proc (rw,relatime,gid=3009,hidepid=2)
sysfs on /sys type sysfs (rw,seclabel,relatime)
selinuxfs on /sys/fs/selinux type selinuxfs (rw,relatime)
/dev/block/dm-1 on /vendor type ext4 (ro,seclabel,relatime,data=ordered)
/dev/block/sdd3 on /persist type ext4 (rw,seclabel,nosuid,nodev,noatime,data=ordered)
none on /acct type cgroup (rw,relatime,cpuacct)
debugfs on /sys/kernel/debug type debugfs (rw,seclabel,relatime)
none on /dev/stune type cgroup (rw,relatime,schedtune)
tmpfs on /mnt type tmpfs (rw,seclabel,relatime,size=1895876k,nr_inodes=473969,mode=755,gid=1000)
none on /config type configfs (rw,relatime)
none on /dev/cpuctl type cgroup (rw,relatime,cpu)
none on /dev/cpuset type cgroup (rw,relatime,cpuset,noprefix,release_agent=/sbin/cpuset_release_agent)
pstore on /sys/fs/pstore type pstore (rw,seclabel,relatime)
/dev/block/sda25 on /firmware/radio type vfat (ro,context=u:object_r:firmware_file:s0,relatime,uid=1000,fmask=0337,dmask=0227,codepage=437,iocharset=iso8859-1,shortname=lower,errors=remount-ro)
tmpfs on /storage type tmpfs (rw,seclabel,relatime,size=1895876k,nr_inodes=473969,mode=755,gid=1000)
tracefs on /sys/kernel/debug/tracing type tracefs (rw,seclabel,relatime)
adb on /dev/usb-ffs/adb type functionfs (rw,noatime)
mtp on /dev/usb-ffs/mtp type functionfs (rw,noatime)
/dev/block/sda35 on /data type ext4 (rw,seclabel,nosuid,nodev,noatime,noauto_da_alloc,errors=panic,data=ordered)
/data/media on /mnt/runtime/default/emulated type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=1015,multiuser,mask=6,derive_gid)
/data/media on /storage/emulated type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=1015,multiuser,mask=6,derive_gid)
/data/media on /mnt/runtime/read/emulated type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,multiuser,mask=23,derive_gid)
/data/media on /mnt/runtime/write/emulated type sdcardfs (rw,nosuid,nodev,noexec,noatime,fsuid=1023,fsgid=1023,gid=9997,multiuser,mask=7,derive_gid)

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