[Magisk] mobadass:
I'm trying to get some Magisk logs of 14.2 on my Xiaomi Mi A1.

I rooted A and installed Magisk on to B and when I go to B and boot it just boot-loops.

So back on A I looked in /data and /cache (Did a "find" on /) and I couldn't find the Magisk logs.

I believe the /data partition is shared between A/B because it's /dev/block/dm-0 so I'm not sure why I can't find it.

There doesn't seem to be a /tmp mount so I can't get the recovery logs and I can't find them anywhere else.

Here's "mount" on B

/dev/root on / type ext4 (ro,seclabel,relatime,data=ordered)
tmpfs on /dev type tmpfs (rw,seclabel,nosuid,relatime,size=1819524k,nr_inodes=454881,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)
debugfs on /sys/kernel/debug type debugfs (rw,seclabel,relatime)
none on /acct type cgroup (rw,relatime,cpuacct)
tmpfs on /mnt type tmpfs (rw,seclabel,relatime,size=1819524k,nr_inodes=454881,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/bootdevice/by-name/modem_b on /firmware 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)
/dev/block/bootdevice/by-name/persist on /persist type ext4 (rw,seclabel,nosuid,nodev,relatime,data=ordered)
/dev/block/bootdevice/by-name/dsp on /dsp type ext4 (ro,seclabel,nosuid,nodev,relatime,data=ordered)
tmpfs on /storage type tmpfs (rw,seclabel,relatime,size=1819524k,nr_inodes=454881,mode=755,gid=1000)
adb on /dev/usb-ffs/adb type functionfs (rw,relatime)
/dev/block/dm-0 on /data type ext4 (rw,seclabel,nosuid,nodev,relatime,discard,noauto_da_alloc,data=ordered)
/dev/fuse on /mnt/runtime/default/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /storage/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /mnt/runtime/read/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)
/dev/fuse on /mnt/runtime/write/emulated type fuse (rw,nosuid,nodev,noexec,noatime,user_id=1023,group_id=1023,default_permissions,allow_other)

Here's my /dev/block/bootdevice/by-name

130|tissot_sprout:/ # ls -lh dev/block/bootdevice/by-name/
total 0
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 DDR -> /dev/block/mmcblk0p16
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 aboot -> /dev/block/mmcblk0p20
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 abootbak -> /dev/block/mmcblk0p21
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 apdp -> /dev/block/mmcblk0p45
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 boot_a -> /dev/block/mmcblk0p22
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 boot_b -> /dev/block/mmcblk0p23
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 cmnlib -> /dev/block/mmcblk0p39
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 cmnlib64 -> /dev/block/mmcblk0p41
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 cmnlib64bak -> /dev/block/mmcblk0p42
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 cmnlibbak -> /dev/block/mmcblk0p40
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 config -> /dev/block/mmcblk0p30
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 devcfg -> /dev/block/mmcblk0p11
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 devcfgbak -> /dev/block/mmcblk0p12
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 devinfo -> /dev/block/mmcblk0p24
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 dip -> /dev/block/mmcblk0p33
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 dpo -> /dev/block/mmcblk0p47
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 dsp -> /dev/block/mmcblk0p13
lrwxrwxrwx 1 root root 20 1970-01-29 10:09 fsc -> /dev/block/mmcblk0p3
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 fsg -> /dev/block/mmcblk0p17
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 keymaster -> /dev/block/mmcblk0p43
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 keymasterbak -> /dev/block/mmcblk0p44
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 keystore -> /dev/block/mmcblk0p29
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 limits -> /dev/block/mmcblk0p31
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 lksecapp -> /dev/block/mmcblk0p37
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 lksecappbak -> /dev/block/mmcblk0p38
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 logdump -> /dev/block/mmcblk0p48
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 mcfg -> /dev/block/mmcblk0p36
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 mdtp -> /dev/block/mmcblk0p34
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 misc -> /dev/block/mmcblk0p28
lrwxrwxrwx 1 root root 20 1970-01-29 10:09 modem_a -> /dev/block/mmcblk0p1
lrwxrwxrwx 1 root root 20 1970-01-29 10:09 modem_b -> /dev/block/mmcblk0p2
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 modemst1 -> /dev/block/mmcblk0p14
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 modemst2 -> /dev/block/mmcblk0p15
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 mota -> /dev/block/mmcblk0p32
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 msadp -> /dev/block/mmcblk0p46
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 persist -> /dev/block/mmcblk0p27
lrwxrwxrwx 1 root root 20 1970-01-29 10:09 rpm -> /dev/block/mmcblk0p7
lrwxrwxrwx 1 root root 20 1970-01-29 10:09 rpmbak -> /dev/block/mmcblk0p8
lrwxrwxrwx 1 root root 20 1970-01-29 10:09 sbl1 -> /dev/block/mmcblk0p5
lrwxrwxrwx 1 root root 20 1970-01-29 10:09 sbl1bak -> /dev/block/mmcblk0p6
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 sec -> /dev/block/mmcblk0p18
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 splash -> /dev/block/mmcblk0p19
lrwxrwxrwx 1 root root 20 1970-01-29 10:09 ssd -> /dev/block/mmcblk0p4
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 syscfg -> /dev/block/mmcblk0p35
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 system_a -> /dev/block/mmcblk0p25
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 system_b -> /dev/block/mmcblk0p26
lrwxrwxrwx 1 root root 20 1970-01-29 10:09 tz -> /dev/block/mmcblk0p9
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 tzbak -> /dev/block/mmcblk0p10
lrwxrwxrwx 1 root root 21 1970-01-29 10:09 userdata -> /dev/block/mmcblk0p49

Here is the stock image and the 14.2 patched version of it: https:// ufile .io/8c5jz (remove spaces)

One thing of note is that the boot.img that the factory image includes is ~30MB and these ones are ~60MB.

My guess is that there is something going wrong patching the image and it's not even getting to the point where it would start logging.

Anyone have any ideas on where I could find the logs or any other information that would be helpful for the developers?