[Solved] How I got fsck.f2fs to get unstuck and fix not booting PP

[gab]

Strange, happened again today.

I got this from booting Mobian on sdcard:

root@mobian:/home/mobian# fsck /dev/mmcblk2p2
fsck from util-linux 2.37.2
Info: Segments per section = 1
Info: Sections per zone = 1
Info: sector size = 512
Info: total sectors = 60022751 (29307 MB)
Info: MKFS version
  "Linux version 5.9.0-5-amd64 (debian-kernel@lists.debian.org) (gcc-10 (Debian 10.2.1-1) 10.2.1 20201207, GNU ld (GNU Binutils for Debian) 2.35.1) #1 SMP Debian 5.9.15-1 (2020-12-17)"
Info: FSCK version
  from "Linux version 5.9.0-5-amd64 (debian-kernel@lists.debian.org) (gcc-10 (Debian 10.2.1-1) 10.2.1 20201207, GNU ld (GNU Binutils for Debian) 2.35.1) #1 SMP Debian 5.9.15-1 (2020-12-17)"
    to "Linux version 5.10-sunxi64 (builder@mobian) (gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #1 SMP PREEMPT Sat Aug 7 12:10:38 UTC 2021"
Info: superblock features = 0 :
Info: superblock encrypt level = 0, salt = 00000000000000000000000000000000
Info: total FS sectors = 60022744 (29307 MB)
Info: CKPT version = 5439e952
[  56.014787] ov5640 4-004c: firmware upload success
[f2fs_do_mount:3563] record_fsync_data failed

then

root@mobian:/home/mobian# mkdir /media/mmcbk2p2
root@mobian:/home/mobian# mount /dev/mmcblk2p2 /media/mmcbk2p2
[  79.500869] F2FS-fs (mmcblk2p2): recover_inode: ino = 14b47, name = permissions.sqlite, inline = 1
[  79.510263] F2FS-fs (mmcblk2p2): recover_data: ino = 14b47 (i_size: keep) recovered = 16, err = 0
[  79.519219] F2FS-fs (mmcblk2p2): recover_inode: ino = 38f91, name = webappsstore.sqlite-wal, inline = 1
[  79.529627] F2FS-fs (mmcblk2p2): recover_data: ino = 38f91 (i_size: keep) recovered = 121, err = 0
[  79.538696] F2FS-fs (mmcblk2p2): recover_inode: ino = 14b7c, name = webappsstore.sqlite, inline = 1
[  79.548059] F2FS-fs (mmcblk2p2): recover_data: ino = 14b7c (i_size: keep) recovered = 24, err = 0
[  79.561690] F2FS-fs (mmcblk2p2): recover_data: ino = 14b7c (i_size: keep) recovered = 16, err = 0
[  79.570605] F2FS-fs (mmcblk2p2): recover_inode: ino = 3a147, name = 3318935238tbwe.sqlite-wal, inline = 1
[  79.580286] F2FS-fs (mmcblk2p2): recover_data: ino = 3a147 (i_size: keep) recovered = 1, err = 0
[  79.589106] F2FS-fs (mmcblk2p2): recover_inode: ino = 38f91, name = webappsstore.sqlite-wal, inline = 1
[  79.598602] F2FS-fs (mmcblk2p2): recover_data: ino = 38f91 (i_size: keep) recovered = 0, err = 0
[  79.607421] F2FS-fs (mmcblk2p2): recover_inode: ino = 3a147, name = 3318935238tbwe.sqlite-wal, inline = 1
[  79.617076] F2FS-fs (mmcblk2p2): recover_data: ino = 3a147 (i_size: keep) recovered = 3, err = 0
[  79.625899] F2FS-fs (mmcblk2p2): recover_inode: ino = 1ba3, name = 3318935238tbwe.sqlite, inline = 1
[  79.635118] F2FS-fs (mmcblk2p2): recover_data: ino = 1ba3 (i_size: keep) recovered = 0, err = 0
[  79.644860] F2FS-fs (mmcblk2p2): recover_inode: ino = 3a147, name = 3318935238tbwe.sqlite-wal, inline = 1
[  79.654520] F2FS-fs (mmcblk2p2): recover_data: ino = 3a147 (i_size: keep) recovered = 1, err = 0
[  79.674609] F2FS-fs (mmcblk2p2): checkpoint: version = 5439e953
[  79.680821] F2FS-fs (mmcblk2p2): Mounted with checkpoint version = 5439e953

This time, simply mounting / unmounting from Mobian on sdcard fixed the boot of Mobian on the eMMC.