#162 problems with ext4 partition created by ubuntu 16.10

[Michal Seliga]

linux system: fully updated ubuntu 16.10 64bit
windows system: fully updated windows 10 anniversary edition

problem - as soon as I access ext4 partition from windows, linux won't boot and report corrupted superblock + some other errors. also if I write to ext4 partition from windows then windows 10 very often is unable to restart or shutdown and must be switched off using hw power button

before I was using some older ext2fsd version with partitions created years ago, i had no problems at all. after update of windows to anniversary edition I had to reinstall ext2fsd, I installed recent version - and it started to make problems during restart/shutdown, however linux had no problems with booting. with actual version of both extfsd, ubuntu and freshly reinstalled windows 10 (disk failure...) it behaves as I described above

If you want some additional information then please write me what you need and how to obtain it.

thanks in advance

[Michal Seliga]

created filesystem info

dumpe2fs 1.43.3 (04-Sep-2016)
Filesystem volume name: <none>
Last mounted on: /
Filesystem UUID: 623e2255-53a6-40e4-8ca1-2845f8c680ca
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum
Filesystem flags: signed_directory_hash
Default mount options: user_xattr acl
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 983040
Block count: 3932160
Reserved block count: 196608
Free blocks: 2231425
Free inodes: 763220
First block: 0
Block size: 4096
Fragment size: 4096
Group descriptor size: 64
Reserved GDT blocks: 1024
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
Flex block group size: 16
Filesystem created: Fri Oct 28 00:56:23 2016
Last mount time: Sun Oct 30 01:05:57 2016
Last write time: Sun Oct 30 01:05:56 2016
Mount count: 1
Maximum mount count: -1
Last checked: Sun Oct 30 01:05:56 2016
Check interval: 0 (<none>)
Lifetime writes: 268 MB
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 32
Desired extra isize: 32
Journal inode: 8
First orphan inode: 131125
Default directory hash: half_md4
Directory Hash Seed: b0a0ad4e-8328-4c5a-81b9-f4c5f5c9cfa0
Journal backup: inode blocks
Checksum type: crc32c
Checksum: 0x569d6037
Journal features: journal_incompat_revoke journal_64bit journal_checksum_v3
Journal size: 64M
Journal length: 16384
Journal sequence: 0x000080a1
Journal start: 1
Journal checksum type: crc32c
Journal checksum: 0xc777c8a5</none></none>