mount issue for ext4 filesystem with hibernation support.

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Hello

When we added the hibernation support for android M, we are able to
hibernate and resume properly.but I want to resume every time from single
snapshot image which have been taken at first-boot. But I am having problem
with that image after 2nd boot onwards.

I am getting ext4 error, seems like block number mismatch and that
file-system on that partition is being remounted as read-only mode.

Below errors i am getting every time after 2nd boot onwards:
----------------------------------------------------------------------------
----
[   64.250735] EXT4-fs error (device mmcblk0p24):
ext4_mb_generate_buddy:758: group 9, block bitmap and bg descriptor
inconsistent: 31166 vs 31165 free clusters
[   64.252813] <3> (3)[1507:PackageManager]Aborting journal on device
mmcblk0p24-8.
[   64.267680] <3> (3)[1507:PackageManager]EXT4-fs (mmcblk0p24): Remounting
filesystem read-only
[   64.268667] <3> (1)[1:init]init: Starting service 'media'...
[   64.269479] <3> (3)[1507:PackageManager]EXT4-fs error (device mmcblk0p24)
in ext4_free_blocks:4881: Journal has aborted
[   64.272235] <3> (3)[1507:PackageManager]EXT4-fs error (device mmcblk0p24)
in ext4_reserve_inode_write:4999: Journal has aborted
[   64.278537] <3> (3)[1507:PackageManager]EXT4-fs error (device mmcblk0p24)
in ext4_reserve_inode_write:4999: Journal has aborted
[   64.283132] <3> (3)[1507:PackageManager]EXT4-fs error (device mmcblk0p24)
in ext4_ext_remove_space:3035: Journal has aborted
[   64.286970] <3> (3)[1507:PackageManager]EXT4-fs error (device mmcblk0p24)
in ext4_ext_truncate:4669: Journal has aborted
[   64.291775] <3> (3)[1507:PackageManager]EXT4-fs error (device mmcblk0p24)
in ext4_reserve_inode_write:4999: Journal has aborted
[   64.294465] <3> (3)[1507:PackageManager]EXT4-fs error (device mmcblk0p24)
in ext4_truncate:3894: Journal has aborted
[   64.297764] <3> (3)[1507:PackageManager]EXT4-fs error (device mmcblk0p24)
in ext4_reserve_inode_write:4999: Journal has aborted
[   64.300437] <3> (3)[1507:PackageManager]EXT4-fs error (device mmcblk0p24)
in ext4_orphan_del:2888: Journal has aborted

----------------------------------------------------------------------------
-------------------------

This is happening because mounted partition meta-data in RAM(old snapshot
image) is not matched with actual data in disk.

Please suggest me some way to overcome this problem.

Also is it possible to update file-system's meta-data to RAM from
partition(mounted and used by some apps)?

Regards,
Amit Agarwal



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