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Linux:: EXT4-fs odds?!?

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0db:
One year ago I formatted a hard drive as Ext3, and installed Linux.

and I saw and ignored these weird messages

but I continuously see these messages

--- Code: ---EXT4-fs (sda3): couldn't mount as ext3 due to feature incompatibilities
EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)

--- End code ---

One year later I tried to convert it into Ext4


--- Code: ---#tune2fs -O extents,uninit_bg,dir_index /dev/sda3

--- End code ---

but I still see these messages


--- Code: ---EXT4-fs (sda3): couldn't mount as ext3 due to feature incompatibilities
EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)
EXT4-fs (sda3): re-mounted. Opts: (null)

--- End code ---

and it makes no sense for me


--- Code: ---#cat /etc/fstab | grep sda3
/dev/sda3       /               ext4            noatime         0 1

--- End code ---


--- Code: ---#cat /etc/fstab | grep sda3
/dev/sda3       /               ext4            noatime         0 1

--- End code ---


--- Code: ---#cat /etc/mtab
/dev/sda3 / ext4 rw 0 0
none /proc proc rw 0 0
none /sys sysfs rw 0 0
mpme /dev/pts devpts rw 0 0

--- End code ---



but wait, see this


--- Code: ---#file -s /dev/sda3
/dev/sda3: Linux rev 1.0 ext3 filesystem data (needs journal recovery) (large files)

--- End code ---


I am a bit confused ...


edit:
typo fixed

greenpossum:
You should do a repair as the last message says with fsck. All behaviour are suspect on an inconsistent filesystem. The tune2fs requires a clean filesystem if you follow the instructions..

0db:

--- Code: ---# fsck.ext4 -f /dev/sda3

--- End code ---

I have already checked, and there is any problem reported by fsck. Besides, the above warning-messages were present even one year ago and they are the same warning-messages.

greenpossum:
In your tune2fs command you specified sda4. Is that a typo or is that copy and paste?

0db:

--- Quote from: greenpossum on April 03, 2020, 12:15:21 pm ---In your tune2fs command you specified sda4. Is that a typo or is that copy and paste?

--- End quote ---

typo.

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