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I found these in my /var/log/messages:

kernel: EXT4-fs warning (device md2): ext4_dx_add_entry: Directory index full!
kernel: EXT4-fs warning (device md2): ext4_dx_add_entry: Directory index full!
kernel: EXT4-fs warning (device md2): ext4_dx_add_entry: Directory index full!

I rebooted the system with a rescue system/image and without mounting the drives, I ran fsck like this: fsck -f /dev/md1 and then fsck -f /dev/md2

This is the result:

root@rescue ~ # fsck -f /dev/md1
fsck from util-linux 2.20.1
e2fsck 1.42.5 (29-Jul-2012)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/md1: 39/131072 files (28.2% non-contiguous), 47998/524224 blocks
root@rescue ~ # fsck -f /dev/md2
fsck from util-linux 2.20.1
e2fsck 1.42.5 (29-Jul-2012)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/md2: 33915958/121020416 files (0.5% non-contiguous), 119497991/484052208 blocks
root@rescue ~ #

Does this fsck result look OK ? It was first time I used it. Is there anything to worry about because of those index full errors ?

Edit: This is the output of command df -i

Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/dev/md2             121020416 33929994 87090422   29% /
tmpfs                4109010       2 4109008    1% /dev/shm
/dev/md1              131072      39  131033    1% /boot
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  • What OS is this? Are you running fsck on the live mounts? Can you paste the output of df -i ?
    – deppfx
    Aug 1, 2014 at 7:37
  • @deppfx I edited my question and included the df -i output, I assume that 29% is what interests you? I knew I had many files in one folder and I kept an eye on this value, it was always around 29%. I didn't ran the fsck directly on the machine, I booted in a separate "rescue" OS.
    – adrianTNT
    Aug 4, 2014 at 1:42
  • Try fsck -D by this: askubuntu.com/questions/644071/…
    – VictorLee
    Apr 15, 2022 at 2:52

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