inodes órfãos no sistema de arquivos raiz (ext4); problema persistente

Question

Em meus sistemas confiáveis (VMs em vmWare, desktops e laptops), temos o seguinte problema.

O sistema de arquivos raiz parece ter inodes que nunca são marcados como "livres". Após um mês de um servidor em funcionamento, o df -i mostra um uso de 100% de inodes em / (um ext4 fs ).

Fazendo uma pré-visualização fsck mostra erros. Fazemos um touch / forcefsck e reinicializamos o sistema. Este inodes órfão correto, mas o problema aparece novamente.

Não há mensagens em /var/log/syslog . Os sistemas estão atualizados com a atualização mais recente e o kernel disponível na Trusty.

# fsck -nf /
fsck from util-linux 2.20.1
e2fsck 1.42.9 (4-Feb-2014)
Warning!  /dev/mapper/sys--vg-root is mounted.
Warning: skipping journal recovery because doing a read-only filesystem check.
Pass 1: Checking inodes, blocks, and sizes
Deleted inode 395860 has zero dtime.  Fix? no

Inodes that were part of a corrupted orphan linked list found.  Fix? no

Inode 395869 was part of the orphaned inode list.  IGNORED.
Inode 395871 was part of the orphaned inode list.  IGNORED.
Inode 395872 was part of the orphaned inode list.  IGNORED.
Inode 395873 was part of the orphaned inode list.  IGNORED.
Inode 395874 was part of the orphaned inode list.  IGNORED.
Inode 395875 was part of the orphaned inode list.  IGNORED.
Inode 395877 was part of the orphaned inode list.  IGNORED.
Inode 395878 was part of the orphaned inode list.  IGNORED.
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Block bitmap differences:  -1606447 -(1606994--1606995) -1606998 -1607063 -1607094     -1607128 -1607232 -1607687
Fix? no

Free blocks count wrong (2346388, counted=2345410).
Fix? no

Inode bitmap differences:  -395860 -395869 -(395871--395875) -(395877--395878)
Fix? no

Free inodes count wrong (662804, counted=662787).
Fix? no


/dev/mapper/sys--vg-root: ********** WARNING: Filesystem still has errors **********

/dev/mapper/sys--vg-root: 107244/770048 files (0.1% non-contiguous), 730732/3077120 blocks