This tip returns the file path almost instantly:

[root@omiday ~]# time find / -xdev -inum 2883629
/var/log/dnf.librepo.log-20161120

real    0m17.867s
user    0m0.575s
sys     0m8.186s


[root@omiday ~]# time debugfs -R 'ncheck 2883629' /dev/dm-1
debugfs 1.43.3 (04-Sep-2016)
Inode   Pathname
2883629 /var/log/dnf.librepo.log-20161120

real    0m0.316s
user    0m0.149s
sys     0m0.162s

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