Subject: tail: unrecognized file system type 0x794c7630 for...

From: Gustavo Frederico <[email-masked]>
Date: Thu, 26 Oct 2017 19:42:42 -0400

</txt>
</msg>
<msg time='2017-10-26T23:40:33.228+00:00' org_id='oracle' comp_id='tnslsnr'
 type='UNKNOWN' level='16' host_id='e7bd4e34ce20'
 host_addr='172.17.0.2'>
 <txt>26-OCT-2017 23:40:33 * service_update * orcl * 0
 </txt>
</msg>
[oracle@e7bd4e34ce20 admin]$ tail -f /u01/app/oracle/diag/tnslsnr/e7bd4e34ce20/listener/alert/log.xml 
 host_addr='172.17.0.2'>
 <txt>26-OCT-2017 23:40:24 * service_register * orcl * 0
 </txt>
</msg>
<msg time='2017-10-26T23:40:33.228+00:00' org_id='oracle' comp_id='tnslsnr'
 type='UNKNOWN' level='16' host_id='e7bd4e34ce20'
 host_addr='172.17.0.2'>
 <txt>26-OCT-2017 23:40:33 * service_update * orcl * 0
 </txt>
</msg>
tail: unrecognized file system type 0x794c7630 for '/u01/app/oracle/diag/tnslsnr/e7bd4e34ce20/listener/alert/log.xml'. please report this to [email-masked]. reverting to polling