SystemD and FIFO Sockets in RHEL7
There's a bug with a relevant discussion on systemd 's approach to FIFO socket deletion. As of systemd-214 the issue with "stale" sockets was resolved by supplying the `RemoveOnStop` option to its corresponding `.service`. However, at the moment RHEL7 has systemd-208 as the default version; and I am seeing the following errors in `dmesg` output: systemd[1]: systemd 208 running in system mode. (+PAM +LIBWRAP +AUDIT +SELINUX +IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ) systemd[1]: /usr/lib/systemd/system-generators/anaconda-generator exited with exit status 1. [ +0.056775] systemd[1]: [/usr/lib/systemd/system/lvm2-lvmetad.socket:9] Unknown lvalue 'RemoveOnStop' in section 'Socket' [ +0.000675] systemd[1]: [/usr/lib/systemd/system/dm-event.socket:10] Unknown lvalue 'RemoveOnStop' in section 'Socket' I'm not sure if LVM2 is referencing a feature that's not available in the default systemd version; AFAIK, my confi