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Description of problem:

On a large system (+1200 device units) "systemd-analyze dump" fails with the "Failed issue method call: No buffer space available" error.

# systemd-analyze dump
Failed issue method call: No buffer space available

Version-Release number of selected component (if applicable):

systemd-219-30.el7_3.6.x86_64

How reproducible:

ALWAYS

Steps to Reproduce:

didn't try

Additional info:

Other systemd-analyze commands work perfectly

This hits the defined DBus message size limit--64 MiB. We could increase that, but not by much, as the max. message size allowed by DBus spec is 128 MiB (and the max. size can be also limited by dbus daemon). What's needed is to pass the dump data via a different channel.

https://github.com/lnykryn/systemd-rhel/pull/205

fix merged to staging branch -> https://github.com/lnykryn/systemd-rhel/pull/205 -> post

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:3245