https://fedoraproject.org/wiki/Changes/RemoveDeviceMapperMultipathFromWorkstationLiveCD
== Summary == The Fedora workstation livecd is the default Fedora variant getfedora.org advices people to download. As such most Fedora workstation installs will be done from the livecd. This means that any package which is part of the livecd will be part of the default install for most users. device-mapper-multipath is 1 of only 2 packages in the default install which still Requires the long obsoleted systemd-udev-settle.service, which waits for all device-detection to be done + some extra waiting just to be sure. This significantly slows down booting on various systems. Multipath support is only necessary for installations in data-centers or other enterprise setups, as such having device-mapper-multipath on the livecd is not really necessary. For installations which do actually need this device-mapper-multipath the server installation iso can be used and this is a better fit for such installations. == Owner == * Name: [[User:jwrdegoede| Hans de Goede]] * Email: hdego...@redhat.com == Detailed Description == device-mapper-multipath is 1 of only 2 packages in the default install which still Requires the long obsoleted systemd-udev-settle.service. The other package is dmraid see [[Changes/DisableDmraidOnFirstRun|Disable dmraid.service on first run]]. Multipath support is only necessary for installations in data-centers or other enterprise setups, as such having device-mapper-multipath on the livecd is not really necessary. For installations which do actually need this device-mapper-multipath the server installation iso can be used and this is a better fit for such installations. Note then when installing from the server or everything netboot isos, device-mapper-multipath depending on the obsolete udev-settle service is not a problem, because then it will not be installed at all. Anaconda (the installer) adds storage related packages such as device-mapper-multipath to the installation package-set as necessary for the storage found at installation time. So any installs done through the netinst isos already will not have device-mapper-multipath installed. == Feedback == <!-- Summarize the feedback from the community and address why you chose not to accept proposed alternatives. This section is optional for all change proposals but is strongly suggested. Incorporating feedback here as it is raised gives FESCo a clearer view of your proposal and leaves a good record for the future. If you get no feedback, that is useful to note in this section as well. For innovative or possibly controversial ideas, consider collecting feedback before you file the change proposal. --> == Benefit to Fedora == systemd-udev-settle.service causes a significant and sometimes quite long delay during boot. Removing / disabling the last 2 services depending on this long obsolete helper service will remove the unnecessary boot delay. == Scope == * Proposal owners: ** Change the livecd packagelist (comps) to no longer include the device-mapper-multipath package * Other developers: ** No action is required by other developers ** Except if another package still brings in device-mapper-multipath through dependencies, then this needs to be solved / coordinated with that other packages maintainers * Release engineering: [https://pagure.io/releng/issue/9560 #9560] (a check of an impact with Release Engineering is needed) * Policies and guidelines: N/A (not needed for this Change) * Trademark approval: N/A (not needed for this Change) == Upgrade/compatibility impact == This only affects new installs, upgrades of installs which have device-mapper-multipath installed will still have it installed after the upgrade. == How To Test == # Install F33 on a machine / VM # Do "rpm -q device-mapper-multipath", the output should be "device-mapper-multipath" is not installed == User Experience == Faster booting Fedora when installed from the livecd. == Dependencies == There are no other changes / package updates this Change depends on; or which this change impacts. == Contingency Plan == * Contingency mechanism: Re-add device-mapper-multipath to the livecd if the dropping of it causes problems. * Blocks release? No == Documentation == This change does not require any documentation. -- Ben Cotton He / Him / His Senior Program Manager, Fedora & CentOS Stream Red Hat TZ=America/Indiana/Indianapolis
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