On Thu, 2021-01-28 at 10:18 -0800, Adam Williamson wrote: > On Thu, 2021-01-28 at 14:16 +0000, Zbigniew Jędrzejewski-Szmek wrote: > > On Thu, Jan 28, 2021 at 03:20:38PM +0200, Alexander Bokovoy wrote: > > > With today's OpenQA tests I can point out that using zram on 2048MB RAM > > > VMs actually breaks FreeIPA deployment: > > > https://openqa.fedoraproject.org/tests/763006#step/role_deploy_domain_controller/35 > > > > > > OpenQA uses 2048MB RAM for QEMU VMs and this was typically OK for > > > FreeIPA deployment with integrated CA and DNS server. Not anymore with > > > zram activated: > > > > > > Jan 27 21:17:47 fedora zram_generator::generator[25243]: Creating unit dev-zram0.swap (/dev/zram0 with 1384MB) > > > > > > which ends up eating 2/3rds of the whole memory budget and FreeIPA > > > installer fails: > > > > > > 2021-01-28T02:18:31Z DEBUG ipa-server-install was invoked with arguments [] and options: {'unattended': True, 'ip_addresses': None, 'domain_name': 'test.openqa.fedoraproject.org', 'realm_name': 'TEST.OPENQA.FEDORAPROJECT.ORG', 'host_name': None, 'ca_cert > > > 2021-01-28T02:18:31Z DEBUG IPA version 4.9.1-1.fc34 > > > 2021-01-28T02:18:31Z DEBUG IPA platform fedora > > > 2021-01-28T02:18:31Z DEBUG IPA os-release Fedora 34 (Server Edition Prerelease) > > > 2021-01-28T02:18:31Z DEBUG Available memory is 823529472B > > > ... > > > 2021-01-28T02:18:31Z DEBUG The ipa-server-install command failed, exception: ScriptError: Less than the minimum 1.2GB of RAM is available, 0.77GB available > > > 2021-01-28T02:18:31Z ERROR Less than the minimum 1.2GB of RAM is available, 0.77GB available > > > 2021-01-28T02:18:31Z ERROR The ipa-server-install command failed. See /var/log/ipaserver-install.log for more information > > > > Enabling zram doesn't really "take away memory", because no pre-allocation happens. > > If there is no physical swap, then adding zram0 should just shown additional > > swap space, so I don't think it could cause the check to fail. > > But if there is physical swap, the zram device is used with higher preference > > than the physical swap. So I think the explanation could be that the VM has > > a swap partition. > > The openQA test in question runs after, and uses the hard disk from, a > test that runs a default Fedora Server install: > https://openqa.fedoraproject.org/tests/763650 > which, AIUI, should not be creating a swap partition. The logs from the test - > https://openqa.fedoraproject.org/tests/763657/file/role_deploy_domain_controller-var_log.tar.gz - > do not show any swaps being activated other than zram ones. So no, I > don't think there is a swap partition. Probably relevant - we log the output of `free` shortly after system install. Up to and including Fedora-Rawhide-20210124.n.0 , it looked approximately like this: total used free shared buff/cache available Mem: 2024132 189668 1609448 4104 225016 1684936 Swap: 1011708 0 1011708 Particularly, "total" memory was reported as around 2000000 bytes. In Fedora-Rawhide-20210127.n.1 and Fedora-Rawhide-20210128.n.0, though - the two most recent composes - it looks like this: total used free shared buff/cache available Mem: 1417856 311908 852832 4104 253116 944752 Swap: 1417212 0 1417212 "total" memory is now reported as around 1400000 bytes. Not sure what caused this to change. -- Adam Williamson Fedora QA IRC: adamw | Twitter: adamw_ha https://www.happyassassin.net _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
