Cockpit 339

Author: tomasmatus

_posts/2025-05-21-cockpit-339.md

@@ -0,0 +1,63 @@
+---
+title: Cockpit 339
+author: tmatus
+date: '2025-05-21'
+tags: cockpit, podman, files, machines, ostree
+slug: cockpit-339
+category: release
+summary: 'Cockpit-ws arm64 container, warn on SMART failures, Cockpit no longer modifies the "shareable" attribute of disks'
+---
+
+Cockpit is the [modern Linux admin interface](https://cockpit-project.org/).
+We release regularly.
+
+Here are the release notes from Cockpit 339, cockpit-podman 106,
+cockpit-files 21, cockpit-machines 332, and cockpit-ostree 210:
+
+## Add cockpit/ws arm64 container
+
+The [cockpit webserver container image](https://quay.io/repository/cockpit/ws?tab=info) is now available for the arm64 architecture as well.
+
+_Thanks to Marvin Ruder for this contribution!_
+
+## Storage: Disk Self-Test error warnings
+
+The health card on the overview page now provides proactive warnings when a disk reports errors from its SMART self-test.
+
+![smart]({{ site.baseurl }}/images/339-overview-smart-warning.png)
+
+## Machines: The "shareable" attribute of disks is no longer modified by Cockpit
+
+By default, libvirt can attach a disk to multiple virtual machines, but if the disk allows writing, only a single one of these machines
+can be running at a given time. Writing to a disk concurrently from multiple VMs at the same time can easily lead to data corruption,
+and libvirt prevents this unless the "shareable" attribute of a disk is set. Previously, Cockpit would set this attribute by default
+and would thus invite data corruption. To avoid this, Cockpit no longer marks disks as "shareable" when attaching them to multiple VMs.
+
+Moreover, the "Edit attributes" dialog no longer allows setting the "shareable" attribute either.
+We now believe this attribute is too dangerous to be exposed in such an easy way. If you really need it,
+you can use "virt-xml" on the command line.
+Cockpit will show disks with the "shareable" attribute as "Concurrently writable" in the UI.
+
+## Try it out
+
+Cockpit 339, cockpit-podman 106, cockpit-files 21, cockpit-machines
+332, and cockpit-ostree 210 are available now:
+
+* [For your Linux system](https://cockpit-project.org/running.html)
+* [Cockpit Client](https://flathub.org/apps/details/org.cockpit_project.CockpitClient)
+
+* [Cockpit Source Tarball](https://github.com/cockpit-project/cockpit/releases/tag/339)
+* [Cockpit Fedora 42](https://bodhi.fedoraproject.org/updates/FEDORA-2025-b414ded6de)
+* [Cockpit Fedora 41](https://bodhi.fedoraproject.org/updates/FEDORA-2025-dc44e3ebf2)
+* [cockpit-podman Source Tarball](https://github.com/cockpit-project/cockpit-podman/releases/tag/106)
+* [cockpit-podman Fedora 42](https://bodhi.fedoraproject.org/updates/FEDORA-2025-33e26f7c12)
+* [cockpit-podman Fedora 41](https://bodhi.fedoraproject.org/updates/FEDORA-2025-e867161328)
+* [cockpit-files Source Tarball](https://github.com/cockpit-project/cockpit-files/releases/tag/21)
+* [cockpit-files Fedora 42](https://bodhi.fedoraproject.org/updates/FEDORA-2025-3136f15eb8)
+* [cockpit-files Fedora 41](https://bodhi.fedoraproject.org/updates/FEDORA-2025-332f1df14a)
+* [cockpit-machines Source Tarball](https://github.com/cockpit-project/cockpit-machines/releases/tag/332)
+* [cockpit-machines Fedora 42](https://bodhi.fedoraproject.org/updates/FEDORA-2025-ef270f0390)
+* [cockpit-machines Fedora 41](https://bodhi.fedoraproject.org/updates/FEDORA-2025-065f8865d6)
+* [cockpit-ostree Source Tarball](https://github.com/cockpit-project/cockpit-ostree/releases/tag/210)
+* [cockpit-ostree Fedora 42](https://bodhi.fedoraproject.org/updates/FEDORA-2025-cca579c4b9)
+* [cockpit-ostree Fedora 41](https://bodhi.fedoraproject.org/updates/FEDORA-2025-e28678da70)