Hi Anders, thanks for your report! It seems the issue could lie in the initramfs-tools package not being able to recognize the need of ZFS if MODULES=dep is used - in the kdump initrd, we restrict the modules included to the needed subset, in order to make it smaller and consume less memory from the crashkernel reserved range. The way to achieve that is set the config file for the kdump initrd to make use of MODULES=dep directive.
I'd like to ask some testing from you, so we can verify this theory. Please run the following commands as root user: ls -lh /var/lib/kdump/initrd.img* kdump-config unload rm -f /var/lib/kdump/initrd.img* sed -i 's/MODULES=dep/MODULES=most/g' /etc/kernel/postinst.d/kdump-tools kdump-config load ls -lh /var/lib/kdump/initrd.img* The first command will show you the current kdump initrd images you have, then next commands delete them and recreate one for the current kernel, but using "MODULES=most" to include a bigger set of modules in the kdump initrd. The last command will show the newly created initrd size, please be sure it is bigger than the one you deleted. After that, try a kdump and let's see if it works! Cheers, Guilherme -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1913639 Title: linux-crashdump is not capable of mounting zfs root pools Status in linux package in Ubuntu: Confirmed Bug description: I could not get any crash logs after using this package. I tried using it and triggering a crash from a terminal. The alternate kernel boots successfully, but the initrd for linux-crashdump is not capable of loading my rpool. running: linux-crashdump:amd64 5.4.0.64.67 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-crashdump:amd64 (not installed) ProcVersionSignature: Ubuntu 5.4.0-65.73-generic 5.4.78 Uname: Linux 5.4.0-65-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu27.14 Architecture: amd64 CasperMD5CheckResult: skip CurrentDesktop: KDE Date: Thu Jan 28 20:15:19 2021 InstallationDate: Installed on 2019-08-15 (532 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) IwConfig: eno1 no wireless extensions. lo no wireless extensions. MachineType: MSI MS-7885 ProcFB: 0 amdgpudrmfb ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_fnpezh@/vmlinuz-5.4.0-65-generic root=ZFS=rpool/ROOT/ubuntu_fnpezh ro usbcore.autosuspend=-1 quiet splash intel_iommu=on iommu=pt vfio-pci.ids=10de:1b81,10de:10f0,1b21:1242 video=efifb:off,vesafb=off,simplefb=off nouveau.modeset=0 rd.driver.blacklist=nouveau,nvidia,nvidia_uvm,nvidia_drm,nvidia_modeset crashkernel=2096M-:2096M vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-5.4.0-65-generic N/A linux-backports-modules-5.4.0-65-generic N/A linux-firmware 1.187.8 RfKill: 0: hci0: Bluetooth Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: Upgraded to focal on 2020-04-22 (281 days ago) dmi.bios.date: 06/15/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1.E0 dmi.board.asset.tag: Default string dmi.board.name: X99A SLI PLUS(MS-7885) dmi.board.vendor: MSI dmi.board.version: 1.0 dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: MSI dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.E0:bd06/15/2018:svnMSI:pnMS-7885:pvr1.0:rvnMSI:rnX99ASLIPLUS(MS-7885):rvr1.0:cvnMSI:ct3:cvr1.0: dmi.product.family: Default string dmi.product.name: MS-7885 dmi.product.sku: Default string dmi.product.version: 1.0 dmi.sys.vendor: MSI modified.conffile..etc.default.apport: # set this to 0 to disable apport, or to 1 to enable it # you can temporarily override this with # sudo service apport start force_start=1 enabled=0 mtime.conffile..etc.default.apport: 2020-03-23T10:46:45.197962 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1913639/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
