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6.9.0-beta25 vs. -beta24 Summary: fixed emhttpd crash resulting from having NFS exported disk shares fixed issue where specifying 1 MiB partition alignment was being ignored (see 1 MiB Partition Alignment below) fixed spin-up/down issues ssh improvements (see SSH Improvements below) kernel updated from 5.7.7 to 5.7.8 added UI changes to support new docker image file handling - thank you @bonienl. Refer also to additional information re: docker image folder, provided by @Squid under Docker below. known issue: "Device/SMART Settings/SMART controller type" is ignored, will be fixed in next release Important: Beta code is not fully tested and not feature-complete. We recommend running on test servers only! Multiple Pools This features permits you to define up to 35 named pools, of up to 30 storage devices/pool. The current "cache pool" is now simply a pool named "cache". Pools are created and managed via the Main page. Note: When you upgrade a server which has a cache pool defined, a backup of config/disk.cfg will be saved to config/disk.cfg.bak, and then cache device assignment settings are moved out of disk.cfg and into a new file, config/pools/cache.cfg. If later you revert back to a pre-6.9 Unraid OS release you will lose your cache device assignments and you will have to manually re-assign devices to cache. As long as you reassign the correct devices, data should remain intact. When you create a user share, or edit an existing user share, you can specify which pool should be associated with that share. The assigned pool functions identically to current cache pool operation. Something to be aware of: when a directory listing is obtained for a share, the unRAID array disk volumes and all pools which contain that share are merged in this order: pool assigned to share disk1 : disk28 all the other pools in strverscmp() order. As with the current "cache pool", a single-device pool may be formatted with either xfs, btrfs, or reiserfs. A multiple-device pool may only be formatted with btrfs. A future release will include support for multiple "unRAID array" pools. We are also considering zfs support. Something else to be aware of: Suppose you have a 2-device btrfs pool. This will be what btrfs calls "raid1" and what most people would understand to be "mirrored disks". Well this is mostly true in that the same data exists on both disks but not necessarily at the block-level. Now suppose you create another pool, and what you do is unassign one of the devices from the existing 2-device btrfs pool and assign it to this new pool - now you have x2 single-device btrfs pools. Upon array Start you might understandably assume there are now x2 pools with exactly the same data. However this is not the case. Instead, when Unraid OS sees that a btrfs device has been removed from an existing multi-device pool, upon array Start it will do a 'wipefs' on that device so that upon mount it will not be included in the old pool. This of course effectively deletes all the data on the moved device. 1 MiB Partition Alignment We have added another partition layout where the start of partition 1 is aligned on 1 MiB boundary. That is, for devices which present 512-byte sectors, partition 1 will start in sector 2048; for devices with 4096-byte sectors, in sector 256. This partition type is now used for all non-rotational storage (only). It is not clear what benefit 1 MiB alignment offers. For some SSD devices, you won't see any difference; others, perhaps big performance difference. LimeTech does not recommend re-partitioning an existing SSD device unless you have a compelling reason to do so (or your OCD just won't let it be). To re-partition a SSD it is necessary to first wipe out any existing partition structure on the device. Of course this will erase all data on the device. Probably the easiest way to accomplish this is, with array Stopped, identify the device to be erased and use the 'blkdiscard' command: blkdiscard /dev/xxx # for exmaple /dev/sdb or /dev/nvme0n1 etc) WARNING: be sure you type the correct device identifier because all data will be lost on that device! Upon next array Start the device will appear Unformatted, and since there is now no partition structure, Unraid OS will create it. Language Translation A huge amount of work and effort has been implemented by @bonienl to provide multiple-language support in the Unraid OS Management Utility, aka, webGUI. There are several language packs now available, and several more in the works. Thanks to @Squid, language packs are installed via the Community Applications plugin - look for a new category entitled Language. Note: Community Applications must be up to date to install languages. See also here. Each language pack exists in public Unraid organization github repos. Interested users are encouraged to clone and issue Pull Requests to correct translations errors. Language translations and PR merging is managed by @SpencerJ. Linux Kernel Upgraded to 5.7. These out-of-tree drivers are currently included: QLogic QLGE 10Gb Ethernet Driver Support (from staging) RealTek r8125: version 9.003.05 (included for newer r8125) HighPoint rr272x_1x: version v1.10.6-19_12_05 (per user request) Note that as we update the Linux kernel, if an out-of-tree driver no longer builds, it will be omitted. These drivers are currently omitted: Highpoint RocketRaid r750 (does not build) Highpoint RocketRaid rr3740a (does not build) Tehuti Networks tn40xx (does not build) If you require one of these drivers, please create a Bug Report and we'll spend some time looking for alternatives. Better yet, pester the manufacturer of the controller and get them to update their drivers. Base Packages All updated to latest versions. In addition, Linux PAM has been integrated. This will permit us to implement 2-factor authentication in a future release. Docker Updated to version 19.03.11 It's now possible to select different icons for multiple containers of the same type. This change necessitates a re-download of the icons for all your installed docker applications. A delay when initially loading either the dashboard or the docker tab while this happens is to be expected prior to the containers showing up. We also made some changes to add flexibility in assigning storage for the Docker engine. First, 'rc.docker' will detect the filesystem type of /var/lib/docker. We now support either btrfs or xfs and the docker storage driver is set appropriately. Next, 'mount_image' is modifed to support loopback formatted either with btrfs or xfs depending on the suffix of the loopback file name. For example, the file name ends with ".img", as in "docker.img" then we use mkfs.btrfs. If file name ends with "-xfs.img", as in "docker-xfs.img" then we use mkfs.xfs. We also added the ability to bind-mount a directory instead of using a loopback. If file name does not end with ".img" then code assumes this is the name of directory (presumably on a share) which is bind-mounted onto /var/lib/docker. For example, if "/mnt/user/system/docker/docker" then we first create, if necessary the directory "/mnt/user/system/docker/docker". If this path is on a user share we then "dereference" the path to get the disk path which is then bind-mounted onto /var/lib/docker. For exmaple, if "/mnt/user/system/docker/docker" is on "disk1", then we would bind-mount "/mnt/disk1/system/docker/docker". Caution: the share should be cache-only or cache-no so that 'mover' will not attempt to move the directory, but the script does not check this. Additional information from user @Squid: Virtualization libvirt updated to version 6.4.0 qemu updated to version 5.0.0 In addition, integrated changes to System Devices page by user @Skitals with modifications by user @ljm42. You can now select PCI devices to isolate from Linux upon boot simply by checking some boxes. This makes it easier to reserve those devices for assignment to VM's. Note: If you had the VFIO-PCI Config plugin installed, you should remove it as that functionality is now built-in to Unraid OS 6.9. Refer also @ljm42's excellent guide. In a future release we will include the NVIDIA and AMD GPU drivers natively into Unraid OS. The primary use case is to facilitate accelerated transcoding in docker containers. For this we require Linux to detect and auto-install the appropriate driver. However, in order to reliably pass through an NVIDIA or AMD GPU to a VM, it's necessary to prevent Linux from auto-installing a GPU driver for those devices upon boot, which can be easily done now through System Devices page. Users passing GPU's to VM's are encouraged to set this up now. "unexpected GSO errors" If your system log is being flooded with errors such as: Jun 20 09:09:21 Tower kernel: tun: unexpected GSO type: 0x0, gso_size 31, hdr_len 66 You need to edit each VM and change the model type for the Ethernet bridge from "virtio" to "virtio-net". In most cases this can be accomplished simply by clicking Update in "Form View" on the VM Edit page. For other network configs it may be necessary to directly edit the xml. Example: <interface type='bridge'> <mac address='xx:xx:xx:xx:xx:xx'/> <source bridge='br0'/> <model type='virtio-net'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> SSH Improvements There are changes in /etc/ssh/sshd_conf to improve security (thanks to @Mihai and @ljm42 for suggestions): only root user is permitted to login via ssh (remember: no traditional users in Unraid OS - just 'root') non-null password is now required non-root tunneling is disabled In addition, upon upgrade we ensure the 'config/ssh/root' directory exists on the USB flash boot device; and, we have set up a symlink: /root/.ssh to this directory. This means any files you might put into /root/.ssh will be persistent across reboots. Note: if you examine the sshd startup script (/etc/rc.d/rc.sshd), upon boot all files from the 'config/ssh' directory are copied to /etc/ssh (but not subdirs). The purpose is to restore the host ssh keys; however, this mechanism can be used to define custom ssh_conf and sshd_conf files (not recommended). Other AFP support has been removed. Numerous other Unraid OS and webGUI bug fixes and improvements. Version 6.9.0-beta25 2020-07-12 Linux kernel: version 5.7.8 Management: fix emhttpd crash resulting from exporting NFS disk share(s) fix non-rotational device partitions were not actually being 1MiB aligned dhcpcd: ipv6: use slaac hwaddr instead of slaac private docker: correct storage-driver assignemnt logic ssh: allow only root user, require passwords, disable non-root tunneling ssh: add /root/.ssh symlink to /boot/config/ssh/root directory syslog: configure to also listen on localhost udp port 514 webgui: Added btrfs info for all pools in diagnostics webgui: Docker: allow BTRFS or XFS vdisk, or folder location webgui: Multi-language: Fixed regression error: missing indicator for required fields webgui: Dashboard: fix stats of missing interface