![]() Just without the BIOS POST and the bootloader and kernel parts. Then system continues to boot along with starting all its services as usual. … and you are going the route similar to typing shutdown now on a running system. Takes about 9-10 seconds on my 11 years old ThinkPad W520 so it may be even faster on your more up to date system. You type beadm reroot BENAME in the terminal and FreeBSD reroots into that BE without reboot. Usage of this new feature is quite simple. I will add that updated version to the FreeBSD Ports tree later along with updated man page later. The new upgraded beadm(8) is available from its home at GitHub page here: On the screenshot above I use the latest FreeBSD 13.1-BETA1 but it works the same on other production FreeBSD releases such as 12.3-RELEASE or 13.0-RELEASE. It will definitely have less impact in virtual machines as they reboot quite fast but imagine saved time on a server class physical machine with about 10 minutes lost for BIOS POST messages and initialization … or personal desktop/laptop GELI encrypted system without the need to type in again the GELI password to decrypt it after reboot. With the new reroot option of beadm(8) you will tell FreeBSD to reroot your running kernel into specified BE. Openzfs conference update#Especially when you just update the packages with pkg(8) command. This created a need to reboot(8) but not anymore. The other way was to create new separate BE (while not touching the running one) and then mount it and update that new BE and reboot into it later. Then you can use checkrestart(1) to verify which processes should be restarted because either binaries or libraries has been updated. You can create new BE (as a backup world that you can get back to) and update the running system. There are two types of update strategies when using the ZFS Boot Environments. How can reroot be useful here? It will save you a lot of time when you did not updated the kernel. ( r293744) (Sponsored by The FreeBSD Foundation) Openzfs conference full#The initial implementation of “reroot” support has been added to the reboot(8) utility, allowing the root filesystem to be mounted from a temporary source filesystem without requiring a full system reboot. This feature is implemented in the reboot(8) command with -r argument.Īs we can read in the FreeBSD 10.3-RELEASE Release Notes page: The loaded and running kernel stays the same of course – but this is the only downside. What is reroot? Its the ability to switch to other root filesystem without the need for full system reboot. This is about to change … Reroot Instead Reboot I do not know any downsides of ZFS Boot Environments but if you would stick a gun into my head and make me find one – I would say that you still have to reboot(8) to change to the other BE. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |