Is it possible to have a SATA DOM boot device mirrored to a USB stick?
i like the idea of using two usb flash drives mirrored for booting - this my seem a silly question - if i have two identical sandisk flash drives how do i know which one to replace if there is a problem ? i assume they will have the same name in the bios.
if i removed the good one and booted with a bad one would this cause a big problem ?
that's two silly questions
You can't. Boot scrubs can only be set to "every N days", right in the Boot screen. The boot scrub is a totally different part of the FreeNAS system than the datapool scrubs. We have been round and round and round with this with the devs, and this is how they want it for some reason.Questions about scheduling a scrub for the boot device. I am configuring my scheduled SMART tests and scrubs. I wanted to schedule a scrub of the boot device on the 1 and 16 of each month... but I cannot seem to create a scrub on a schedule for the boot device (from the Web GUI).
What problem is it that you're trying to solve?I found another thread and plan to configure a cron task to run the boot scrub on a schedule. Thanks, I will test this out to see how it works.
What problem is it that you're trying to solve?
Scrubbing the boot pool takes literally a couple minutes. You can set it for anything from 1 day apart, to monthly, whatever. In what way are you finding this insufficient to your needs, out of academic curiosity?
I found another thread and plan to configure a cron task to run the boot scrub on a schedule. Thanks, I will test this out to see how it works.
That does meet my practical needs just fine. I am simply trying to follow a schedule for the scrubs of boot device and pool because I sent scheduled emails. Would like to have the scrubs run and then send the scheduled emails.
I'm with you. As became abundantly clear when we cleared up the "mountroot" problem, the booting process actually has at least two important elements:
1) The first part is the pre-operating-system part, where the boot sector of the USB are read, and some amount of bootstrapping of some kind is done so that you can get to GRUB.
2) The second part, of course, is the mounting of the remaining system root as a zpool.
I don't see how having multiple devices helps you for the FIRST part. i.e., if your drive is corrupted in the boot sectors in the pre-operating-system portion of the process, it has no conception of a second (or third, or whatever) device, and so on and forth, so you'd be screwed there. So there's nothing you can do. But that's always been a risk on any boot device.
However, the second part, once the pair (or whatever) of devices mount in the FreeBSD context as a zpool, then you get all the advantages.
So I see:
No increase in the disadvantages/risk, and
Some increase in the advantages/win.
So that's a net win. So I'm a fan.
Do you see anything differently?