Re: [BackupPC-users] Rebuilding a backuppc installation

for normal-ish filesystem usage, ZFS is ram-hungry but not ram-insane. Just don't turn on deduplication and you'll be fine with a few GB of RAM.

More importantly though, it's unlikely that you'll be able to transfer your pool without (temporarily) having enough disk to store two copies. You might dork around with pulling out one of your raid5 disks as the start of your new zfs pool, but that is risky. make sure to do a scrub on the raid5 before you do that.

It sounds like an awful lot of hassle just to be rid of systemd. I am not a fan either, but the "big four" linux distros all switched to it - unless you plan to give up on linux altogether you might as well get used to it.

Pasi Koivisto

March 14, 2016 at 8:48 AM

It might be possible to setup Linux with ZFS, create a zpool (1 disk might be enough for the transfer) and copy over the bpc pool. Export that zpool, setup FreeBSD and import the zpool.

Make sure you have plenty of ram as ZFS works better the more ram it has.

/P

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Brad Alexander

March 13, 2016 at 9:11 PM

I'm getting kinda frustrated with the entire systemd thing on linux,. So what I'm wondering is what the procedure is (if it is possible) to convert the OS from Linux to FreeBSD, and converting the base filesystem to ZFS, preferably without losing my pool. The hardware in question is a Dell PE1850. If I'm going to use ZFS, I will convert the RAID 5 array to JBOD. Any other sage advice from folks running backuppc on FreeBSD?

As I type this, I suspect I am going to lose my pool, so I should probably archive the older backups. Is there any way to re-import them into the pool after the conversion is done?

Thanks,
--b

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Dan Pritts
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University of Michigan
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