On Wed, Jun 19, 2013 at 1:20 PM, Rich Freeman <ri...@gentoo.org> wrote: > On Wed, Jun 19, 2013 at 3:21 PM, Mark Knecht <markkne...@gmail.com> wrote: >> >> Is 'using ACLs' one of those things that if you don't know then you >> are not? I just run basic Gentoo here. All installs done as per the >> install guide. I don't even use LVM or anything fancy. (Which is >> likely part of why I'm having to reconfigure as much as I am but so be >> it.) > > Gentoo can potentially make use of them if you're using POSIX > capabilities, but I think that has to be enabled by USE flag or > FEATURE. I think you might also have to enable them in fstab (and the > kernel as well, though that is likely enabled by default). Chances > are you'd know if you were using them, and it would only apply to > stuff installed by portage (generally binaries). Oh, and using POSIX > capabilities is a good thing (less suid root binaries). > > One thing to mention - I'm not sure how much data you're talking > about, but if it is a lot and downtime is a concern you could probably > get creative and avoid some copying. You could copy the files onto an > LVM vg, and then after your RAID is set up you could move the logical > volume onto your RAID, which is an online operation. (Ie set up your > USB drive as LVM, copy the files over, adjust your mounts so that the > USB drive is mounted where you want the files, and at this point > they're in production. Then get your RAID set up, add it to the > volume group, and pvmove the USB drive so that it gets moved to your > RAID. Then remove the USB drive from your volume group and you're in > the final config, with no further need to adjust mountpoints since > they're already pointed to LVM.) I've done a lot of messing around > with online migrations of RAID and LVM - quite handy when you have > lots of stuff like mythtv recordings that you don't want to have > offline backups of. > > Rich >
Interesting info Rich. Thanks. Approximately 250GB involved. Not worried about downtime. The data is all Windows VMs which I use for stock & futures trading. Only need the machine back up by tomorrow morning. Also, I've never used LVM so for an afternoon project it's unlikely I'd be successful going that direction I think. The second USB backup drive is about 50% done so I should be able to start working on reconfiguring the RAID in about an hour and hopefully be back up and running by 5PM if things go well. Cheers, Mark
