On 2017-07-20, at 1:22 PM, Macs R We <macs...@macsrwe.com> wrote: > Number one, a bigger hub would probably be the cheapest and most efficient > way out of your problem. > > Number two, I can't imagine there's anything magic about an Apple optical > that requires it to be directly connected, as long as you have a powered hub, > which you want to have anyway. Sure, possibly you won't be able to boot from > it, but who does that anymore?
Actually, attempting to plug it into a hub does bring up a "This drive must be directly connected to the computer" message. Apparently, the computer will provide more power than a normal (even powered) hub will when a device asks in an Apple manner. And yes, a bigger hub is an answer. I did not know of bigger ones. I've only ever seen 4-port USB hubs being sold, and thought that was some limit of the protocol (figured a two-bit enumeration at some point in the connection protocol.) > >> On Jul 20, 2017, at 1:12 PM, Michael <keybou...@gmail.com> wrote: >> >> >> On 2017-07-20, at 12:51 PM, Andy Ringsmuth <a...@andyring.com> wrote: >> >>>> >>>> On Jul 20, 2017, at 12:31 PM, Michael <keybou...@gmail.com> wrote: >>>> >>>> So one of my partitions filled up too soon :-). It's on a 4 TB drive, and >>>> I figured I'd shrink the time machine backup on the same disk to make more >>>> room. >>>> >>>> Except that I found that the partition layout put the time machine >>>> partition at the front of the drive, and the data partition at the end of >>>> the drive. >>>> >>>> So my first thought was to look at core storage and logical volumes. The >>>> thinking was to turn the existing data partition into a logical volume, >>>> and then add a second logical volume to it -- resizing the data without >>>> having to copy it. >>>> >>>> I can't find anything in diskutil's man page to describe how to add a new >>>> physical volume to a logical volume. >>>> >>>> A "workable" (but slow) solution is to just delete the TM (3 tb), put a >>>> copy of the data at the front of the drive, and make a new smaller TM at >>>> the end. That would work, but copying a full TB of data on the same >>>> spindle is slow. (Not a big deal, just an annoyance). >>>> >>>> My question is: What can be done with core storage? How can you add new >>>> physical volumes to existing partitions? >>>> >>>> Perhaps more usefully / generally: Lets say you had a large, 4 TB drive >>>> that you knew you were going to have different data stored on. You break >>>> it up into 8 1/2 TB partitions. You want to be able to expand two >>>> different logical volumes/partitions as needed, not knowing ahead of time >>>> which one would need how much of the space. >>>> >>>> How would something like this be done with core storage, or is this not >>>> what core storage is intended for? >>> >>> Michael, >>> >>> Never, never, ever, use Time Machine on a partitioned disk. It defeats the >>> whole purpose of having a backup. If Time Machine is backing up other items >>> on that same physical disk, your backup is basically worthless. If the disk >>> dies, you lose your original data and the backup. >>> >>> Disks are cheap. You can get 4TB for around a hundred bucks. Get one >>> dedicated disk for Time Machine and for absolutely positively nothing else. >>> >>> Then, go from there on the rest of your partitions. >> >> Ok, so I have a machine with two USB ports. One has a hub. One has my backup >> drive. One has my DVD drive. >> >> So I'm already having to swap things around -- if I plug in the DVD drive >> (Apple's official drive, won't work in a hub, has to be connected directly), >> I have to move the external to the hub -- which means any terminal window on >> there, or anything using stuff on there, gets clobbered. >> >> Another drive? How do I hook it up? I'm already filling the hub, and having >> to plug/unplug things as I go. >> >> The primary purpose of the time machine drive is to hold a backup copy of >> what's on the internal SSD inside the laptop. The secondary purpose is to >> have space for additional stuff. The drive is pretty much only videos -- >> either older videos that I'm finished with, or low-priority footage that >> I'll probably discard instead of using, or archival copies of stuff uploaded >> to youtube; or videos to watch that I've downloaded off the internet. >> >> If my internal drive fails, I have a time machine. >> If my external drive fails, it's painful, but I have an internet backup >> (backblaze) that I can restore from, and nothing on that drive is time >> critical. >> >> And yea, "Core" storage hasn't been used in a few decades, but this is ... >> (dare I say it?) _AppleCore_ :-). >> >> (OK, if you don't know your minecraft mods, you won't know "Applecore" :-). >> >> --- >> Entertaining minecraft videos >> http://YouTube.com/keybounce >> >> _______________________________________________ >> MacOSX-talk mailing list >> MacOSX-talk@omnigroup.com >> http://www.omnigroup.com/mailman/listinfo/macosx-talk > --- Entertaining minecraft videos http://YouTube.com/keybounce _______________________________________________ MacOSX-talk mailing list MacOSX-talk@omnigroup.com http://www.omnigroup.com/mailman/listinfo/macosx-talk
