05-26-2013 12:08 PM
01-12-2014 02:35 PM
My striped LVM data disks (currently 2x 2TB HDDs) hold files ranging from ~250KB (small jpegs) to ~20MB (RAW camera files) to ~60-80MB (TIFF). It seems that write performance doesn't suffer to bad when using LVM versus RAID0.
I think we both have totally different usage patterns:
1. Yours, from what I gathered through another post of yours, is that you run a business and replace/sell hardware regularly to fit new needs, or to make sure you don't run into troubles with old hardware.
Also, it seems that running multiple OSes will require your disk I/O to cope equally well with small and large files, and it's easy to see how you and your business benefits from a well-performing virtualized Windows test bench environment based on Xen.
2. My PC platform grows "naturally". When I built my current PC, I reused most of my drives from the old PC and added only a SSD (for Linux OS and the Windows guest OS) and another HDD for data (the second HDD in the striped LVM volume). In the meantime I had to add another HDD.
The advantage of LVM - to me - is that I can add HDDs and grow file systems when needed. NOT using RAID frees me from the need to get identical disks. So my PC holds a 120GB SSD, a 500GB drive, a 1TB drive, and 3x 2TB drives. Of course if I were to buy disks now I would go for 3TB drives (best price/performance ratio and - by now - mature technology).
The only thing that I'm not yet settled on is the backup method(s) - currently I use several different methods for different data and purposes: Backup on import of photos (Lightroom functionality), internal backup of OS and VM using LVM snapshot with dd and pigz, backup to external HDDs using the disk's backup utility under Windows, rsync-type backup to my media PC. It's a bit of a mess, I admit.
Considering the performance and ease of use, I will probably standardize on rsync for data backup (I use luckybackup with ssh for that), and move some disks to my media PC/server in the cellar.
Me, I feel like a moron...Thanks @Nodens! 🙂 Actually, I've played with Xen before, never got it running right, so I may have to try it again, just to see if I can get it working, since it looks like such a great idea. However, I'm on a laptop, so it may not be so useful. The other thing I may have to play with is LINUX on my Android phone...
01-14-2014 05:46 PM
Years ago Xen was much harder to use. Nowadays Zyg, it's very easy specially for an experienced Linux user such as yourself and with PCI passthrough (on a laptop that features an IGP as well) you can forget ever booting Windows on baremetal again 😉
01-11-2014 01:55 PM
01-11-2014 04:13 PM
01-12-2014 02:07 AM
01-18-2014 04:59 PM
01-19-2014 03:22 AM
Today I put Precise Puppy 5.7.1 on a 16 GB SanDisk Extreme 3.0 that I found for $28 @ B&H and I have to say that I am thoroughly impressed with the speed. It loads to RAM in seconds and afterward everything is nearly instantaneous. We'll see if I'm still impressed overall after I drive it around for a couple of weeks. The jury is still out, but I really like the idea of being able to carry everything I might need around with me in my pocket if I want to.
01-19-2014 07:19 AM
I hadn't thought about using Puppy, but due to its smaller size, I might. I pretty much always have a USB flash drive with LINUX on it so that I can boot it wherever I go, but it takes a while to load, probably due to the larger distro coupled with the slower USB interface.
01-19-2014 12:28 PM
It's rockin' so far. Timed it this morning...16 seconds to load, but I don't know how much of that is due to the 3.0 flash drive. 2.0 might take a couple seconds more, but that wouldn't be anything to really bitch about. Once it's in RAM, it's freaky fast on my system. It's definitely worth giving a whirl. I like playing with new toys though and after a couple of years of using various distros I'm still not set in my Linux ways so maybe it's just worth it to me. 😉
01-20-2014 10:31 AM