Royce I really like this. I will dd an image onto another stick and update it with cron and rsync. Its a plan!
Thanks man... On Mon, Mar 26, 2012 at 9:49 AM, Royce Souther <osgn...@gmail.com> wrote: > You can use dd to read a mounted system but not write to it. Any files > being changed on the mounted one would end up corrupted on the none mounted > one. After dd has been run the first time rsync would work better. Mounting > the backup stick in /mnt and then using rsync to clone all the changes > ignoring /tmp /proc /var/log would be better. > > I am using rsync to keep some virtual servers in sync for a client that > cannot afford a more common solution. It works great for them, if the main > server dies and takes down the virtual image the backup server can switch > cloned image and have their office backup and running in 5 minutes and only > a few files are long from the previous hour or so. > > > On Mon, Mar 26, 2012 at 9:23 AM, Dan Graham <graha...@gmail.com> wrote: > >> cron and dd with multiple sticks is a cool idea but can you use dd to >> image a mounted filesystem? I've never tried it. >> >> Thanks again, Dan >> >> >> On Mon, Mar 26, 2012 at 6:52 AM, Royce Souther <osgn...@gmail.com> wrote: >> >>> /sys should not be needed in a server unless you have a goofy NIC that >>> needs proprietary firmware ROM to work. I remove it from my servers without >>> issue. >>> /proc does not actually exist on the physical file system. It is a >>> special mount that maps to memory inside the running kernel and lets you >>> see what the kernel is doing but no data is ever written to disk >>> /var/log can be redirected to a different log server on the network and >>> that is a good way to find out what happens when the USB / root boot server >>> dies >>> /tmp can be mounted to a RAM disk >>> >>> And with those changes there should be very few write cycles to the USB >>> memory stick and a quality thumb drive it could last many years. You can >>> have a second or even a third USB stick connected to the USB ports and you >>> can use dd and a cron script to once a day keep the other sticks up to date >>> with the main boot stick, no need for RAID1 and IPMI will let you switch if >>> the main stick dies. >>> >>> Thanks for the idea. I am going to try this. I will let you know how it >>> goes. >>> >>> >>> On Sun, Mar 25, 2012 at 9:03 PM, Dan Graham <graha...@gmail.com> wrote: >>> >>>> It's just like an external usb port on the back of the mainboard but >>>> its located near the sata ports. I use a cheap usb stick for boot root and >>>> have not bothered to worry about /sys /proc /var/log etc. I used to symlink >>>> /var/log etc to a physical disk. Last couple of times I just got lazy and >>>> did not bother. My last stick on my old Supermicro board (with the same >>>> feature) went for a year and a half without intervention, running full >>>> read/write 24/7. Regardless I feel very confident that no matter how you >>>> deploy this board it will make you happy. To install on usb stick just make >>>> sure its plugged in, setup bios to boot from it and install as you would >>>> normally from CD or use IPMI across the network from your workstation with >>>> an iso image (This is just pure "GEEK SEX"), less the swap of course. (Just >>>> use lottsa RAM) :) >>>> >>>> Seriously do this and feel the love.... >>>> >>>> >>>> On Sun, Mar 25, 2012 at 7:50 PM, Royce Souther <osgn...@gmail.com>wrote: >>>> >>>>> Is it any different then a normal USB port out the back? Other then a >>>>> port out the back is in danger of having someone pull the stick out. >>>>> >>>>> Can you make that USB port a read-only drive and have the system use >>>>> RAM for a read-write / root like a unisonfs? I would not want the memory >>>>> stick to die from to many write cycles. >>>>> >>>>> Do you have to do anything special with OS to install it on the memory >>>>> stick? >>>>> >>>>> Supper easy OS upgrades, just build a new thumb drive at your desk and >>>>> swap it at reboot. >>>>> >>>>> >>>>> On Sun, Mar 25, 2012 at 6:35 PM, Dan Graham <graha...@gmail.com>wrote: >>>>> >>>>>> Oh and I forgot the coolest part. It has a USB port integrated right >>>>>> on the main board which is where I install the boot/root filesystem. It >>>>>> lets me use all the sata ports for /home. ... :) >>>>>> >>>>>> Cya, Dan >>>>>> >>>>>> >>>>>> On Sun, Mar 25, 2012 at 6:30 PM, Dan Graham <graha...@gmail.com>wrote: >>>>>> >>>>>>> Hi Royce, >>>>>>> >>>>>>> I recently acquired one of these: It has dual gig Ethernet (Intel) >>>>>>> an IPMI port for remote headless access, etc. For $179 it is just >>>>>>> amazing. >>>>>>> I put a Sandy Bridge quad core Xeon on it for $240 and run a number of >>>>>>> KVM >>>>>>> VMs on it and it just flies. CPU power consumption maxes out at 80 >>>>>>> Watts, >>>>>>> and idles at 20 or less. You could do far worse than this one. >>>>>>> All the best, Dan >>>>>>> >>>>>>> Mainboard: >>>>>>> >>>>>>> http://www.newegg.ca/Product/Product.aspx?Item=N82E16813182262&nm_mc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text-_- >>>>>>> >>>>>>> Xeon CPU: >>>>>>> >>>>>>> http://www.newegg.ca/Product/Product.aspx?Item=N82E16819115083&nm_mc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text-_- >>>>>>> >>>>>>> >>>>>>> On Sun, Mar 25, 2012 at 11:53 AM, Jamie Furtner <ja...@furtner.ca>wrote: >>>>>>> >>>>>>>> On 2012-03-25 8:52 AM, Royce Souther wrote: >>>>>>>> >>>>>>>>> I am trying to put together a file server and trying to get as >>>>>>>>> many SATA ports as I can. I found a motherboard I like but it only >>>>>>>>> has 6 >>>>>>>>> SATA ports. It also has PCI-Ex8 and PCI-Ex16 slots. I want to add a >>>>>>>>> SATA >>>>>>>>> card. Supermicro makes an 8 port SATA card that is PCI-Ex4. >>>>>>>>> >>>>>>>>> Can I use a PCI-Ex4 cards in a PCI-Ex8 or PCI-Ex16 slot? If so >>>>>>>>> then I can have 22 SATA drives in this box. >>>>>>>>> >>>>>>>>> Yes, you can use a card that uses a smaller number of PCIe >>>>>>>> channels in a larger slot - the reverse is not true of course. The card >>>>>>>> won't be any faster than if it were plugged into its native slot but it >>>>>>>> works correctly. >>>>>>>> >>>>>>>> This means you can use a x1 card in a x1, x4, x8 or x16 slot, a x4 >>>>>>>> card in a x4, x8, or x16 slot and so forth. >>>>>>>> >>>>>>>> Jamie >>>>>>>> >>>>>>>> -- >>>>>>>> Jamie Furtner ja...@furtner.ca >>>>>>>> "I aim to misbehave" >>>>>>>> - Malcom Reynolds (Serenity movie) >>>>>>>> "It's not safe... >>>>>>>> "For them." >>>>>>>> - River Tam (Serenity movie) >>>>>>>> >>>>>>>> >>>>>>>> ______________________________**_________________ >>>>>>>> clug-talk mailing list >>>>>>>> clug-talk@clug.ca >>>>>>>> http://clug.ca/mailman/**listinfo/clug-talk_clug.ca<http://clug.ca/mailman/listinfo/clug-talk_clug.ca> >>>>>>>> Mailing List Guidelines >>>>>>>> (http://clug.ca/ml_guidelines.**php<http://clug.ca/ml_guidelines.php> >>>>>>>> ) >>>>>>>> **Please remove these lines when replying >>>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> One thing you can be sure of. If you throw a loaded gun in a monkey >>>>>>> cage, something bad is going to happen. >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> One thing you can be sure of. If you throw a loaded gun in a monkey >>>>>> cage, something bad is going to happen. >>>>>> >>>>>> _______________________________________________ >>>>>> clug-talk mailing list >>>>>> clug-talk@clug.ca >>>>>> http://clug.ca/mailman/listinfo/clug-talk_clug.ca >>>>>> Mailing List Guidelines (http://clug.ca/ml_guidelines.php) >>>>>> **Please remove these lines when replying >>>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> Easy, fast GUI development. >>>>> http://PerlQt.wikidot.com >>>>> >>>>> _______________________________________________ >>>>> clug-talk mailing list >>>>> clug-talk@clug.ca >>>>> http://clug.ca/mailman/listinfo/clug-talk_clug.ca >>>>> Mailing List Guidelines (http://clug.ca/ml_guidelines.php) >>>>> **Please remove these lines when replying >>>>> >>>> >>>> >>>> >>>> -- >>>> One thing you can be sure of. If you throw a loaded gun in a monkey >>>> cage, something bad is going to happen. >>>> >>>> _______________________________________________ >>>> clug-talk mailing list >>>> clug-talk@clug.ca >>>> http://clug.ca/mailman/listinfo/clug-talk_clug.ca >>>> Mailing List Guidelines (http://clug.ca/ml_guidelines.php) >>>> **Please remove these lines when replying >>>> >>> >>> >>> >>> -- >>> Easy, fast GUI development. >>> http://PerlQt.wikidot.com >>> >>> _______________________________________________ >>> clug-talk mailing list >>> clug-talk@clug.ca >>> http://clug.ca/mailman/listinfo/clug-talk_clug.ca >>> Mailing List Guidelines (http://clug.ca/ml_guidelines.php) >>> **Please remove these lines when replying >>> >> >> >> >> -- >> One thing you can be sure of. If you throw a loaded gun in a monkey cage, >> something bad is going to happen. >> >> _______________________________________________ >> clug-talk mailing list >> clug-talk@clug.ca >> http://clug.ca/mailman/listinfo/clug-talk_clug.ca >> Mailing List Guidelines (http://clug.ca/ml_guidelines.php) >> **Please remove these lines when replying >> > > > > -- > Easy, fast GUI development. > http://PerlQt.wikidot.com > > _______________________________________________ > clug-talk mailing list > clug-talk@clug.ca > http://clug.ca/mailman/listinfo/clug-talk_clug.ca > Mailing List Guidelines (http://clug.ca/ml_guidelines.php) > **Please remove these lines when replying > -- One thing you can be sure of. If you throw a loaded gun in a monkey cage, something bad is going to happen.
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