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Unable to install grub to server
by Jenny Hopkins 19 Jun '15

19 Jun '15

Hi all, I'd be grateful for some help getting my server booting again. It's running debian jessie, with software RAID and LVM, running xen (or was). Yesterday one of the disks failed, so I ordered another, and, when it arrived today, removed the dead one from the array, put the new disk in, and.....landed at the grub rescue prompt. So I booted up into a rescue disk, assembled the RAID, mounted the root on /mnt, and did a chroot. Running install-grub on the disk (/dev/sdb) gave me this error: warning: your core.img is unusually large. It won't fit in the embedding area. error: embedding is not possible, but this is required for RAID and LVM install. So I looked at the partition table. I have two partitions, /dev/sdb1 and /dev/sdb2. The latter is nearly 1TB, and is the root. Both are of type 'linux raid autodetect'. /dev/sdb1 started at 63, so I deleted this partition, created a new one as type linux raid autodetect, and it was automatically assigned the start of 2048. Then I ran grub install again, calling the raid and ext2 and lvm modules, but now I keep getting the error grub-install: error: unknown filesystem I'm not entirely sure what I'm actually doing here....been searching for help for hours. I found one page that suggested grub2 gets confused by a single disk in an array. Here's the current partition table: Device Boot Start End Sectors Size Id Type /dev/sdb1 2048 996029 993982 485.4M fd Linux raid autodetect /dev/sdb2 * 996030 1915060454 1914064425 912.7G fd Linux raid autodetect /boot is part of the root on /dev/sdb2 rather than a separate lvm one. I'm not entirely sure how it even managed to boot before, but I only had the /dev/sda2 and /dev/sdb2 in a raid array, so there must have been a subtle difference in /dev/sda that had allowed grub to install to it. Maybe grub was installed before I created the RAID array - I originally only had one disk in there? Anyway, any suggestions very welcome. The trouble with a xen server being that all my eggs are in one proverbial basket. Jenny

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Re: [ALUG] Reliable PCIE USB3 cards
by Mark Rogers 18 Jun '15

18 Jun '15

On 18 June 2015 at 15:31, Bobby Moss <bobbyjmoss(a)gmail.com> wrote: > Wouldn't it make more sense to hang fire until USB3.1 PCIe cards appear? To be honest I know nothing about USB3.1. Any idea when cards might appear? Even so I'd probably only use the release of USB3.1 as an opportunity to get a decent USB3 card cheap and wait for USB3.1 cards to come down in price (and get any bugs fixed!). In the meantime, though, I have drives I need access to now, and I'm currently having to either shuffle them between the available USB3 front ports I have or drop to USB2. So an interim solution is still worthwhile to me. I will keep an eye out for USB3.1 though. -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

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Detecting ethernet cabling issues
by Mark Rogers 17 Jun '15

17 Jun '15

Are there any tools that would help detect/locate cabling issues? I suspect I have a dodgy connection on a length of cable that runs outside my house between my (Ubuntu) desktop and my (OpenWrt) router. There's a gigabit switch between the two although I could probably reroute cables enough to bypass that if necessary. My old desktop has been generally slow for a while, and now that I've replaced it with a new PC, with a fresh install to a new SSD, it's (very disappointingly) no better. Given that most of what I use it for uses the network in some way I'm thinking that's my next place to look. Mark -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

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external HDD
by Anthony Anson 16 Jun '15

16 Jun '15

Just bought a portable hard drive enclosure and USB2 connection cable. The cable has two large USB connectors at one end - the second of which has a much shorter and skinnier cable; and a mini connector at the enclosure end. My not-very-portable storage of similar type, but big, has only one USB connector per end of its cable. I infer from this that the only one of the connectors at the pooter end should be (need be?) plugged in? The 500 GB HDD in the enclosure is SATA, as is the 160 GB one in the notebook. (because I had thought of installing things on the big one and puting it in the notebook...) Anyway, I can't poke it into life. I get the rude message: /Unable to mount location/ and underneath that: /Can't mount file./ Where is the fault? Hardware? Me? (I had meant to bring it along to the Norwich meet last night, but ) -- Tony http://www.girolle.co.uk/

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[ALUG Announce] 3rd Monday Monthly Ipswich Social Meeting : The Mulberry Tree
by samwise 15 Jun '15

15 Jun '15

ALUG Announce Please send announcements to Announce(a)lists.alug.org.uk Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce ----- The monthly "Third Monday" ALUG Ipswich Social Meeting is back today, 15th June, at 20:00: The Mulberry Tree 5 Woodbridge Road IPSWICH IP4 2EA Tel: 01473 225776 Map/Directions URI: http://maps.google.co.uk/?q=IP4+2EA WWW: https://www.facebook.com/MULBERRYHOSPITALITY The Mulberry Tree, previously known as The Milestone Beer House, is a grade 2 listed building in the centre of Ipswich. It is located at the intersection between Woodbridge Road and the A1156, across the road from the old Odeon cinema and not far from the Regent Theatre. It re-opened on Thursday March 29th 2012 after a major refurbishment, under its original name of The Mulberry House and has already begun to regain a good reputation for its selection of beers and ales. It has a sizeable car park to the rear of the building. All are welcome, novices and experienced users. Feel free to ask for further information on the Main ALUG mailing list. I'll be there, but I may be a tad late ... Cheers, Peter. -- I ran the London Marathon 2015 in aid of the PSP Association. All sponsorship gratefully received. :) http://www.bagshot-row.org/marathonformum ----- Send discussion replies to main(a)lists.alug.org.uk (Reply-To set) Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce

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[ALUG Announce] ALUG Norwich Pub Meet Thursday 11th June
by Viperfang 09 Jun '15

09 Jun '15

ALUG Announce Please send announcements to Announce(a)lists.alug.org.uk Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce ----- Hello Norwich Aluggers, Our monthly ALUG Norwich social meeting will be held this Thursday, 11th June at The Coach and Horses (82 Thorpe Road, Norwich, NR1 1BA). The meeting officially starts at 8pm, although some people may arrive earlier. More information on those people can be found on the list and the IRC channel. If you are unsure if you will recognise us then make yourself and your intent to attend known by either posting on list or visiting us on IRC so we can look out for you rather than hiding in the corner. Optionally you could ask at the bar if they know where the geeky computer weirdos are and they'll point you in the right direction (seriously!). Another possibility is look for heaps of electronics on a table that may possibly look like movie props that would used for detonating explosives. Feel free to bring electronics/laptops/gadgets to the meet, you will by no means be alone. Ben Bewick aka Viperfang NB: This mail is automated, please refer to the usual sources for more information. ALUG Contact Details: Website : http://www.alug.org.uk/ IRC : #alug on irc.alug.org.uk List : http://lists.alug.org.uk/mailman/listinfo Twitter : http://twitter.com/anglianlug Identica: TBA Facebook: http://www.facebook.com/group.php?gid=2381613902 ----- Send discussion replies to main(a)lists.alug.org.uk (Reply-To set) Unsub, change settings via http://lists.alug.org.uk/mailman/listinfo/announce

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Re: [ALUG] Hi
by John Cohen 02 Jun '15

02 Jun '15

Thanks for the welcome, good to know there's quite a few linux users around. Mark, I rely almost entirely on Pro Tools, which of course only runs on windows (badly) or mac, or a hackintosh in my case. But there are certain things I do on one of my linux boxes, like more creative sound design, including csound and pure data. Ardour's saved the day a few times when I needed emergency Foley recordings and didn't have my proper rig with me. I think I'm away on the 2nd Nev, but if not I might see you then. cheers, John -- John Cohen (+44)7500042065 www.john-cohen.com On 27 May 2015 at 13:18, Anthony Anson <tony.anson(a)girolle.co.uk> wrote: > On 27/05/15 12:51, Tony wrote: > >> >> Personal opinion of W7 is that it is bloated resource hog. >> > > Well, that's a 'given', but it's there, and there's loads and loads of > room on the HDD. I do have an XP CD and XP Crack, but have never used > either. > > Basic >> install consumes around 20gb. Is there not a linux alternative to >> Irfanview you could use? >> > > Don't think so, but haven't looked for ages. > > I use Shotwell to download and catalogue >> captures, Luminance HDR to process RAW HDR's, Gimp and Darktable to >> tweak and refine. Fotoxx could be an alternative to try. >> > > I've been using The Gimp, but for basic manipulation of graphics I haven't > found anything to beat Irfanview. > > -- > Tony > http://www.girolle.co.uk/ > > > _______________________________________________ > main(a)lists.alug.org.uk > http://www.alug.org.uk/ > http://lists.alug.org.uk/mailman/listinfo/main > Unsubscribe? See message headers or the web site above! >

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2600 meeting at 18:00 on Friday the 5th June.
by Viperfang 02 Jun '15

02 Jun '15

Quick heads up about this months Norwich 2600 meeting, more info at http://www.norwich2600.co.uk

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Ubuntu UPS
by Mark Rogers 31 May '15

31 May '15

I've had a Leibert UPS for a while and for some reason I decided today to plug the UPS cable in so I could get around to configuring NUT. However I noticed that without doing anything else, Ubuntu (15.04) was showing me a battery indicator (much as it would if this was a laptop). I removed power and it showed discharging, but not until a few minutes had passed. Similarly when restoring power it too several minutes to show charging. Any ideas where I can tweak this? I can't see any of the usual tools installed. (I did find /sys/module/battery/parameters/cache_time but changing that to zero had no effect.) -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

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Mapping a local IP to a remote one
by Mark Rogers 29 May '15

29 May '15

I'm sure that if I could make a decent job of explaining what I mean I could Google for this but... My PC is (say) 192.168.1.10, and it can access a remote device (192.168.2.100) via a VPN. What I want to do is give my PC an extra IP address (eg 192.168.1.11) and map all network traffic to that IP address (on any port, and including broadcast traffic) to 192.168.2.100, and send any responses back. In doing so, any other PC on my LAN would be able to access the remote device as if it were local (192.168.1.11). Can I do this? (Background: In this case I have some brain-dead Windows configuration software that can only talk to devices on the LAN, so I need to make the remote device appear as if it were on the LAN. However I have had similar challenges in the past where using a local Linux box as a conduit to remote devices would have been useful.) If relevant, whilst 192.168.2.100 is not a Linux PC (it's an industrial I/O unit), I do have a Linux PC on the remote network that could form part of the tunnel if required. The key point is that I need the remote unit to appear to be on the local network, not just to be accessible from it. My Windows PC can ping (etc) the remote unit fine via the VPN itself, but the configuration software will only search for and work with devices on 192.168.1.0/24, so I need to fake it. -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) 21 Drakes Mews, Milton Keynes, MK8 0ER

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