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nut upsmon comms issues
by Mark Rogers 14 Nov '16

14 Nov '16

Anyone here got more experience of UPS monitoring than I have? I have a UPS configured and working, however it periodically loses communications. I'm not too concerned about that - the server is due for replacement in the next couple of months anyway - but the comms errors are generating emails that I'd like to tweak so they're not filling my inbox. My inbox is filled with COMMBAD emails, followed within seconds (under a minute, usually) by COMMOK. So I'd like to put a delay on the triggering of a warning. The parameter that looks right is NOCOMMWARNTIME in /etc/upsmon.conf, but it defaults to 300s (5 min) anyway; I upped it to 600s (10min) with no change. I think on re-reading the man pages that this affects how often the warning is sent once triggered, not how long after detection the first warning gets sent. The emails get sent to a dedicated "systems" mailbox that should only get stuff that needs action, so getting a COMMBAD/COMMOK pair every few hours is quite frustrating. But turning off monitoring altogether seems like a bad "fix". Any suggestions? -- 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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[ALUG Announce] ALUG Norwich Pub Meet Thursday 10th November
by Viperfang 07 Nov '16

07 Nov '16

ALUG Announce Please send announcements to Announce(a)lists.alug.org.uk Unsub, change settings via https://lists.alug.org.uk/mailman/listinfo/announce ----- Hello Norwich Aluggers, Our monthly ALUG Norwich social meeting will be held this Thursday, 10th November 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 https://lists.alug.org.uk/mailman/listinfo/announce

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New member introduction
by Pete Dowdell 06 Nov '16

06 Nov '16

Hello! I joined the list last week. Here is an introduction, as asked: My name is Pete, I am a web developer. GNU/Linux servers are crucial to my work. I also use Ubuntu as my main O/S on my personal machines. I really like Linux! I have mainly joined this list as I am planning to come to Norwich this coming Thursday and meet some ALUG people in the pub. Looking forward to meeting you all then - I hope I have my dates correct! (I do, right? ;) Cheers, pd

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New member introduction
by Pete Dowdell 06 Nov '16

06 Nov '16

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Re: [ALUG] Building an (air gapped) offline Linux laptop as a newbie toLinux
by Noel Galer 03 Nov '16

03 Nov '16

Ian, >From another noobie, may I wish you every success with this interesting project and I look forward to hearing of your progress. Best regards, Noel ( Xorsyst ) ________________________________ From: main [mailto:main-bounces@lists.alug.org.uk] On Behalf Of Ian Henderson Sent: Wednesday, November 02, 2016 9:09 AM To: main(a)lists.alug.org.uk Subject: [ALUG] Building an (air gapped) offline Linux laptop as a newbie toLinux Hi, all, I am new to Linux. I'm porting over to Ubuntu 16.04 LTS with the Unity desktop from Windows 10. I want to keep things as simple (and hopefully therefore as reliable) as possible, for home/office critical use. I also want to stick to the main and universe repositories. Because prices were much lower for Linux-compatible laptops than with Win 10 installed, I can afford two. I plan to divide them into one for critical offline-only use, and the other for universal online use. I will air-gap the two. But it also means that I need to complete the final build of the offline air-gapped laptop ahead of porting data, after which it will not go online again (unless for a wipe and rebuild). For the offline-only laptop, I am looking at the following range of apps. Could I ask that you check my ideas, and offer suggestions and advice, please.:- 1) An office-like suite, for which I will be using LibreOffice, which is installed by default. 2) I need a whole-directory and free space overwriting utility, as well as the means to securely delete individual files. My understanding is that shred and wipe are available by default. I am looking at bleachbit for the whole-directory and free space wiping. But the software centre says "sudo" for this app: does that mean it has elevated privileges and is this a bad idea? 3) GtkHash for SHA256 etc. cryptographic hashes, primarily to verify backups. 4) Can anyone suggest an archiving utility which also verifies the files within the archive (I can then hash the archive file backup)? Archiving does not necessarily have to include compression. Are any installed by default? 5) GnuPG. I understand that this is installed by default? Am I correct that I can encrypt with password files if transferring on FAT32 USB or CD/DVD with this? Is it GUI? 6) CD/DVD burning, including both copying using a single optical drive, ordinary file burning and creating bootable CD/DVD from ISO images. I'm looking at Brasero for this. Can anyone suggest any other apps I should include ahead of locking off the build? I'm also assuming that the default 16.04 LTS supports formatting USB sticks to ext4, including encryption? Also, anyone any thoughts on using live-CD version of Ubuntu for online banking (in case the online unit got owned)? Please remember that I am a complete newbie to Linux. So please remember if you start talking about OpenWTF 0.666.1066 I will have no idea what you're talking about! Not for some months yet, anyway. :) Thanks for your help, Ian (C) Copyright 2016 by Ian Henderson. All rights reserved. Do not pass on my email address without my prior written consent (if emailing multiple recipients at the same time, use the BCC field in place of the To field).

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Re: [ALUG] 2600 meeting at 18:00 on Friday the 4th November.
by Nev Young 01 Nov '16

01 Nov '16

On 01/11/16 02:00, Viperfang wrote: > Quick heads up about this months Norwich 2600 meeting, > more info at http://www.norwich2600.co.uk > Oh no it isn't! Because of the fireworks in town on Friday we're meeting at my house. Limited room so invitation only. email me directly for location and directions. Nev

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2600 meeting at 18:00 on Friday the 4th November.
by Viperfang 01 Nov '16

01 Nov '16

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

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Is there such a thing as an ethernet switch with WiFi?
by Chris Green 31 Oct '16

31 Oct '16

This isn't really specifically a Linux question but I'm sure the ALUG team should be able to come up with an answer. I want a box which is an ethernet switch/hub (ideally an 8-port though five might be just enough) and also provides WiFi. I.e. a switch with both wired and wifi connections. It doesn't have to have any other intelligence, it doesn't need to be a router or anything. This is to hang onto the ethernet port of an outdoor WiFi access point which is running in WISP Client mode (a TP-Link TL-WA7210). The TL-WA7210 provides DHCP and DNS (via the WiFi hotspot it's connected to) so all I want is a box to provide multiple wired and wifi connections to the LAN side of the TL-WA7210. Is there such a beast? Is there a specific name for it? -- Chris Green

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iplayer issues
by Chris Walker 31 Oct '16

31 Oct '16

I recently built myself an HP ProLiant server. It's running Ubuntu server and I have most things working except the get_iplayer PVR option. I can run get_iplayer as the user as I have a script on the box which runs and can set the output correctly and transcode it into the required formats (radio and tv). So everything *appears* to run ok. But when I add the pvr option, I don't get the required downloads. Just in case it was something I'd done on the server, I tried creating a pvr list on this machine with just one radio programme, but again, when I run the pvr command, I don't get any downloads, only the statement that it's 'Running PVR Searches:'. Has anybody any idea where I'm going wrong please as I've spent many hours on this now and I'm getting nowhere despite looking through several pages of FAQ on the get_iplayer forums. -- __ __| |_ __ __ .----------------------------------------------. / _/ _` \ V V / | mailto:alug_cdw@the-walker-household.co.uk | \__\__,_|\_/\_/ |______________________________________________|

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SETI etc
by Mark Rogers 27 Oct '16

27 Oct '16

I have a virtual server at a hosting provider that I've cancelled, but it's got a few weeks left of what's currently been paid so rather than just leave it switched off I wondered about using it for something like SETI or similar. I really don't have time to configure and play with something; it really wants to be as close to "apt-get install seti" and walk away as I can get. It's also worth bearing in mind that this isn't a high power VM and I don't want to do anything that will upset the hosting provider by overstressing it. Suggestions? Or should I just leave it to fester? 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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Server permissions
by Chris Walker 25 Oct '16

25 Oct '16

Having bought an HP ProLiant server, I have finally managed to install Ubuntu Server on it and configure all the shares on it to replicate my old Edimax NAS. The problem comes when I try to run get_iplayer. What I used to do was run get_iplayer on this machine but save the files to the Edimax in a Media_Share folder. That same folder exists on the Ubuntu box, but although I can write to it from here, get_iplayer on ubuntu can't write to it. My intention is to have get_iplayer run every few hours but I'm guessing that it will still run as the main user on the box and therefore will still have problems writing to the share. Plainly I'd like a solution to this. My initial thought was to add the user to the same group as the one that owns the share but is this the best way to do it or is there another way? -- __ __| |_ __ __ .----------------------------------------------. / _/ _` \ V V / | mailto:alug_cdw@the-walker-household.co.uk | \__\__,_|\_/\_/ |______________________________________________|

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Making sense of ps
by Mark Rogers 24 Oct '16

24 Oct '16

I'm trying to monitor the memory usage of kweb running on a Pi. I have always found ps confusing with its multiple UNIX/BSD/GNU personalities. This is what I started with: $ps -F -C kweb UID PID PPID C SZ RSS PSR STIME TTY TIME CMD pi 936 756 1 67783 111088 1 09:53 ? 00:02:47 kweb -KFJHEP I find that the SZ/RSS values increase over time then drop, presumably due to some garbage collection (I'm really just guessing!). However the %age of memory used by kweb according to "top" keeps increasing, and is closer to the values I get from: $ps uax |grep -E '(kweb|USER)' USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND pi 936 1.1 11.7 271380 111304 ? Sl 09:53 2:47 kweb -KFJHEP What figures should I care about if I'm trying to track down a possible memory leak, and how do i coax them out of ps (or another tool)? Bonus question: What's the best way to get the values I'm interested in as a comma separated string (I'm trying to build a CSV file I can investigate in LibreOffice). A simple search & replace for spaces to commas doesn't work because spaces occur within some fields (and especially if I try to include other fields like start or running times). 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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Ubuntu has trashed the RAID
by Chris Walker 18 Oct '16

18 Oct '16

I've installed Ubuntu server on to a recently purchased HP ProLiant server. I did it first without my 2 1TB drives in it as I wanted to make sure that everything worked. It did and I could ssh into it from here. I then installed the 2 1TB drives which came from my old NAS machine and tried again. When the HP booted, it failed to see the SSD on to which I'd installed Ubuntu and as my skills aren't sufficiently good to rescue the system, and as I'd not done anything special to Ubuntu, I re-installed it. But Ubuntu has written the swap partition, not to the SSD but to one of the RAID drives which I'm not impressed by. I still have all the data on another disc so I'm not worried too much about that, I'm more concerned with how I move the swap partition to the SSD. Any suggestions on how I might go about that? -- __ __| |_ __ __ .----------------------------------------------. / _/ _` \ V V / | mailto:alug_cdw@the-walker-household.co.uk | \__\__,_|\_/\_/ |______________________________________________|

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[green.blackhousekeeping@gmail.com: Re: [alug social] Hello from new subscriber]
by Steve Engledow 17 Oct '16

17 Oct '16

Did anyone else get this bizarre bit of spam? Love it :) (Sent from my Arch linux machine - I don't run Ubuntu ;) ----- Forwarded message from Hung Sing Choy Li Fut Lady虎爪 <green.blackhousekeeping(a)gmail.com> ----- Date: Mon, 17 Oct 2016 19:58:26 +0100 From: Hung Sing Choy Li Fut Lady虎爪 <green.blackhousekeeping(a)gmail.com> To: Steve Engledow <steve(a)offend.me.uk> Subject: Re: [alug social] Hello from new subscriber You are misnamed. You call yourself a Linux user group, but you should call it an Ubuntu User Group, since Ubuntu users are clearly all you are prepared to accept. They're certainly the only people you're prepared to offer help to, even if you could help them convert to Ubuntu from my experience. Once a Fedora user, condemned forever, apparently. Oh and the problem turned out to be with my hardware, not my OS. If you had been able to get over laughing at me for being so utterly stupid as to use Fedora, you might have been able to help me work that out. Can't say the attitude I've experienced has made me want to convert to Ubuntu. If that is what Ubuntu users are like, you can keep your supposedly superior Linux system. On 13 Oct 2016 12:05, "Steve Engledow" <steve(a)offend.me.uk> wrote: > Hi Ian, > > Don't worry, we'll be conspicuous enough ;) > > Steve > > On 10/10, Ian Henderson wrote: > > Hi, > > > > I'm Ian. > > > > I've just braved the new world (for me) of Linux (Ubuntu), having been > > a long-time user both personally and professionally of Windows. Kind > > of scary and exciting to find myself a complete newbie with an OS > > again. But Microsoft's push updates and the critical role that my > > laptop has for me means I need to make the change or risk periods with > > no computer. > > > > I understand that you meet every 2nd Thursday in the Coach & Horses > > pub - and am assuming that means this Thursday (13th) at 8pm? If so, > > I'd like to go along so would ask you to "make yourselves > > conspicuous"(!) if you would, please. :) > > > > I'm happy to exchange home tel no with someone if you think that wise. > > > > Take care, all, > > Ian > > (C) Copyright 2016 by Ian Henderson. All rights reserved. > > Do not pass on my email address without my prior written consent (if > > emailing multiple recipients at the same time, use the BCC field in > > place of the To field). > > > _______________________________________________ > > The Alug Social mailing list > > To post: Social(a)lists.alug.org.uk > > To change your subscription options, visit:- > > https://lists.alug.org.uk/mailman/listinfo/social > > > _______________________________________________ > The Alug Social mailing list > To post: Social(a)lists.alug.org.uk > To change your subscription options, visit:- > https://lists.alug.org.uk/mailman/listinfo/social > ----- End forwarded message -----

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Re: [ALUG] Recovering a NAS
by Chris Walker 14 Oct '16

14 Oct '16

On Thu, 29 Sep 2016 16:58:07 +0100 mick <mbm(a)rlogin.net> wrote: > On Tue, 27 Sep 2016 14:52:28 +0100 > Chris Walker <alug_cdw(a)the-walker-household.co.uk> allegedly wrote: > > [ some snips ] > > > > 2009 is a long time ago. Time to upgrade. :-) > > > > I didn't realise it was so long ago until I started looking for the > > receipt. It's stored as a scanned image on the NAS ;-) > > But of course you have a backup copy... :-) Isn't that what RAID is for? So, as you might well assume from the previous line, no I don't have another copy as I've always trusted RAID to deliver everything for me. I'm beginning to see the error of my ways though. > I'd agree with Steve. If you wish to continue to use a separate NAS, > then build a PC to hold the disks and copy the data to new disks. I've > had success with both debian and ubuntu in both raid 1 and 5. My > current NAS uses 4 * 2 TB disks in a raid 5 array (backed up to a 6 TB > USB disk) built using ubuntu server 16.04. (Incidentally, if you > haven't already seen it, the "Wintel Guy" has a useful site at > http://wintelguy.com/raidcalc.pl giving all sorts of useful info about > raid configurations.) Thanks. I'll take a look at that site. I'm tending to move to the 'build a PC for NAS' idea. I've looked at small(ish) cases and now need to start looking for suitable motherboards and power supplies. > > Noel Galer suggested that I look on ebay for a replacement Edimax > > NAS box. Been there, done that, but all the t-shirts were sold out. > > You don't want an old T shirt anyway. I've already got plenty :-) > > I think the drives hold something like 850GB of files of all sorts. > Given that, I'd go for 2 * 2 TB disks in raid 1. Ok. Assuming that's the route I take, and adopt your maxim of backing that up to a large USB disc, can I automate that? I don't mind copying stuff to a NAS but then don't want to have to go to the trouble of copying stuff to a USB disc as well. The reason I want it to be automatic is that I know things will be overlooked if they're not. P.S. I remembered to copy this to the list as well this time! -- __ __| |_ __ __ .----------------------------------------------. / _/ _` \ V V / | mailto:alug_cdw@the-walker-household.co.uk | \__\__,_|\_/\_/ |______________________________________________|

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diff of binary files with helper program
by Mark Rogers 07 Oct '16

07 Oct '16

I need to perform diff against DBF (dBase database) files. dvview does a decent job of turning them into text files, but I don't want to have to convert all the files to text just to perform a diff. So I want a way to do something like: diff --helper=dbview file1.dbf file2.dbf .. or diff $(dbview file1.dbf) $(dbview file2.dbf) .. so that the files get converted to text on the fly. (Neither of those are remotely valid but hopely they get the idea across.) Is there a good way to do this? One objective is to do this using streams if possible, so that if file1.dbf and file2.dbf are very large there isn't any need to intermediate storage of files, but that isn't a huge problem if that's the only solution. -- 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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2600 meeting at 18:00 on Friday the 7th October.
by Viperfang 04 Oct '16

04 Oct '16

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

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Re: [ALUG] Recording Streaming Audio
by Peter Berrie 02 Oct '16

02 Oct '16

Phil, Thanks a lot. Seems to be that if you stream at say 320k mp3, what will happen is that it will be decoded, imported into audacity, then when you save, it will be recoded into FLAC or WAV or whatever you choose. Probably the thing to do is take the FLAC version in the first place, then save to FLAC from Audacity, and there should be no losses. My service has an offline listening service as it happens, so you can use their app and download and then sign in, in some way, not sure whether that is on or off line, and play without re-streaming. If you leave the service all those saved tracks go. And having done this on one album, I cannot for the life of me find where they have stored the tracks. Today I was on the service, which is generally really nice, and got an album up. It turns out that all tracks cannot be either listened to online or downloaded, but have to be bought. This is basically a totally irritating business. I like to use my little Sandisk player sometimes when out, which is cheap and cheerful but has quite extraordinary sound quality for the price -- and more importantly, for the minimal weight and bulk. But the restrictions imposed by the streaming service with the aim of preserving copyright seem utterly ridiculous by comparison to the freedom you have with a bought CD, which you can rip and move around and listen to on whatever you want. I am now looking at mplayer, which lets you send the user agent string of your choice, as well as do user name and password. Probably there will be some ingenious and cunning way they have thought of to prevent that! Peter

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Re: [ALUG] Recording Streaming Audio
by Phil Ashby 30 Sep '16

30 Sep '16

On 30/09/16 12:00, PB <peter.northerly(a)gmail.com> wrote: > Hi, > > Does anyone understand how Linux audio works, well enough to give me > some pointers on this? Hi Peter, I'll give it go, having spent far too long with my virtual arm up the insides of Linux audio stuff while getting radio stations working :) > ... > Sometimes I want to listen to the material on my tiny little portable > player when out and about. So I record the stream to file and copy > it across. I've discovered two fairly straightforward ways of doing > this. They are a bit manual, but I do not do it often so its OK. > > [recording the outgoing stream using gramofile or Audacity which > both produce WAV files - why?] This is simply because these tools pick up the raw, uncompressed digital audio stream going out of your SPDIF port, /after/ any app or media player has decoded the incoming (compressed) audio stream. They do this as it's guaranteed to work (no messing with decoders, or strange interfaces) and is always available either from the low level drivers (ALSA) or a preceding audio mixer such as PulseAudio. > There is also a package called streamripper, which seems like it > would do this, but I have not yet bothered. It lets you send a user > string corresponding to Firefox and to input user name and password. > And maybe mplayer will do it, and there is probably a way to input > user name and password on VLC from a command line startup. But the > above two methods work so I have not hacked around with alternatives > any further. You may have some success, it depends on how the streaming service protect their content using various Digital Rights Management (DRM) techniques (aka encryption/obfuscation). See below. > I would like to be able to save the stream in the mode in which its > received. If it is, for instance 320k mp3, then I would like to save > it as that, with no recoding which presumably will lower quality. > But something else must be going on with gramofile, because its WAV > that is written to disk. Similarly with Audacity. At what point are > they getting the stream and what are they doing with it? > ... > And if so, how do you get to write the digital stream being received, > with no conversions, just as it comes in, to file? @see above regarding where gramofile and Audacity get their audio from and why it's always WAV (raw) at this point. These raw audio recordings will be a bit-perfect copy of what you are hearing, no loss of quality. If you are really streaming MP3 files (not some weird AAC, WMA or other encrypted/protected format), then you /may/ be able to recover the file URL from your browser and use wget or curl to simply fetch the file. Most streaming services however go to great lengths to stop this as they don't want you taking a copy for yourself. Typical 'protection' mechanisms are: generating the majority of the browser content dynamically using obfuscated Javascript, embedding the media player in Adobe crud ware (Flashplayer), using custom codecs or whole applications that contain decryption keys, using proprietary protocols built on Websockets.. the list is endless and this is why tools like 'streamripper' may not work. I would continue using your existing technique(s), perhaps compressing the raw WAVs with flac or lame if you want to save disk space. Cheers, Phil. PS: It used to be possible to use a similar recording technique on Windows XP (from the 'Stereo Mix' device). Microsoft were encouraged by the recording industry to make that much more difficult in later versions, and some sound card manufacturers removed the capability entirely from their device drivers... think yourself lucky that won't happen on Linux :)

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Recording Streaming Audio
by PB 30 Sep '16

30 Sep '16

Hi, Does anyone understand how Linux audio works, well enough to give me some pointers on this? I subscribe to an audio streaming service. I listen to this by accessing the material on Firefox, and this sends it over SPDIF out to an outboard combined DAC and headphone amp. So far everything is fine and it sounds great. However, this is at my desk....where we are not always sitting when wanting to listen to tunes. Sometimes I want to listen to the material on my tiny little portable player when out and about. So I record the stream to file and copy it across. I've discovered two fairly straightforward ways of doing this. They are a bit manual, but I do not do it often so its OK. One is a neat little command line tool called gramofile. You start it up in record mode, then tune in the stream, and it writes it to a WAV file of your choice. Why WAV, when its coming in as MP3? Dunno. The second is, you start pavucontrol, then Audacity, and after getting the source right, you just do record, and start up the stream. This records it, and you then save it as whatever you want. There is also a package called streamripper, which seems like it would do this, but I have not yet bothered. It lets you send a user string corresponding to Firefox and to input user name and password. And maybe mplayer will do it, and there is probably a way to input user name and password on VLC from a command line startup. But the above two methods work so I have not hacked around with alternatives any further. My puzzle is not about HOW to do it, its about WHAT this is doing. I would like to be able to save the stream in the mode in which its received. If it is, for instance 320k mp3, then I would like to save it as that, with no recoding which presumably will lower quality. But something else must be going on with gramofile, because its WAV that is written to disk. Similarly with Audacity. At what point are they getting the stream and what are they doing with it? When doing the above recording, what exactly is being recorded? Is it a digital stream that is being written to file? Is there any format conversion going on in gramofile or audacity? Are they maybe taking the analogue signal, and if so from where, and encoding it? And if so, how do you get to write the digital stream being received, with no conversions, just as it comes in, to file? PB

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Disk to disk imaging
by Mark Rogers 28 Sep '16

28 Sep '16

I have a 2TB drive I want to copy to another 2TB drive. They're attached as USB devices to my Ubuntu desktop. I don't want to shut down and use a boot CD (eg Clonezilla) because I want to keep using my PC in the meantime. Assuming I want to copy from /dev/sdX to /dev/sdY, I know I can use dd if=/dev/sdX of=dev/sdY .. but it'll be slow because it'll copy loads of empty space. I know I can use partclone, which "understands" various filesystems and can skip empty space, but that won't clone the partitioning itself, nor I assume will it copy any boot sector stuff? What's the bit I'm missing, and/or is there a better way? 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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Recovering a NAS
by Chris Walker 27 Sep '16

27 Sep '16

In 2009 I bought an Edimax NAS from Scan.co.uk and it's worked fine since, albeit with a change of hard drives. However over the weekend it wouldn't power up cleanly. Neither of the hard drive lights would come on and it wouldn't come ready. I also couldn't communicate with it in any way. I got in touch with Edimax and they suggested doing a reset on it. That at least allowed me to communicate with it and it came ready, but it said that the discs weren't installed correctly although it did show the partitions. I removed both drives (WD 1TB Red drives in RAID1) and using mdadm, I can see the contents of disc 1 and it all looks ok. If I buy another NAS box, is there any way I can simply put these drives in it and expect it to work, or should I expect the new box to have a different arrangement somehow of formatting? What I'm seeking to avoid is loads of copying and moving of files. Are there any recommendations from people here as to a small (I don't want huge amounts of storage and I power off the box when not used) NAS? -- __ __| |_ __ __ .----------------------------------------------. / _/ _` \ V V / | mailto:alug_cdw@the-walker-household.co.uk | \__\__,_|\_/\_/ |______________________________________________|

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Re: [ALUG] Recovering a NAS
by Noel Galer 27 Sep '16

27 Sep '16

>-----Original Message----- >From: main [mailto:main-bounces@lists.alug.org.uk] On Behalf Of Chris >Walker >Sent: Tuesday, September 27, 2016 10:10 AM >To: main(a)lists.alug.org.uk >Subject: [ALUG] Recovering a NAS > >In 2009 I bought an Edimax NAS from Scan.co.uk and it's worked fine >since, albeit with a change of hard drives. > >However over the weekend it wouldn't power up cleanly. Neither of the >hard drive lights would come on and it wouldn't come ready. I also >couldn't communicate with it in any way. > >I got in touch with Edimax and they suggested doing a reset on it. That >at least allowed me to communicate with it and it came ready, but it >said that the discs weren't installed correctly although it did show >the partitions. > >I removed both drives (WD 1TB Red drives in RAID1) and using mdadm, I >can see the contents of disc 1 and it all looks ok. > >If I buy another NAS box, is there any way I can simply put these >drives in it and expect it to work, or should I expect the new box to >have a different arrangement somehow of formatting? > >What I'm seeking to avoid is loads of copying and moving of files. > >Are there any recommendations from people here as to a small (I don't >want huge amounts of storage and I power off the box when not used) NAS? > >-- > __ __| |_ __ __ .----------------------------------------------. >/ _/ _` \ V V / | mailto:alug_cdw@the-walker-household.co.uk | >\__\__,_|\_/\_/ |______________________________________________| > > I think as you suggest, any other NAS enclosure would likely have a different setup and the disks would not just transfer across. It is my understanding that much of a RAID drives configuration is actually on the drive itself with only some of it in the controller. Personally I would look on eBay and try to locate an identical unit which I would expect to 'just work'. However, if the worst comes to the worst and you are forced to copy huge tranches of files and are looking for a way to feel sure that the source and destination might actually match, plus you can put up with using Windows for a while ( assuming your disk formats are compatible ), I would thoroughly recommend trying a fabulous tool that must have been designed with us in mind. It is called 'Beyond Compare' by Scooter Software and I have been using it every day for over a decade. You can easily see what is on the source and destination disks side by side and copy all or part of you disk, at once or in recoverable stages and even compare multiple files and folders byte by byte to ensure all is well. See here :- http://www.scootersoftware.com/ Good luck, Noel ( Xorsyst ) _______________________________________________ main(a)lists.alug.org.uk http://www.alug.org.uk/ https://lists.alug.org.uk/mailman/listinfo/main Unsubscribe? See message headers or the web site above!

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Transferring servers
by steve-ALUG＠hst.me.uk 20 Sep '16

20 Sep '16

Hi, My in-home server is at the end of it's tether, and I need to move to new hardware (motherboard, psu, case, fans etc) before the old one finally fails. This is a very stupid question. Under windows, in days of old (win 95, 98, xp for instance), I've had some success in the past, with just transferring hard disks into the new machine, and then installing relevant drivers. Would this work under linux? (I'm running xubuntu) If not, what's the best way to go? Installing the same version of xubuntu on the new machine with the same packages as the old one, then copying the data and config files, or copying everything from the old machine and then booting from a live cd and installing from there over the top of the transferred data, then tweaking or restoring the customised config files, or something else? I'm currently raided (Raid 1, 2 disks mirrored). Presumably I should do this again? I have a / and a home partition. Again, should I stick with this? Should I be using LVM (Logical Volume Management)? If so, how can I do it with RAID? Any/all advice gratefully received! Steve

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Linux magazines
by Mark Rogers 20 Sep '16

20 Sep '16

I have various Linux magazines going back over several years that are taking up space. I'm tempted to keep them as an interesting archive of how things have progressed, but I'm also thinking of letting some/all go to recover some room on the bookshelf. Is there any interest here if I decide to let them go? If there's interest I can get some kind of list together, but over the years I've tended to subscribe to most Linux magazines (although not necessarily kept them all). It's unlikely I've still got many cover CD/DVDs. -- 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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