April 2012 - luv-main

[luv-main] flashing a Samsung Galaxy S
by Russell Coker 18 Oct '12

18 Oct '12

http://wiki.cyanogenmod.com/wiki/Samsung_Galaxy_S:_Full_Update_Guide I've got a Galaxy S that I want to use for Cyanogenmod. I went through the part of the above that starts with "assumes the Samsung Galaxy S already has Android 2.3" while my phone had Android 2.2. The result is that it just flashes on the kernel boot screen. I can still get into download mode so all is not lost (yet). http://www.samfirmware.com/WEBPROTECT-i9000.htm I tried getting other zImage files from the above, I tried the 2011 March copy of Android 2.2 from the "America Australia Samsung I9000 Firmwares" section of the above. http://www.samfirmware.com/apps/blog/show/8512833-android-2-3-5-for-galaxy-… I also tried the 2.3.5 from the above. Neither worked. Any suggestions on what I should try next? The phone came from Optus and was running Android 2.2 when I got it. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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Periodic ntp loss of synchronisation problems
by Andrew Worsley 03 Jul '12

03 Jul '12

I am having periodic ntp synchronisation problems. ntp doesn't directly log anything - but I am using nagios3 to track it's synchronisation and I periodically get problems - several times a day. I can't figure out what is causing the loss of synchronisation. Perhaps a burst of ntp packets dropped? But wouldn't ntp log something about this? Any suggestions on logging more info to find the cause or deeper insights into what is going wrong would be appreciated. Andrew Here's the output of commands when things are bad: config(0)# check_ntp_peer -H 127.0.0.1 -w 1.0 -c 2.0 NTP WARNING: Server has the LI_ALARM bit set, Offset 0.210925 secs|offset=0.210925s;1.000000;2.000000; LI_ALARM apparently means not in sync ??? config(1)# ntpq -c rl associd=0 status=c618 leap_alarm, sync_ntp, 1 event, no_sys_peer, version="ntpd 4.2.6p2(a)1.2194-o Sun Oct 17 13:35:13 UTC 2010 (1)", processor="x86_64", system="Linux/2.6.32-5-amd64", leap=11, stratum=3, precision=-23, rootdelay=95.696, rootdisp=263.117, refid=192.189.54.33, reftime=d2bccf2f.4854b34f Sun, Jan 15 2012 15:06:07.282, clock=d2bcd1d6.e9ffea4c Sun, Jan 15 2012 15:17:26.914, peer=16519, tc=10, mintc=3, offset=0.000, frequency=500.000, sys_jitter=35.804, clk_jitter=0.000, clk_wander=91.828 It thinks it's in error by 16s??? config(0)# ntpdc -c kerninfo pll offset: 0 s pll frequency: 500.000 ppm maximum error: 16 s estimated error: 16 s status: 4041 pll unsync mode=fll pll time constant: 10 precision: 1e-06 s frequency tolerance: 500 ppm ntptime gives the same info config(0)# ntptime ntp_gettime() returns code 5 (ERROR) time d2bcd2be.08d3a000 Sun, Jan 15 2012 15:21:18.034, (.034479), maximum error 16000000 us, estimated error 16000000 us ntp_adjtime() returns code 5 (ERROR) modes 0x0 (), offset 0.000 us, frequency 500.000 ppm, interval 1 s, maximum error 16000000 us, estimated error 16000000 us, status 0x4041 (PLL,UNSYNC,MODE), time constant 10, precision 1.000 us, tolerance 500 ppm, Then mysertiously everything is okay: config(0)# ntpdc -c kerninfo pll offset: 0.00998 s pll frequency: 500.000 ppm maximum error: 1.6291 s estimated error: 0.004771 s status: 0001 pll pll time constant: 10 precision: 1e-06 s frequency tolerance: 500 ppm My leap becomes none (no leap_alarm) and things are ok? config(0)# ntpq -c rl associd=0 status=0618 leap_none, sync_ntp, 1 event, no_sys_peer, version="ntpd 4.2.6p2(a)1.2194-o Sun Oct 17 13:35:13 UTC 2010 (1)", processor="x86_64", system="Linux/2.6.32-5-amd64", leap=00, stratum=3, precision=-23, rootdelay=95.272, rootdisp=983.007, refid=192.189.54.33, reftime=d2bcd33b.bbc10580 Sun, Jan 15 2012 15:23:23.733, clock=d2bcd852.ec6be1b9 Sun, Jan 15 2012 15:45:06.923, peer=16519, tc=10, mintc=3, offset=13.497, frequency=500.000, sys_jitter=7.251, clk_jitter=4.772, clk_wander=151.809

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Audio recording
by Mark Trickett 27 May '12

27 May '12

Hello All, I have a turntable with both analog and streaming USB outputs. It is one from Jaycar. What audio packages do I need to be able to record the streaming USB on Ubuntu and Debian? I have been looking, and there are vague references in the comments about recording, but not specifically stating that they can capture from USB. There is a CD of Windows software, and I am hoping that I do not need to enable something first from a Windows box. That is a SNAFU about which I do not yet have information, but will be looking at. I am thinking along the lines of some USB devices with the software distributed as files on the storage side, but flippable into an "active" device mode, such as some wireless "modems". Regards, Mark Trickett

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ZaTab from ZaReason - a fully open Android tablet
by Chris Samuel 14 May '12

14 May '12

Hi folks, I originally sent this to the Melbourne Free Software Interest Group, but I reckon this would be of interest to others on this list and so I'm reposting here. Apologies to those who get duplicates! The US company ZaReason who build Linux systems (and are currently investigating opening a store in New Zealand) have been working on a fully open Android tablet for some time now. Well it's now appeared on their website for pre-orders (unlinked from the rest of the site, but tweeted about) here: http://zareason.com/shop/zatab.html I've blogged about it here: http://www.csamuel.org/2012/04/25/the-zatab-from-zareason-a-fully-open-sour… summarising what I've learnt from their tweets and from their site, plus noting that the status of their GPU driver is unclear (there is an open source driver in development, but its maturity is claimed to be low). The tablet ships with CyanogenMod 9 and an unlocked boot loader. I would presume it doesn't ship with the Google Apps as they're not open. I've asked via Twitter if they plan on having F-Droid installed by default. Timely given the interest in free software Android devices! cheers, Chris -- Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC This email may come with a PGP signature as a file. Do not panic. For more info see: http://en.wikipedia.org/wiki/OpenPGP

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gvfs mount vs mount.cifs
by Colin Fee 28 Apr '12

28 Apr '12

On my work notebook running LMDE with cinnamon I can use nautilus to "connect to server", in this case my 'home' share on the Monash windows AD service. The connection I get gives me all pertinent file system rights and appears in the .gvfs folder in my home folder with the expected rights as well. However if I issue a direct mount.cifs command thus: ~$ sudo mount.cifs //ad.monash.edu/home/my-server-name/colinfee/home/colinfee/ad-home -ocredentials=/home/colinfee/.smb/ad-credentials It mounts but with the /home/colinfee/ad-home and subfolders etc owned by root. Varying the mount command thus makes no difference ~$ sudo mount.cifs //ad.monash.edu/home/my-server-name/colinfee/home/colinfee/ad-home -ocredentials=/home/colinfee/.smb/ad-credentials,uid=colinfee,gid=colinfee,setuids ~$ ls -ald ad-home drwxr-xr-x 6 root root 0 Apr 16 16:42 ad-home/ I've also tried the forceuid/gid options too. I can use file_mode=0777 and dir_mode=077 to override the issue but it seems like cheating. Is what I'm seeing an artefact of my local LMDE system or the remote Windows AD share? As it works via the nautilus fuse method, why not mount? Ultimately what I'm trying to do is mount the share and use rsync to sync my local files to the server. -- Colin Fee tfeccles(a)gmail.com

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Re: ZaTab from ZaReason - a fully open Android tablet
by Chris Samuel 26 Apr '12

26 Apr '12

On 26/04/12 09:18, Sam Varghese wrote: > It can be purchased only by residents of the US, France, Canada and New Zealand. I've just queried them about that on Twitter, will see what they say. I'm not after a tablet myself so didn't try and buy one.. -- Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC

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dhcp-fwd on openwrt
by James Harper 26 Apr '12

26 Apr '12

I'm struggling with dhcp-fwd on an openwrt box (buffalo wzr-hp-g300nh2ap). It receives the discover packet on the lan, forwards it on the other interface, but then ignores the reply when it comes back. I'm using dhcp-fwd with tunnels everywhere else and it works fine but this is a point to point wireless link. Any suggestions? Thanks James

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Moving a PV onto raid
by Brett Pemberton 23 Apr '12

23 Apr '12

Wondering if anyone has any comments. A home system has N number of 1.5TB drives, running in RAID5. At one point, these drives stopped becoming available, so the last time I extended the array, I used a 2TB drive. That drive is formatted with: /dev/sdg1 2048 976735943 488366948 8e Linux LVM /dev/sdg2 976735944 3907029160 1465146608+ fd Linux RAID autodetect The LVM system in question holds my root/home, etc. Now that a 1.5TB drive has failed, I'm replacing it with another 2TB drive, and wondering the best way to use the remainder 500GB My first thought is to set up a RAID1 array, and put my PV on there. Is there a better plan? Are there going to be any issues, such as booting? I presume grub2 will be fine, and will just add an 'insmod raid' before the 'insmod lvm' line in my grub.cfg As for the procedure, my vague plan is: sfdisk -d /dev/sdg | sfdisk /dev/sdh mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/sdh1 missing pvcreate /dev/md1 vgextend system /dev/md1 pvmove -v /dev/sdg1 pvremove /dev/sdg1 mdadm --manage /dev/md1 --add /dev/sdg1 mount /, chroot into it, run grub-install Can anyone see any flaws in logic, places to improve? cheers, / Brett

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NFS v4 mounts and bizarro id mapping
by Toby Corkindale 23 Apr '12

23 Apr '12

Hi, I'm struggling to get the idmapd component of NFSv4 mounts on Linux (Debian Squeeze) to work properly. However, it's a different kind of problem to the common issue everyone has with it on the internet, so Googling isn't getting me very far :( idmapd is running on all servers concerned, and with the verbosity turned up to the max, syslog indicates it seems to be getting called with expected values. It seems to be working on the surface, in that if you 'ls' in a directory, it has correctly mapped the users and groups over to the local ones, so they match up. ie. if toby has uid=1000 on one server and uid=1001 on another, then looking at the files on both servers will show the owner to be toby. However, actually attempting to manipulate/access files or directories fails with "Permission denied" errors. If I fudge the uid on one server to use the uid that I know is actually in use on the other server, then I can access the file.. but a "ls" will show it to be owned by another user. So in other words, reads seem to be using the idmapping, but writes seem to be bypassing it. Any suggestions? Thanks in advance, Toby

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Re: [luv-talk] Buying a new server
by Russell Coker 21 Apr '12

21 Apr '12

On Wed, 18 Apr 2012, Dave Oxley <dave(a)daveoxley.co.uk> wrote: > I have an 7 year old dell server that is in need of replacement. It's > uses among others are MythTV backend, Asterisk, Web server, email, IP > routing, various Java web apps. I had spec'ed and almost bought a new > Dell server but got really disenchanted with their crappy sales guys. > They wouldn't remove the 500Gb hard disk that added $300 to the price It appears that Dell makes the vast majority of their profit from disks, RAM, etc. The prices on Dell systems are quite low but the prices on parts (particularly disks) are unreasonably high. > and suggested I go to ebay for additional hard disk caddies which > apparently don't come with it. The plan was to add 4 Seagate SV35.5 3Tb > drives which are about $300 ea and mdraid them. http://etbe.coker.com.au/2012/04/17/zfs-btrfs-cheap-servers/ Ihave just blogged about similar issues at the above URL. http://www.servertrays.com/category/823/Dell Someone commented with the above URL. E30 per tray is fairly expensive, but a lot cheaper than the price difference between Dell disks and regular SATA disks. It should also be a lot easier than buying on eBay. > I've since been looking into building my own server but I'm not sure > what to do for a case. I'm after a case with 6+ hot-plug backplane, > preferably redundant PSU and tool-less. Why do you want a redundant PSU and hot-plug disks? If it's a home server then why not just take some downtime if a PSU fails and schedule downtime for disk replacement? > So does anyone have any suggestions of where I go from here? I'm happy > to buy a pre-built server but not happy about buying Dell anymore. I'm > also happy to build my own. http://www.graysonline.com/ Check out Grays, they have lots of refurbished and ex-demo servers from big name companies. I've bought a few HP servers from them and was pleased by the result. > The budget is about $3000 and the specs I'm after are roughly are: > 1x 6 core Intel Xeon processor > Motherboard with 2 processor sockets, 2+ Gigabit LAN, 6+ SATA > 12+ GB or ram upgradable > 6+ hot plug case with SATA backplane > redundant PSU > 9+ TB raid 5 Disk space Why aren't you using BTRFS or ZFS? As an aside, I'm trying to avoid upgrading some of my servers until I feel that BTRFS is ready to use on them. I'd rather implement a new filesystem and new disks at the same time. One of my servers has a RAID-1 array of 1TB disks and I'm planning to make it a BTRFS RAID-1 of 4TB disks some time after Wheezy is released. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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