Re: [Sugar-devel] 883 on XO1
"Having builds available via bittorrent or some other p2p tool would be very useful when the dev team in in China" In China and everywhere... Now, I not good connection (i'm using a 3G modem) but I can make .torrent of 883 and another image... When I try to make .torrents... ever have problems with the trackers :-( Someone have experience? I think that is important have (at least) the last image in some P2P.. for the places that the connection is notgood.. Regards! Alan ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] 883 on XO1
Thanks to James, we successfully repaired the download. A very neat solution that I had not realised was possible. For others that may find it useful, we used the Linux split command (I used the XS) to chop the faulty download into 128 small chunks of about 5MB each and then did checksum with md5sum on each, identified the errant chunk, which I then downloaded and used cat command to rejoin them. I now have the 883 build for the PNG schools. Many thanks James and Alec David -Original Message- From: Richard Smith [mailto:smithb...@gmail.com] On Behalf Of Richard A. Smith Sent: Monday, 9 January 2012 6:02 a.m. To: Alec Muffett Cc: David Leeming; Sugar devel; de...@laptop.org Subject: Re: [Sugar-devel] 883 on XO1 On 01/06/2012 03:46 AM, Alec Muffett wrote: > At the risk of sounding perverse you could do block-level repair on > this by having someone put the same file up for Bittorrent somewhere, > and David could start the torrent, pause his "repeat" download, > install a copy of previously-downloaded file, restart his Bittorrent > client and have it download/repair the corrupted blocks for fairly > small bandwidth consumption. Having builds available via bittorrent or some other p2p tool would be very useful when the dev team in in China. Bandwidth at the factory is limited on per IP basis. If the builds were available via p2p with swarming then the team could peer each other and we all would download chunks in parallel. We do this sometimes manually now by cutting up the file into chunks and each of us download a chunk. I started to do this one trip but got stuck trying to find a text mode bittorrent server that you could work with via ssh and then get it working. I'm only a casual bittorrent user. -- Richard A. Smith One Laptop per Child ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] 883 on XO1
The method used was to take a checksum of each of 128 parts of the file, compare the checksums, and then transmit only the corrupted part. This recovery method is only applicable if the file size matches, but the checksum does not. I've written this up at http://wiki.laptop.org/go/Download#Wrong_Data -- James Cameron http://quozl.linux.org.au/ ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] 883 on XO1
On Fri, Jan 6, 2012 at 8:22 PM, James Cameron wrote: > (we have discovered that only a tiny part of the file is corrupted ... > so far one part in 128). > So only about 70 cents worth. cjl ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] 883 on XO1
(we have discovered that only a tiny part of the file is corrupted ... so far one part in 128). -- James Cameron http://quozl.linux.org.au/ ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] 883 on XO1
Hi Chris! Working on a neat repair with James - will report back how it goes. Cheers for the support! Let me know off list on the localising. David -Original Message- From: Chris Leonard [mailto:cjlhomeaddr...@gmail.com] Sent: Saturday, 7 January 2012 12:59 a.m. To: David Leeming Cc: Sugar devel; de...@laptop.org Subject: Re: [Sugar-devel] 883 on XO1 On Fri, Jan 6, 2012 at 12:26 AM, David Leeming wrote: > So i conclude I have just thrown USD 85 down the toilet. > Ouch, David, I will happily keep you supplied with pre-tested OLPC image downloads (by snail-mail CD-ROM) in exchange for some help recruiting localizers for the Oceanic languages. Consider it a standing offer. cjl Sugar Labs Translation Team Coordinator ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] 883 on XO1
On Fri, Jan 6, 2012 at 12:26 AM, David Leeming wrote: > So i conclude I have just thrown USD 85 down the toilet. > Ouch, David, I will happily keep you supplied with pre-tested OLPC image downloads (by snail-mail CD-ROM) in exchange for some help recruiting localizers for the Oceanic languages. Consider it a standing offer. cjl Sugar Labs Translation Team Coordinator ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] 883 on XO1
On Fri, Jan 06, 2012 at 08:46:25AM +, Alec Muffett wrote: > Lacking that has anyone got an equivalent hash-the-blocks-based binary > diff tool, or does one just need to be written? rdiff or rsync is what I would use. But all such tools require some effort to explain, or in David's case, to download. -- James Cameron http://quozl.linux.org.au/ ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] 883 on XO1
G'day David, The file fs.zip on the USB drive is correct. The file os883.img on the USB drive is incorrect. The md5sum you calculate differs from what I calculate. I calculate e9e8d45a513b10f6c23145f7c6ba766b and my calculation matches the md5 file we have on our web server: http://download.laptop.org/xo-1/os/official/883/os883.img.md5 I've also checked the file on the server in case it was corrupt there. It is correct. The file length is correct. 664,448 KB, at 1024 bytes per KB, exactly matches the file size on the server of 680,394,752 bytes. So some of the bytes are incorrect. I'll post you a private mail next with a method to check the file in more detail. There may be an easy fix. -- James Cameron http://quozl.linux.org.au/ ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] 883 on XO1
Correction (883 not 833) Hi James, Here is the info below. Maybe it is something else? It fails at exactly the same place regardless which flashdrive I use. It's an XO-1 with build 852 David -Original Message- From: qu...@us.netrek.org [mailto:qu...@us.netrek.org] On Behalf Of James Cameron Sent: Friday, 6 January 2012 4:42 p.m. To: David Leeming Cc: 'Sugar devel'; de...@laptop.org Subject: Re: [Sugar-devel] 883 on XO1 Please provide: 1. the names of the files on the USB drive, os883.img fs.zip (renamed from os883.img.fs.zip) 2. the sizes of the two files, in bytes, especially the files os883.img and fs.zip, os883.img 664,448 KB fs.zip 428 KB 3. the md5sum of the two files. 30ae72e62e78a4de32e21e5d76dd46fc fs.zip d23b46324cc2a50deb60fdb96649a828 os883.img md5sum -c ...: fs.zip OK os883.img OK This will let me check your download. You might be able to find some people here to do your downloads by post for much less than $USD 85. -- James Cameron http://quozl.linux.org.au/ ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] 883 on XO1
Hi James, Here is the info below. Maybe it is something else? It fails at exactly the same place regardless which flashdrive I use. It's an XO-1 with build 852 David -Original Message- From: qu...@us.netrek.org [mailto:qu...@us.netrek.org] On Behalf Of James Cameron Sent: Friday, 6 January 2012 4:42 p.m. To: David Leeming Cc: 'Sugar devel'; de...@laptop.org Subject: Re: [Sugar-devel] 883 on XO1 Please provide: 1. the names of the files on the USB drive, os833.img fs.zip (renamed from os883.img.fs.zip) 2. the sizes of the two files, in bytes, especially the files os883.img and fs.zip, os833.img 664,448 KB fs.zip 428 KB 3. the md5sum of the two files. 30ae72e62e78a4de32e21e5d76dd46fc fs.zip d23b46324cc2a50deb60fdb96649a828 os883.img md5sum -c ...: fs.zip OK os883.img OK This will let me check your download. You might be able to find some people here to do your downloads by post for much less than $USD 85. -- James Cameron http://quozl.linux.org.au/ ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
Re: [Sugar-devel] 883 on XO1
Please provide: 1. the names of the files on the USB drive, 2. the sizes of the two files, in bytes, especially the files os883.img and fs.zip, 3. the md5sum of the two files. This will let me check your download. You might be able to find some people here to do your downloads by post for much less than $USD 85. -- James Cameron http://quozl.linux.org.au/ ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
[Sugar-devel] 883 on XO1
Apologies if this has been explored before, I have not been able to stay current. I am posting on both Sugar and OLPC dev lists. I live in Solomon Islands, where we have very poor Internet access and downloading is affected by satellite latency etc. I just tried to install the latest stable for XO1, advertised as 883 / 11.3.0 on one of my few XO-1s. I have not had access to any higher versions of the XO and am working with a programme in PNG which has XO-1s. I downloaded the image (BTW in Solomon Islands that cost me USD 85) using a download manager Star Downloader (to protect me against Internet drop outs). It downloaded with no errors reported. I then tried to install on my XO using a flashdrive as per the usual 4-game key method. On first attempt it failed during the part where you see the progress indicated graphically with the memory grid in green yellow and black. It says: 4ce Bad hash for eblock# 4ca Your USB key may be bad...please see http:/wiki.laptop.org/go/Bad_hash The diagnosis is that it's either bad flashdrive or bad download. I tried 2 other flashdrives that have successfully been used before, and same result at same place. So i conclude I have just thrown USD 85 down the toilet. Can anyone with similar or relevant experience comment. David in Solomon Islands "Not Happy" ___ Sugar-devel mailing list Sugar-devel@lists.sugarlabs.org http://lists.sugarlabs.org/listinfo/sugar-devel
