devel April 2008

devel@lists.fedoraproject.org

314 participants
365 discussions

upgrading RH 9 system->Fedora with iso files and apt only
by Didier Casse 17 Jan '22

17 Jan '22

I have the yarrow's iso files on my HD in a RH9 system. Let's say I want to upgrade selected packages using an "apt-get install" pointing to my iso-mounted files, how do I do it? i.e I mount the iso into some /mnt/yarrow1, /mnt/yarrow 2 etc.. Then what is the complete procedure to make my apt look into my own HD to upgrade packages. Can anybody redirect me to the correct resource or some literature hanging on the web? Thanks. Assume also that I do not wish to burn CDs! I do not want to use apt-cdrom. Thanks. With kind regards, Didier. --- PhD student Singapore Synchrotron Light Source (SSLS) 5 Research Link, Singapore 117603 Email: slsbdfc at nus dot edu dot sg \or\ didierbe at sps dot nus dot edu dot sg Website: http://ssls.nus.edu.sg

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kernel/accounting question ...
by William W. Austin 16 Dec '09

16 Dec '09

(I know that this question might be more reasonable on a kernel list, but a while back I posted the question twice and got no answers.) The acct struct is defined in /usr/include/sys/acct.h includes both ac_io and ac_rw for bytes transferred and blocks read or written, respectively. Fair and good - works (on paper) similarly to unix, solaris, hp-ux, etc. However, in the kernel code [kernel/acct.c], ac_io (char) and ac_rw (blocks) are always set to 0 by these two lines: ac.ac_io = encode_comp_t(0 /* current->io_usage */); ac.ac_rw = encode_comp_t(ac.ac_io / 1024); For most purposes, this probably wouldn't be an issue, but I also do extensive performance analysis on several platforms and have written a fairly compresive accounting package (as a wraparound for psacct or as a standalone) including both an improved acctcom and a built-in reporter for it. Does anyone know wby the kernel zero's out the bytes transferred data? (Overhead comes to mind.) Not that it makes a huge differnce for my purposes (I had to write some wraparound code to make a "best-guestimate" about the data I'm missing), but curiosity is bugging me now. When I compile my program on other OS's I get useful data for char and block i/o and I'd like to find out whether there is something obvious that I'm just totally missing here...). Thanks -- william w. austin waustin(a)speakeasy.net "life is just another phase i'm going through. this time, anyway ..."

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acctcom for linux
by William W. Austin 16 Dec '09

16 Dec '09

I recently made several updates to a Linux version of of acctcom (actually another accounting add-on package) which I've been using for several years, and one of the people testing it asked a question which I cannot answer. I'm hoping that someone on this list can give me some info. I have previously (over a year ago) asked on both this and a couple of kernel lists (several times there) about this issue, but nobody has ever answered. So if you have any info about this, I'd really appreciate it. As in many (all?) previous Linux kernels, the struct acct (defined in /usr/include/sys/acct.h) has members ac_io and ac_rw which are presumably counts of characters transferred and blocks read/written respectively. However, in the kernel code, the ac_io is set to 0 and the ac_rw gets set to (ac_io/512) or some such - it is set to 0 as well (and thus these are always reported as 0 in process accounting records. not good if you're trying to measure them...). Does anybody know why this is done that way? A long time ago (IIRC late 2.2 and an early 2.4 kernel) I looked into "fixing" this in the kernel code but was not successful (I finally produced a bootable kernel, but it was unstable. Then I changed jobs, got swamped at work, and eventually gave up). As I said above, I have previously asked about this issue without success, and I have essentially given up changing or "fixing" it. But if anyone knows __WHY__ it is this way (I'm hypothesizing that it's just too much work for too little added value), I'd really appreciate knowing the reason. Curiosity and the cat and all that ... Thanks - Bill -- william w. austin waustin(a)speakeasy.net "life is just another phase i'm going through. this time, anyway ..."

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mock 0.8.9 will not build anything
by Frank Büttner 04 Jan '09

04 Jan '09

Hello, when I try to build an package mock will fail with: ERROR: Command(/usr/sbin/groupadd -g 102 mockbuild) failed. See logs for output. At the root.log: 2008-01-18 09:48:01,860 - DEBUG trace_decorator.py, Line: 20: ENTER: doChroot((<mock.backend.Root object at 0xb7dc8e8c>, '/usr/sbin/grou padd -g 102 mockbuild', ''), {}) 2008-01-18 09:48:01,861 - DEBUG trace_decorator.py, Line: 20: ENTER: do(('/usr/sbin/groupadd -g 102 mockbuild', '/var/lib/mock/fedora-de velopment-i386/root', 0, True, 0, None, None, None, None), {}) 2008-01-18 09:48:01,862 - DEBUG util.py, Line: 212: Run cmd: /usr/sbin/groupadd -g 102 mockbuild 2008-01-18 09:48:01,862 - DEBUG util.py, Line: 218: Executing timeout(0): /usr/sbin/groupadd -g 102 mockbuild 2008-01-18 09:48:01,866 - DEBUG trace_decorator.py, Line: 20: ENTER: condPersonality((None,), {}) 2008-01-18 09:48:01,869 - DEBUG trace_decorator.py, Line: 30: LEAVE condPersonality --> None 2008-01-18 09:48:01,870 - DEBUG trace_decorator.py, Line: 20: ENTER: condChroot(('/var/lib/mock/fedora-development-i386/root', None), {} ) 2008-01-18 09:48:01,871 - DEBUG trace_decorator.py, Line: 30: LEAVE condChroot --> None 2008-01-18 03:48:01,872 - DEBUG trace_decorator.py, Line: 20: ENTER: condDropPrivs((None, None, None), {}) 2008-01-18 03:48:01,873 - DEBUG trace_decorator.py, Line: 30: LEAVE condDropPrivs --> None 2008-01-18 09:48:01,973 - DEBUG util.py, Line: 234: groupadd: name mockbuild is not unique 2008-01-18 09:48:01,977 - DEBUG trace_decorator.py, Line: 27: EXCEPTION: Command(/usr/sbin/groupadd -g 102 mockbuild) failed. See logs f or output. Any ideas, what goes wrong?? Frank

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Glade(2/3) and Anjuta in comps-f9.xml
by Debarshi Ray 22 Dec '08

22 Dec '08

Looking at http://cvs.fedoraproject.org/viewcvs/comps/comps-f9.xml.in?view=markup I find that Glade2 and Anjuta are marked as default and optional respectively. While Glade 3.4.1 (separate package from Glade2) is already there in the repositories, we are soon going to have a fresh new Anjuta package (atleast 2.2.3) in Fedora. However, the latest versions of Anjuta -- both 2.2.3 (stable) and 2.3.x (unstable) -- need Glade3 for its Glade plugin to work. So can we consider replacing Glade2 by Glade3 in the comps-f9.xml.in for Fedora 9? As far as I know, this would affect the Live Developer Spin and the non-live GNOME DVD. What do you think? Cheerio, Debarshi -- Free software for the Indian community: * ftp://fedora.glug-nith.org/ (Fedora) * http://gnu.glug-nith.org/ (GNU) * http://mirror.wbut.ac.in/ (CRAN, Fedora, Mozilla, TLDP)

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file system mount
by Amitakhya Phukan 01 Sep '08

01 Sep '08

hi all! i have a system with fedora 7 and rhel 5 installed. recently, i changed the f7 to rawhide. now whenever i boot up, it mounts all the file systems related to rhel5 along with it and displays on the desktop. dmesg says /dev/sda1 mounted on /media/_1 and so on. I want to disable this feature. i don't know if this is anything useful ?? i even don't know if its a feature or a bug... can any one please help me out with this thing ? i understand hal is doing this (??), but why ? and even when i unmount it, the same can still be found in /media. right clicking on those partitions give me the option of mounting/unmounting them. but i don't want to let them appear in my rawhide systems totally. anyone else has this experience on rawhide??how do i disable it ?? thanks in advance. with regards, amitakhya phukan.

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RFC: FEver and RPath checks in Koji
by Debarshi Ray 31 Aug '08

31 Aug '08

I have a couple of proposals which I wanted to sound out. + Would it be possible to run FEver (http://fedoraproject.org/wiki/PackageMaintainers/FEver) on a regular basis? Currently I get the feeling that it is run manually at irregular intervals, and since I depend heavily on it for tracking upstream releases this often means that a release is missed occasionally. + Would it be a good idea to have rpath related checks in Koji? Although I use "%__arch_install_post /usr/lib/rpm/check-rpaths /usr/lib/rpm/check-buildroot" in my ~/.rpmmacros, some rpath issues are only detected on x86_64 systems? Although I have a x86_64 desktop, it can be a bit problematic when a x86_64 system is not available. Such issues do not get detected during the Koji build resulting in violation of the packaging guidelines. Comments? Cheers, Debarshi -- Free software for the Indian community: * ftp://fedora.glug-nith.org/ * http://fedora.glug-nith.org/ * http://gnu.glug-nith.org/ * http://mirror.wbut.ac.in/

4 5

ext4dev oddity
by Trever L. Adams 29 Aug '08

29 Aug '08

I am having some pretty good success on some different machines with ext4. However, I am getting this message: EXT4-fs error (device dm-0): ext4_mb_generate_buddy: EXT4-fs: group 717: 23410 blocks in bitmap, 23411 in gd EXT4-fs error (device dm-0): ext4_mb_generate_buddy: EXT4-fs: group 721: 19309 blocks in bitmap, 19333 in gd What do I need to do to help debug this, if anything, and how do I find out which files or directories are affected? Thank you, Trever Adams -- "Yesterday is gone. Tomorrow is too far for me. Today is what I have, and what I fight for." -- Unknown

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Application for GSoC Project - Package WebUI
by Pavel Khardikov 28 Jul '08

28 Jul '08

Hi, Thorsten! I'm interested in the GSoC Package WebUI project idea. I am well acquainted with the basic principles and methods of working with repoview and pkgdb. I have a desire to make a site that provides information on all packages and has convenient tools for searching, grouping, resolving dependencies, etc... I consider that the best variant for development of the new application is the use or improvement repoview or pkgdb. I think that http://packages.ubuntu.com/ and http://www.debian.org/distrib/packages are very convenient and functional tools. I have a good experience in user interface design and development of web applications: -- scripting languages: perl, python, php and the popular frameworks for them, like Catalyst, Django and ZendFramework -- XML, HTML / XHTML, CSS, semantic and cross-browser making-up -- graphic tools What is the main criteria for application? http://fedoraproject.org/wiki/SummerCoding/2008/Ideas -- Best regards. Pavel Khardikov

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[RFC]InstantMirror Redesign
by Kulbir Saini 08 Jul '08

08 Jul '08

Hi all! InstantMirror currently works fine but involves a lot of configuration and that might actually stop someone from use it. I came across this project recently and found it really interesting. After reading the discussions on fedora-devel, warren's journal, InstantMirror wiki, I thought that I would come up with a redesign that would be more yum friendly and will involve minimal configuration for setup. Below is my point of view of new InstantMirror design. Note: You can access the design proposal here (http://iyum.saini.co.in/index.php/InstantMirror) also. Redesign Proposal ***************** Basically the most obvious use case of InstantMirror is to be used by Yum for updates. I propose to develop InstantMirror keeping in mind that it should integrate with Yum. In the new design I am using not multiple programs to get the job done as proposed by warren here (https://fedorahosted.org/InstantMirror/wiki/InstantMirrorDaemon). There will be only one daemon that will continuously listen to requests and if necessary it will fork itself. Below is the method of operation for the daemon. Method of Operation ******************* 1. InstantMirror gets a client request for a URL. 2. Check: if URL is not in (RPM, metadata file) * Then its none of our business. * Let proxy handle it the normal way. * Done and exit. 3. Error Check: if remote host is not reachable * Check: if RPM/metadata is available in cache 1. Stream the RPM/metadata from cache. 2. Done and exit. * else 1. Throw a "No route to host" error. 2. Done and exit. 4. Check: if RPM/metadata is available in cache * Check: if RPM/metadata in cache is older than upstream 1. Delete RPM/metadata from cache. 2. Download and stream. 3. Done and exit. * Check: if RPM/metadata matches upstream or newer than upstream 1. Stream the RPM/metadata from cache. 2. Done and exit. * Check: if RPM/metadata does not exsit upstream 1. Delete RPM/metadata from cache. 2. Throw a "Not found" error. 3. Done and exit. 5. Check: if RPM/metadata is not available in cache * Download and stream. * Done and exit. Download Process **************** In the above operation everything is clear except the download process. If a file is already being downloaded from upstream and another client request come in for the same file, then we have two options to continue downloading 1. Download via only first instance (master) and let the other instances (slaves) copy the partial content to the client. The disadvantage is that the slaves will be throttled by the master's download speed. 2. The other instance also starts downloading from upstream and append data to the local file. Stream the data to clients when download is finished. This is quite complicated and as of now I don't even know how to do it or even if its feasible to do it. I am currently trying to get the hang of downloading process. The above design is more or less same as the previous design with may be a bit of improvements. Now, we have decided to have two types of InstantMirror. 1. InstantMirror to be used by a small group of people. In this case we have to get rid of all the dependencies like squid, apache because for a small setup nobody is going to configure squid and apache. So, we use a proxy server implemented in python for this kind of setup and integrate InstantMirror with it in caching mode. So that it becomes easy to setup and don't require squid, apache or whatever else. 2. InstantMirror to be used by an organization. As almost all the organization ( i am focusing more on institutes/universities here) use a common proxy server to access the Internet, we will have the InstantMirror which can be integrated with squid. There will be no difficulty in setup as the people already use squid (assuming squid is widely used in Unix/Linux world) and know how to configure it. We can't use proxy server implemented in python here because no organization would ever agree to use a stripped down version of proxy server instead of squid. If the above sounds interesting, then I also propose to build a Yum plugin (say Yum Client) which will interact with InstantMirror sitting near the proxy server. Yum Client will periodically update the InstantMirror with the information like which packages are very frequently updated by user (kernel, kde, yum), which packages are never updated or updated rarely (vim). Using this information InstantMirror will optimize the download queue and using some very simple techniques for queuing a download etc., we can optimize the bandwidth usage. Imagine a university with thousands of Linux users and everyone is updating their system weekly. GBs of bandwidth is being wasted every week due to subsequent downloads of the same package. If you have any suggestions for improvements, comments on the current design or you want to criticize the design, please reply back. They would really help me to improve. InstantMirror - https://fedorahosted.org/InstantMirror/wiki InstantMirrorDaemon - https://fedorahosted.org/InstantMirror/wiki/InstantMirrorDaemon InstantMirror needs a rethink - http://www.redhat.com/archives/rhl-devel-list/2008-January/msg02341.html Warren Togami's Journal - http://wtogami.livejournal.com/20536.html PS : This is my first RFC, if i wrote it badly please forgive me :) ------------------------------------------------------- Thank you, Kulbir Saini, Computer Science and Engineering, International Institute of Information Technology, Hyderbad, India - 500032. My Home-Page: http://saini.co.in/ My Institute: http://www.iiit.ac.in/ My Linux-Blog: http://linux.saini.co.in/ IRC nick : generalBordeaux Channels : #fedora, #fedora-devel, #yum on freenode -------------------------------------------------------

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devel April 2008