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[arch-general] [linux] ext4 data corruption bug
by Christian Hesse 24 Oct '12

24 Oct '12

Hello everybody, a thread has been started on lkml discussing a serious ext4 data corruption bug in latest stable kernels. [0] Looks like the root cause is not really clear so far. Reverting the commit in question should fix the problem though. [0] https://lkml.org/lkml/2012/10/23/690 -- main(a){char*c=/* Schoene Gruesse */"B?IJj;MEH" "CX:;",b;for(a/* Chris get my mail address: */=0;b=c[a++];) putchar(b-1/(/* gcc -o sig sig.c && ./sig */b/42*2-3)*42);}

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[arch-general] autofs issue after location change
by Genes MailLists 24 Oct '12

24 Oct '12

I had used one of my autofs mounts last night on my laptop. This morning I put it to sleep and moved to a different location where that nfs server is not available. I am fully updated to testing repo (as of last night anyway :-) ). (i) pacman hung (tho I understand from https://projects.archlinux.org/pacman.git/commit/?id=e183522e3168c4a31103b3… that this may be fixed .. tho that was quite quite some time back so maybe something else is happening. (ii) Alerted by the hang - I tried to restart autofs via systemctl restart autofs Perhaps I didn't wait long enough - but this did not complete. (iii) So I rebooted pc. The shutdown hung after systemd reported [ok] for shutting off remote file systems. Again I only waited a few minutes - perhaps it would have timed out after sufficiently long - but how long? (iii) was especially surpising to me - I thought systemd would kill the daemon sooner. Can anyone share What is the right way of dealing with this 'dead autofs mount' issue? Thanks gene/

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[arch-general] Leafnode and Systemd
by Whiskers 23 Oct '12

23 Oct '12

Leafnode-2 <http://www.dt.e-technik.uni-dortmund.de/~ma/leafnode/beta/> is a local caching proxy nntp server. It isn't among Arch's packages, but I have been using it for some years on another distro (Mandrake/Mandriva). Systemd launches xinetd on start-up: $ cat /usr/lib/systemd/system/xinetd.service [Unit] Description=A secure replacement for inetd After=network.target [Service] ExecStart=/usr/sbin/xinetd -dontfork ExecReload=/bin/kill -HUP $MAINPID [Install] WantedBy=multi-user.target $ And xinetd has this file for Leafnode: $ cat /etc/xinetd.d/nntp service Leafnode { flags = NAMEINARGS NOLIBWRAP per_source = 3 port = 119 socket_type = stream protocol = tcp user = news server = /usr/sbin/tcpd server_args = /usr/local/sbin/leafnode type = UNLISTED wait = no instances = 7 only_from = 127.0.0.1 } (actually generated using webmin, but in accord with the instructions in the README and INSTALL files in the Leafnode tarball). But this doesn't allow any user to access Leafnode; I suspect this is because /usr/sbin/tcpd doesn't exist (being a part of tcp-wrappers which Arch no longer has). (I can run the Leafnode components fetchnews and texpire as root; but attempts to connect to the local server result in "connection refused"). There are no daemons launched from /etc/rc.conf. I have installed ufw as a substitute for tcp-wrappers and created this file: $ cat /etc/ufw/applications.d/ufw-newsserver [Leafnode] title=Leafnode description=NNTP caching proxy server ports=119/tcp $ and have these rules in force, at least one of which should allow local access to leafnode, I think: # ufw status Status: active To Action From -- ------ ---- Anywhere ALLOW 127.0.0.1 newsserver ALLOW 127.0.0.1 127.0.0.1 119/tcp ALLOW 127.0.0.1 Leafnode ALLOW 127.0.0.1 Rather than install tcp-wrappers on my Arch system, I'd like to use whatever the proper "server" is nowadays instead of /usr/sbin/tcpd - but what is it? Or is there something other than xinetd that works as a 'super server' with systemd? I've only been using Arch for a few months, and it's a bit of a challenge getting used to the Arch Way - particularly while it's changing over to systemd etc - so please be patient with me if I've missed something simple or made a newbie mistake! -- -- ^^^^^^^^^^ -- Whiskers -- ~~~~~~~~~~

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[arch-general] Multiple Wired Profiles with Systemd
by Alper Kanat 23 Oct '12

23 Oct '12

Hey All, I just switched to systemd. I work on an Arch Linux Virtualbox VM which runs on Mac OS X. I assigned 3 NIC's to that VM and 2 of them have ethernet-dhcp profiles defined and set in /etc/conf.d/netcfg to be started at boot. $ cat /etc/conf.d/netcfg NETWORKS=(public local) However on boot, I see messages like the following: Oct 23 15:18:52 starbucks netcfg-daemon[168]: :: public up Interface eth0 does not exist Oct 23 15:18:52 starbucks netcfg-daemon[168]: :: local up Interface eth1 does not exist Oct 23 15:18:52 starbucks netcfg-daemon[168]: [fail] Oct 23 15:18:52 starbucks systemd[1]: netcfg.service: main process exited, code=exited, status=1 Oct 23 15:18:52 starbucks systemd[1]: Failed to start Netcfg multi-profile daemon. Oct 23 15:18:52 starbucks systemd[1]: Unit netcfg.service entered failed state. Oct 23 15:18:52 starbucks systemd[1]: Starting Network. Oct 23 15:18:52 starbucks systemd[1]: Reached target Network. Oct 23 15:18:52 starbucks systemd[1]: Starting Apache Web Server... Checking the interfaces via ifconfig shows that none of them are up. If I start netcfg service manually, both interfaces will be up successfully: $ sudo systemctl start netcfg $ sudo systemctl status netcfg netcfg.service - Netcfg multi-profile daemon Loaded: loaded (/usr/lib/systemd/system/netcfg.service; enabled) Active: active (exited) since Tue, 23 Oct 2012 15:33:02 +0300; 18min ago Process: 354 ExecStart=/usr/bin/netcfg-daemon start (code=exited, status=0/SUCCESS) CGroup: name=systemd:/system/netcfg.service ├ 408 dhcpcd -qL -t 60 eth0 └ 474 dhcpcd -qL -t 60 eth1 I checked the forum to see if there are any solutions. Tried multi-user services by enabling with the following commands resulted as the same: $ sudo systemctl enable netcfg@public $ sudo systemctl enable netcfg@local Found out some threads on the forum that suggests to copy service definitions and overwrite them but that didn't look like a solution to me. All tickets created at flyspray was about 1 wireless - 1 wired setups. Some of them are closed, marked as "Not a bug". Anyone having the same issue? Any suggestions? Currently I enabled netcfg.service. Sometimes all NICs are disabled, sometimes both are enabled. Mostly however only 1 NIC (the first one) is up. --- Quis custodiet ipsos custodes?

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[arch-general] Modify installed package version
by gt 23 Oct '12

23 Oct '12

Hey guys is there a way to modify an installed package's version using pacman, instead of upgrading the package. That is, only change the version in the database, but don't actually upgrade a package. Alternatively can I rename the package directory inside /var/lib/pacman/local/ and %VERSION% string inside the desc file to achieve the same?

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[arch-general] systemd and fancontrol
by siriusb＠linuxmail.org 23 Oct '12

23 Oct '12

Hi All, I've just switched to systemd from initscript and I can't resolve an issue: fancontrol fails to run at boot time, but it works properly when manually started. Logs: UNIT LOAD ACTIVE SUB JOB DESCRIPTION colord.service loaded failed failed Manage, Install and Generate Color Profiles fancontrol.service loaded failed failed Fan control daemon # systemctl status fancontrol fancontrol.service - Fan control daemon Loaded: loaded (/etc/systemd/system/fancontrol.service; enabled) Active: failed (Result: exit-code) since Tue, 23 Oct 2012 07:23:42 +0200; 4min 53s ago Process: 434 ExecStart=/usr/sbin/fancontrol (code=exited, status=1/FAILURE) CGroup: name=systemd:/system/fancontrol.service Oct 23 07:23:51 arch fancontrol[434]: Controls hwmon1/device/fan2_input Oct 23 07:23:51 arch fancontrol[434]: MINTEMP=35 Oct 23 07:23:51 arch fancontrol[434]: MAXTEMP=45 Oct 23 07:23:51 arch fancontrol[434]: MINSTART=155 Oct 23 07:23:51 arch fancontrol[434]: MINSTOP=160 Oct 23 07:23:51 arch fancontrol[434]: MINPWM=155 Oct 23 07:23:51 arch fancontrol[434]: MAXPWM=210 Oct 23 07:23:51 arch fancontrol[434]: Device path of hwmon1 has changed Oct 23 07:23:51 arch fancontrol[434]: Device name of hwmon1 has changed Oct 23 07:23:51 arch fancontrol[434]: Configuration appears to be outdated, please run pwmconfig again I thought it is a timing issue, so I tweaked fancontrol.service, but didn't helped: # cat /etc/systemd/system/fancontrol.service .include /usr/lib/systemd/system/fancontrol.service [Unit] Requires=sensord.service After=sensord.service Any advice? Thanks. zs

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Re: [arch-general] [arch-dev-public] WARNING: changes to screen in testing
by Geert Hendrickx 23 Oct '12

23 Oct '12

On Mon, Oct 22, 2012 at 14:13:22 -0400, Dave Reisner wrote: > Surely there's a way to tell screen to look in a different place > for sockets. Figure out the command to do so and advertise it in > a post_upgrade message as a crutch until the user can restart > their screen sessions. Or symlink old to new location? Worked for me. Geert -- geert.hendrickx.be :: geert(a)hendrickx.be :: PGP: 0xC4BB9E9F This e-mail was composed using 100% recycled spam messages!

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[arch-general] neo - german keyboard layout
by G. Schlisio 22 Oct '12

22 Oct '12

hi list, i played around with neo2, an alternative kbd layout optimized for german. in my kde environment. the main concept of neo is using meta keys to shift between layers. for me, the meta4 key is not working on either side. i found some suggestions to solve this problem, but nothing worked so far. anybody out there knowing, how to fix this? and how can i enable neo in initramfs, for input of my encryption pw? thanks georg

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[arch-general] Is it proper that I add some material about raspberry pi on Arch over the Archwiki?
by Victor Silva 22 Oct '12

22 Oct '12

Guys some time ago I got a Pi. I know there is much to be done with it, so far I`ve installed arch on it, running a seed box at the moment. The idea would use the power of archwiki to have people sharing information and having cool ideas for raspberry pi. I`ve seen guys doing great stuff like a solar powered py running SETI@Home, mods to run pinball machines and so on. But all this information is still scattered on the Internet making it a bit harder to people just starting up. For instance: http://www.raspberrypi-tutorials.co.uk/ http://elinux.org/RPi_Tutorials Just as example are quite scattered regarding format. So maybe we could use the community to build a great wiki. The http://archlinuxarm.org/ seems to have no wiki. (Do they use https://wiki.archlinux.org/ ?) Could one please give me some pointers of how could I start it? I tried to get some info on archlinuxarm.org website but so far no answer. http://archlinuxarm.org/forum/viewtopic.php?f=31&t=3992 Hope this can work. Regards, vfbsilva

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[arch-general] Arch on SSD!
by Andrea Crotti 22 Oct '12

22 Oct '12

I bought a crucial M4 (128GB) for my laptop, and now the idea is to move the operating system and most of the data there, keeping the other disk in the cd-bay as second disk. I formatted the SSD disk like this: Disk /dev/sda: 128.0 GB, 128035676160 bytes, 250069680 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000ee70d Device Boot Start End Blocks Id System /dev/sda1 * 2048 411647 204800 83 Linux /dev/sda2 411648 250069679 124829016 83 Linux Where sda2 is a LVM volume, but the first thing which I'm not sure is if I got the alignment correct. I didn't find anywhere what should be the alignment for my disk, and a way to check that you actually got it right (some ways only for Windows funnily). Any hint? The second thing is that at the moment I should be able to boot both disks, but the SSD now fails to load, and I'm a bit lost in the new GRUB2 configuration: MENUENTRY 'Arch GNU/Linux, with Linux core repo kernel' --class arch --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-core repo kernel-true-ad4103fa-d940-47ca-8506-301d8071d467' { load_video set gfxpayload=keep insmod gzio insmod part_msdos insmod ext2 set root='hd0,msdos5' if [ x$feature_platform_search_hint = xy ]; then search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos5 --hint-efi=hd0,msdos5 --hint-baremetal=ahci0,msdos5 ad4103fa-d940-47ca-8506-301d8071d467 else search --no-floppy --fs-uuid --set=root ad4103fa-d940-47ca-8506-301d8071d467 fi echo 'Loading Linux core repo kernel ...' linux /boot/vmlinuz-linux root=UUID=ad4103fa-d940-47ca-8506-301d8071d467 ro quiet echo 'Loading initial ramdisk ...' initrd /boot/initramfs-linux.img } All I need to do is boot from disk (hd0, 0) and then the / is on LVM /dev/ssd/root. I'm not sure, however, if this configuration is supposed to make sense or it's just autogenerated as a template.. The fstab for the SSD is this: /dev/mapper/ssd-root / ext4 rw,relatime,data=ordered,discard 0 2 # UUID=54d06c44-2b32-4969-be42-d98d2bf7e994 /dev/sda1 /boot ext4 rw,relatime,data=ordered,discard 0 2 but I've seen somewhere that ext4 might be a problem too, or is that fixed? Thanks a lot, Andrea

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