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Topics - epierre

1
Cubieboard v2 OS (A20 Based) / os readonly ?
January 19, 2015, 04:02:01 pm
Hello,

  For some weeks, I have my filesystem that is readwrite, but when I reboot, everything is reverted back to some point in time... help !

Linux cubie.dtdns.net 3.4.98-sun7i+ #2 SMP PREEMPT Thu Jul 10 21:11:27 CEST 2014 armv7l GNU/Linux

Quoteroot@cubie:~# df
Filesystem     1K-blocks    Used Available Use% Mounted on
/dev/root       15202848 4561532  10014532  32% /
devtmpfs          504728       0    504728   0% /dev
tmpfs             131072     176    130896   1% /run
tmpfs               5120       4      5116   1% /run/lock
tmpfs             131072       0    131072   0% /run/shm
tmpfs            1048576       4   1048572   1% /tmp


Quoteroot@cubie:~# mount
/dev/mmcblk0p1 on / type ext4 (rw,noatime,nodiratime,errors=remount-ro,commit=600)
devtmpfs on /dev type devtmpfs (rw,relatime,size=504728k,nr_inodes=126182,mode=755)
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /run type tmpfs (rw,nosuid,noexec,relatime,size=131072k,mode=755)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
configfs on /sys/kernel/config type configfs (rw,relatime)
tmpfs on /run/shm type tmpfs (rw,nosuid,nodev,noexec,relatime,size=131072k)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev,relatime,size=1048576k)


Quoteroot@cubie:~# cat /etc/fstab
# UNCONFIGURED FSTAB FOR BASE SYSTEM
/dev/mmcblk0p1  /           ext4    defaults,noatime,nodiratime,data=writeback,commit=600,errors=remount-ro        0       0


Quoteroot@cubie:~# cat /boot/uEnv.cb2
console=ttyS0,115200
root=/dev/mmcblk0p1 rootwait
extraargs=rootfstype=ext4 sunxi_ve_mem_reserve=0 sunxi_g2d_mem_reserve=0 sunxi_no_mali_mem_reserve sunxi_fb_mem_reserve=16 hdmi.audio=EDID:0 disp.screen0_output_mode=EDID:1280x720p60 panic=10 consoleblank=0
script=/boot/cb2-hdmi.bin
kernel=/boot/uImage


Quoteroot@cubie:~# cat /etc/fstab
# UNCONFIGURED FSTAB FOR BASE SYSTEM
/dev/mmcblk0p1  /           ext4    defaults,noatime,nodiratime,data=writeback,commit=600,errors=remount-ro        0       0
2
Hello,

  I am running a Cubieboard A20 with the nice distribution and kernel from @slovenia.

  I experience connectivities issues behind an ISP router which does natting:

  - with an OOTB raspberry PI this works
  - with the Cubie I have a lot of SYN ack issues.

  I first though this to be software related (changed from nginx to lighttpd) to have the same issue.

  When I access locally this is fine, when the raspi does the reverse proxy this is fine.

  I lack experience to go much further in investigating... if you could help me...

Thanks !
3
Hello,

  on raspi we can shut down hdmi to save some power.

is there a way to do so with a cubie (without running x11)?

Thanks,
4
Hello,

  I have initially installed a debian 7.1 Wheezy from a cubian image, but I had to upgrade to SID to get libusb1 and the support of a software I use.

  Now I face a problem related to upgrades:

QuoteThe following packages have unmet dependencies:
consolekit : Breaks: udev (< 204-1) but 175-7.2 is installed
E: Unmet dependencies. Try using -f.


when I do the -f install:

QuoteSince release 198, udev requires support for the following features in
the running kernel:

- inotify(2)            (CONFIG_INOTIFY_USER)
- signalfd(2)           (CONFIG_SIGNALFD)
- accept4(2)
- open_by_handle_at(2)  (CONFIG_FHANDLE)
- timerfd_create(2)     (CONFIG_TIMERFD)
- epoll_create(2)       (CONFIG_EPOLL)

Please upgrade your kernel before or while upgrading udev.

AT YOUR OWN RISK, you can force the installation of this version of udev
WHICH DOES NOT WORK WITH YOUR RUNNING KERNEL AND WILL BREAK YOUR SYSTEM
AT THE NEXT REBOOT by creating the /etc/udev/kernel-upgrade file.
There is always a safer way to upgrade, do not try this unless you
understand what you are doing!

dpkg: error processing archive /var/cache/apt/archives/udev_208-6_armhf.deb (--unpack):
subprocess new pre-installation script returned error exit status 1
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults


now only aptitude safe-upgrade can help me upgrade my distro.

would compiling myself the kernel help me ?

5
Hello,

  I have a cubieboard2 running cubian and have some case where the cubian gets stalled definetly (nginx as a rproxy that does not ACK the SYN...).
 
  I've seen there is a possibility to have a kernel watchdog, but is there a kernel that has it ?

  I've been searching for a good/clear tutorial but haven't found it yet...

  Have you any other idea/method to avoid this issue ?

Thanks,