The task for today was to figure out what kind of hardware was in a bunch of cases without open them all.
I know there are a lot tools for windows available out there, but finding something running on an linux system was not that easy - at least for me.
After a while, I had verified that hardinfo was the tool I am searching for. But this simple leads me to another question and problem. "What kind of available live linux cds has this application available directly?".
It turned out that this is not an easy question to answer. But after a lot of download, try and validate runs, I found one, tahrpup a puppylinux flavored release.
I really hope you will find this post and this will save you ... well, half of a day of evaluation.
I just got the following entry on my boot up today:
systemd[1]: Failed to start Create Volatile Files and Directories.
After a while of searching using my favorit searchengine, I (as usual ;-)) found the most fitting solution in the bbs.archlinux.org.
The solution is given in the manpage of the tmpfiles.d.
tmpfiles.d(5) wrote:
If the administrator wants to disable a configuration file supplied by the vendor, the recommended way is to place a symlink to /dev/null in /etc/tmpfiles.d/ bearing the same filename.
So all you have to do is:
# sudo su
# cd /usr/lib/tmpfiles.d
# cp journal-nocow.conf journal-nocow.conf.bak
# rm journal-nocow.conf.bak
# ln -s /dev/null journal-nocow.conf
And thats it. Fingers crossed you system will boot without errors.
Everytime the kernel gets updated, my system only reaches the busybox afterwards.
Currently, I have no idea why this happens exactly. But at least, I know how to handle it.
The zfs module is loaded, so all you need to do is to execute
zpool import -f
, followed by an
zpool export
.
It looks like there is a problem with exporting the pool while rebooting, or maybe an error while importing. It is marked as "not exported correctly", that is why booting fails. After the two commands from above, you can enter
The Linux team is happy to announce a new release of OpenZFS on Linux.
The 0.6 4 release adds support for 6 new feature flags, multiple new
properties, asynchronous IO, support for Linux kernels up to 4.0 and
more. NEW FUNCTIONALITY
* Compatible with kernels up to Linux 4.0.
* New feature flags (additional details below):
- spacemap_histogram
- extensible_dataset
- bookmarks
- enabled_txg
- hole_birth
- embedded_data
* New asynchronous I/O (AIO) support.
* New fallocate() FALLOC_FL_PUNCH_HOLE support.
* New fragmentation metric in 'zpool list'.
* New LZ4 compression of meta data.
* New "redundant_metadata" property controls desired redundancy level.
* New "overlay" property controls behavior for non-empty mount points.
* New 'zpool list -v' shows individual disk capacity.
* New 'zpool get -H' (scripted mode) support.
* New 'zpool create -t' creates a pool with a temporary name.
* New arc_summary.py script from FreeNAS.
* New bash completion support.
* New DTRACE_PROBES integrated with Linux tracepoints.
* New compressed block histograms with zdb.
* New verbatim pool imports with zdb.
What a release, thank you very much for the work and the damn long list of new features, improvements and bug fixes!