kernel 3.10, software raid1 works fine… kernel 4.18, software raid1 seems to work fine… kernel 4.19, software raid1 miserably fails… it starts to sync raid1 discs becomes slower and slower and finally „120 seconds….“ then comes to a halt. i […]
============ OS and Kernel Linux server4.localdomain 4.15.7 #1 SMP Sun Mar 4 16:43:40 CET 2018 x86_64 x86_64 x86_64 GNU/Linux ============ filesystem used Filesystem Type Size Used Avail Use% Mounted on devtmpfs devtmpfs 30G 0 30G 0% /dev tmpfs tmpfs 30G […]
REM delete all mapped network drives net use * /DELETE /Y REM map two drives net use W: „\\192.168.0.233\SharedFolderA“ /persistent:yes /user:usernameA PaSsWorDA net use T: „\\192.168.0.231\SharedFolderB“ /persistent:yes /user:usernameB PaSsWorDB what you need to know: windows CAN NOT establish two connects […]
what? a simple file wise rsync based backup of your system (currently without boot partition or boot manager) that: does exclude mountpoints on debian and centos – thus really only backups your internal root partition /dev/sda (probably) automatically creates subdirectory […]
While the Supermicro X8DT3 CPU: 2x Xeons with 2x Intel Xeon(R) CPU E5504 @ 2.00GHz and RAM: 64GB RAM EEC Dual-Powersupply is a great mainboard with java remote web IPMI console that allows you to access the bios and remote […]
You might want to checkout bash only equential write/read benchmark. You might want to checkout iozone in c harddisk benchmark. this benchmark is especially useful if you need to measure how java is performing on your harddisk/filesystem/os (linux only?) combination. […]
yes ext3 is old – but it works and you can undelete files – which can come in handy – because nobody is perfect – except god – and nobody should assume he/she is god. it supports filesystems up to […]
ext3+gnu_linux+samba = fast and reliable fileserver. WARNING! Security problems Versions from Version 3.5.0 to 4.6.4 (recent in May 2017 ) are affected and need to be patched! patches are available from: https://www.samba.org/samba/patches/ Unfortunately EVEN Debian9 (!!!! GUYS FIX THAT FAST […]
maybe cacti and co is too complicated and looks a little outdated… collectd might be just what you are looking for 🙂 „The main objective of this is to develop an easy to use and customizable web interface for Collectd […]
The Enterprise Volume Management System (EVMS) Project has the goal of providing unparalleled flexibility and extensibility in managing storage. It represents a new approach to logical volume management for Linux. The architecture introduces a plug-in model that allows for easy […]
you should setup harddisk encryption during setup. to add an encrypted /home partition afterwards might be possible but a lot more effort. scroll very down if you want to know how to encrypt an usb sticks … needless to say […]
harddisks… are blackboxes of data – if something fails… you do not repair – you replace. 65% of all harddisk failurs can be announced with smart. wohoo! so don’t rely on it 😀 # apt based systems ubuntu/debian apt-get install […]
btrfs is used by SUSE12 for the /root partition – where it is doing daily snapshots of the installed OS. It has more functionality built-in than just storing files. This article wants to take btrfs for a test-drive. Video Tutorials: […]
update: extundelete works well on ext3 but kind of failed me on ext4. tools to try: http://trinityhome.org/Home/index.php?wpid=61&front_id=12 get an overview: what harddisk is what? lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdd 8:48 0 3.7T 0 disk sdb 8:16 […]
can be easily checked via: root@debian9:~# cat /proc/filesystems nodev sysfs nodev rootfs nodev ramfs nodev bdev nodev proc nodev cpuset nodev cgroup nodev cgroup2 nodev tmpfs nodev devtmpfs nodev debugfs nodev tracefs nodev securityfs nodev sockfs nodev bpf nodev pipefs […]
iSCSI it is possible to tunnel SCSI through TCP/IP – allowing adding ressources of storage-servers directly – as if it was a local harddisk or partition. The isci-initiator (client) can „partition-and-format-over-network“ the iscis-target (harddisks or files acting as aprtitions on […]
The good news is: It supports OSX and Linux now. Windows & Linux Servers Microsoft Exchange, Microsoft SQL, SharePoint & Active Directory Microsoft Azure & Amazon EC2 cloud workloads Adding a machine running Windows Adding a machine running Linux Adding […]
in general backup! backup! backup! before fiddeling with partitions and the filesystem… logical volumes basically allow you to span partitions over several disks/partitions as well as resize those partitions. windows calls this „dynamic partitions“. it will take some practice to get […]
there is an confusing amount of programs under linux that can do partitions – it is not really clear – when you need what or if you need them at all. this article should get you some info if you […]
yeah i know i sometimes make fun of distributions that have like a partition for every /root/folder but well yes it has it’s reasons. suse12 uname -a; # tested with Linux suse 4.4.21-69-default #1 SMP Tue Oct 25 10:58:20 UTC […]
the commands used for xfs are different. this is only valid for ext3/ext4. preparation: you should move your /home to a separate partition. Warning! You will need to have „physical“ access to the server’s console in order to perform these […]
„XFS is a high performance journaling filesystem which originated on the SGI IRIX platform.“ SGI (Silicon Graphics) is out of business since 2009. „The addition of 3D graphic capabilities to PCs, and the ability of clusters of Linux– and BSD-based […]
backups of a life system under linux – many answers and almost a science of itself. i guess you will have to try a handful of them out to see if they work for you and fit your needs. this […]
this is a crowd-funding project that still needs funding…. if you can help! please chip in 🙂 https://www.crowdsupply.com/gnubee/personal-cloud-1 Tour of LibreCMC and openmediavault We took a screencast of LibreCMC and some screenshots of openmediavault running on the GnuBee Personal Cloud […]
MY RECOMMENDATION: WHO CARES IF THE NAS IS DOING A AUTOMATIC REBOOT AT SUNDAY 3 o’CLOCK IN THE MORNING AND CHECKING 2-3TB OF EXT3 FILESYSTEM? NO ONE! RELIABILITY SHOULD BE THE TOP1 PRIORITY OF ANY FILESYSTEM. MAYBE SPEED CAN BE […]
find out what the drive you want to backup is called, in this case it’s an USB Stick /dev/sdb you could use gparted which gives you a nice graphical view of where is what. or you use: lsblk NAME MAJ:MIN […]
unfortunately if you would use du -h (for human readable) you lose the „sort for size“ mechanism. you just see what is the largest – but not exactly how large. # list 30 biggest files or directories (qnap tested) du […]
Western Digital RE4-GP 2TB Drive Problems DO NOT BUY FROM AMAZON! THEY MAKE BAD PRODUCTS LOOK GOOD! + THEY DO NOT PAY FAIR TAXES! THEY AVOID TAXES IN EUROPE AND PAY AS LITTLE AS THEY WANT IN LUXEMBOURG! (LuxLeaks!) ALTERNATIVE: SPEND […]
to mount a NFS share on boot you need to specify it in /etc/fstab (/etc/init.d/rc.local -> script did not work for me in debian-jessie) apt-get install nfs-common; # install basic software needed to mount nfs sudo vim /etc/fstab # add […]
We are talking about that piece of hardware: while this is a neat idea… i had trouble getting NFS compiled into the image/kernel… but up to that point, things worked pretty well 😀 another thing is: to rely on the […]