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Fixing Firefox stalling in Gentoo
Filesystem mught be blocking sync, try to adjust values nano -w /etc/sysctl.d/98-caching.conf 128MB and 10% ratio vm.dirty_background_bytes = 134217728 vm.dirty_ratio = 10
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Setting up subversion over ssl and nginx on debian
Subversion supports DAV protocol access only with Apache server. To get it running with nginx, apache has to be installed on the same system. To start, install apache and svn support apt-get install apache2 libapache2-svn For apache and nginx web servers to coexist on the same computer and running at the same time, they would […]
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Migrating SVN repository to Git preserving history
After spending number of hours trying to move a simple single branch SVN repository to Git that can be accessed over https, here are the steps taken. Assume my_svn_repository is defined by url https://127.0.0.1/svn/my_svn_repository. First, a list of all svn committers is needed. Save the list in a file ./authors.txt user1 = user1 <user1@someserver.com> user2 […]
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Latex capacity exceeded
This latex code triggered Tex capacity exceed error: \documentclass[10pt]{article} \usepackage{pgfplots} \pgfplotsset{my style/.append style={axis x line=middle, axis y line=middle, xlabel={$x$}, ylabel={$y$}, axis equal }} \begin{document} \begin{tikzpicture} \begin{axis}[my style, xtick={-3,-2,…,3}, ytick={-3,-2,…,3}, xmin=-3, xmax=3, ymin=-3, ymax=3] \end{axis} \end{tikzpicture} \end{document} Fix was to edit config file nano -w /usr/share/texmf-dist/web2c/texmf.cnf and edit main_memory and pool_size parameters fmtutil-sys –all
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Btrfs raid6
See archlinux for more… Create btrfs filesystem using raid6 for data and and raid 10 for metadata mkfs.btrfs -d raid6 -m raid10 -L alexandria_btrfs /dev/vd[bcdefghijk] Mount newly created partition with mount /dev/sdb /mnt/md0 Check file system usage with: btrfs filesystem df /mnt/md0 Removing devices Remove a drive from the file system. This should rebalance the […]
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Btrfs with encription
Make sure btrfs support is installed in your kernel File systems —> Btrfs filesystem Install needed packages emerge -av sys-fs/btrfs-progs sys-fs/cryptsetup Make sure the following flags are enabled for sys-fs/cryptsetupgcrypt: nls python udev pwquality. dev-libs/libpwquality is used for password quality checking. Prepare disk: parted -a optimal /dev/sdX (parted) help (parted) print (parted) mklabel gpt (parted) […]
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Ext4 HD recovery
To check superblock fsck.ext4 -v /dev/sdX1 If there is superblock corruption, the above command will output something like this: The superblock could not be read or does not describe a correct ext4 filesystem. If the device is valid and it really contains an ext4 filesystem (and not swap or ufs or something else), then the […]
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exFat on linux
make sure exfat fuse and utils are installed on the system emerge -av sys-fs/exfat-utils sys-fs/fuse-exfat sys-fs/dosfstools exFAT seems not handle well the switches -pgo that relate to permissions. When using standard switches -avgh, it will trigger errors rsync: mkstemp “/run/media/3461-3338/ki.txt.ws6eA5” failed: Function not implemented (38) Instead when coping use the following flags rsync -rltDv [SRC] […]
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Dynamic DNS
There are few free dynamic DNS options such as dnsdynamic.org freedns.afraid.org ydns.eu dtdns.com duckdns.org noip.com Install ddclient. emerge -av net-dns/ddclient Let’s focus on freedns.afraid.org. Open an account and pick a domain name. Prepare config file nano -w /etc/ddclient/ddclient.conf Enter information on the subdomain name you just created. daemon=3600 syslog=yes protocol=freedns use=if, if=eth0 ssl=yes use=web, web=myip.dnsomatic.com […]
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smartmon configuration
emerge -av sys-apps/smartmontools add to init rc-update add smartd default nano -w /etc/smartd.conf # DEVICESCAN For all disks with SMART capabilities. # # -o off Turn off automatic running of offline tests. An offline test # is a test which may degrade performance. # # -n standby Do not spin up the disk for the […]