knowledge base linux

Reload Varnish

Restarting Varnish will cause losing of existing cache with, sometimes, huge impact on working site.   If you did some change in Varnish configuration, all you need is to reread the configuration, without restart.   Asume you run Varnish on [...] »detalii Reload Varnish

exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen

I have a big server, 10 drives in RAID10 software. Upon intensive writes, I get in logs:
  [ 6546.141374] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen [ 6546.141379] ata3.00: failed command: FLUSH CACHE [...] »detalii exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen

System Thread Exception Not Handled

When trying to install Windows Server 2016 on a KVM virtualization, 64b machine, you get the error:   SYSTEM THREAD EXCEPTION NOT HANDLED   You have to modify default settings of the machine by mangling its XML config. For example: [...] »detalii System Thread Exception Not Handled

Firebird 2.5.x build with gcc7

Building Firebird SQL on GCC 7 (and 6) is not straigthforward.   Configure it to use provided ICU (paths below can be changed as you wish):   ./configure --prefix=/usr --libdir=/usr/lib64 \ --enable-raw-devices \ --enable-superserver \ --with-fbconf=/etc/firebird \ --with-fblib=/usr/lib64 \ --with-fbsecure-db=/public/data/fb/securedb [...] »detalii Firebird 2.5.x build with gcc7