New answers tagged disk
Ensure you're running the same kpartx versions on both hosts. There was a bug in the kpartx.rules file introduced in an update to wheezy. The latest version of kpartx fixed this regression. It might be necessary to reboot (to reload the udev rules) after upgrading kpartx.
Is udev working properly on your server? udev is the device mapper in charge of the creation of those symlinks, so it can be that it is not working, or that it is not configured properly. Is it running? (i.e. /etc/init.d/udev status) It may be that it is not configured properly, so check if your rules are OK: $ grep "disk/by-uuid" /lib/udev/rules.d/* ...
You can use this command to see disk Read and Write for specific time. like for 1min use: # dstat -tdD total 60 Value after total is in seconds.
An answer from @Rmano on another SuperUser Q&A titled: How to disable kernel probing for drive?. libata.force=2.00:disable
A file is an identifier for accessing data. The amount of data can be zero and it can usually change over time as can the data itself. To the file belongs some meta data (specific to the file system type and configuration being used) like access rights and timestamps for different types of accesses.
pfSense is currently based on FreeBSD 8.x. The ability to grow a UFS filesystem live is only coming with FreeBSD 10.x, so all this should be done from a rescue/install mode. First do a backup of your config.xml file ! To grow the pfSense root filesystem you must first properly re-size the BSD partition scheme (aka "bsd slices"): re-size the BSD partition ...
With this command the error will go away: sed -i '/ATAPI/,+1s/^/#/' /lib/udev/rules.d/60-persistent-storage.rules
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