greenrd
03-12-2005, 12:16 AM
Are the root devices on our servers, like /dev/sda1, backed by a device (e.g. a partition or an LVM volume), or a file, on the host?
In other words, are they phy: devices or file: devices?
The reason I ask is because, in several places I have read that it is not safe to use a journalled filesystem on a file-backed device - UNLESS the file is written synchonously - because otherwise writes might be made out-of-order, causing filesystem inconsistencies if there is a crash or power failure.
In other words, are they phy: devices or file: devices?
The reason I ask is because, in several places I have read that it is not safe to use a journalled filesystem on a file-backed device - UNLESS the file is written synchonously - because otherwise writes might be made out-of-order, causing filesystem inconsistencies if there is a crash or power failure.