Filesystem corruption

[compdoc]

On 6/26/19 9:13 AM, Volker Wysk wrote:

> It's a feature of the device-mapper, called "LVM cache" or "dm-cache".
> It was quite complicated to set up, especially to get the cache
> activated at boot time.

Intel used to have a feature that allowed you to use a small ssd as a 
cache for the system. Back when small ssd were still expensive.

I used it a year, and it blew up twice during that time and had to be 
rebuilt. Worked great otherwise. Never lost any data.

But with ssd speed, reliability, and low prices, its more reliable to 
boot from them directly and use the hdd as storage. Anything complicated 
to set up means less reliable, harder to trouble-shoot.

SSDs are still evolving. Now they make them with an m.2 connector, and 
the speeds are incredible. They've stripped off the sata interface and 
thin cable, and now attach them directly to a 4-lane pci-e bus.