Re: "-d single" for data blocks on a multiple devices doesn't work as it should

[Gerald Hopf <gerald.hopf@nv-systems.net>]

On 24.06.2014 13:02, Roman Mamedov wrote:
> If you want to join multiple devices with a per-file granularity (so 
> that a single file is wholely stored on one given device), check out 
> the FUSE filesystem called mhddfs; I wrote an article about it some 
> time ago: https://romanrm.net/mhddfs 
Thank you very much for this excellent recommendation. I had never heard 
of this layered "filesystem" before. And I have to admit, I was 
initially quite skeptical of your mhddfs recommendation, because of... 
well... FUSE :-)

But I read your article and the mhddfs documentation and it is exactly 
the solution I had in mind (where trouble on one of the disks does never 
ever affect data on other disks). mhddfs performance is also great, 
130MB/s at only 50% load on one of the cpu's cores - it does only seem 
to be limited by the disk and not by the CPU or FUSE.

Thanks again. I will now use mhddfs for my backups. And even though I'm 
now not using btrfs for my backups, having a perfectly working backup 
solution will make it much more likely for me to use BTFS on my main 
disk array once the btrfs RAID5/6 support is slightly more complete :-)

Thanks again,
Gerald