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btrfs install...

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Btrfs is a great filesystem to use and Btrfs works great on Funtoo: I've been using Btrfs successfully on Funtoo for over a year on my file-server on 4 x 3 terabyte drives in a mirrored (RAID1) setup. I initially had only two drives but added two more when space started to run out. It couldn't have been easier to put additional drives into the RAID array. (Step 1. Plug drives into computer, Step 2. #btrfs device add /dev/sdx /export)

 

I've seen a number of improvements in Btrfs tools since I started using it and I think Funtoo may be the ideal distribution to run Btrfs on because improvements are constantly being added to the kernel so having the latest kernel, which a lot of other distros do not have, makes a difference.

 

A part of me is looking forward to a drive failure just so I can do a drive swap without any data loss (hopefully).

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howdy folks...

 

which subarch do I need to download for this CPU:

$ lscpu
Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                2
On-line CPU(s) list:   0,1
Thread(s) per core:    1
Core(s) per socket:    2
Socket(s):             1
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 42
Model name:            Intel(R) Celeron(R) CPU B820 @ 1.70GHz
Stepping:              7
CPU MHz:               808.761
CPU max MHz:           1700.0000
CPU min MHz:           800.0000
BogoMIPS:              3392.27
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              2048K
NUMA node0 CPU(s):     0,1

tia!

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Some googling tells me that's a Sandy Bridge CPU. I'm not completely certain, however, if intel64-sandybridge will work since the wiki page does say Core i3/5/7, although I can't think of any reason why it shouldn't.

 

Should you want to play it a little safer though, you could go with corei7.

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You could try

 # echo "" | gcc -march=native -v -E - 2>&1 | grep cc1

to see what "native" detects.

$ echo "" | gcc -march=native -v -E - 2>&1 | grep cc1
 /usr/lib/gcc/x86_64-linux-gnu/4.9/cc1 -E -quiet -v -imultiarch x86_64-linux-gnu - -march=sandybridge -mmmx -mno-3dnow -msse -msse2 -msse3 -mssse3 -mno-sse4a -mcx16 -msahf -mno-movbe -mno-aes -mno-sha -mpclmul -mpopcnt -mno-abm -mno-lwp -mno-fma -mno-fma4 -mno-xop -mno-bmi -mno-bmi2 -mno-tbm -mno-avx -mno-avx2 -msse4.2 -msse4.1 -mno-lzcnt -mno-rtm -mno-hle -mno-rdrnd -mno-f16c -mno-fsgsbase -mno-rdseed -mno-prfchw -mno-adx -mfxsr -mno-xsave -mno-xsaveopt -mno-avx512f -mno-avx512er -mno-avx512cd -mno-avx512pf -mno-prefetchwt1 --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=2048 -mtune=sandybridge

tia!

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Some googling tells me that's a Sandy Bridge CPU. I'm not completely certain, however, if intel64-sandybridge will work since the wiki page does say Core i3/5/7, although I can't think of any reason why it shouldn't.

 

Should you want to play it a little safer though, you could go with corei7.

 

Absolutly right Sir !

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