This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.
Step 1 - Enable NBD on the Host
modprobe nbd max_part=8
Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
#!/usr/bin/env bash | |
# --slave /usr/bin/$1 $1 /usr/bin/$1-\${version} \\ | |
function register_clang_version { | |
local version=$1 | |
local priority=$2 | |
update-alternatives \ | |
--install /usr/bin/llvm-config llvm-config /usr/bin/llvm-config-${version} ${priority} \ |
alt + command + p + r + power
sudo pmset -a hibernatemode 0 standby 0 autopoweroff 0
Default:
sudo pmset restoredefaults
pmset -g
diff -urN a/src/wl/sys/wl_cfg80211_hybrid.c b/src/wl/sys/wl_cfg80211_hybrid.c | |
--- a/src/wl/sys/wl_cfg80211_hybrid.c 2015-09-12 16:39:28.000000000 +0900 | |
+++ b/src/wl/sys/wl_cfg80211_hybrid.c 2015-09-12 16:50:44.908084821 +0900 | |
@@ -2150,8 +2150,12 @@ | |
WL_DBG(("\n")); | |
if (status == WLC_E_STATUS_SUCCESS) { | |
- err = wl_bss_roaming_done(wl, ndev, e, data); | |
- wl->profile->active = true; | |
+ if (!wl_bss_roaming_done(wl, ndev, e, data)) { |