flashcache安装使用

flashcache安装使用：

github下载源码：

https://github.com/facebook/flashcache

#yum install dkms gcc make yum-utils kernel-devel

#unzip flashcache-master.zip

#cd flashcache-master/

#make && make install && make clean

#modprobe flashcache

#lsmod | grep flashcache

flashcache 97599 0

dm_mod 99168 4 flashcache,dm_multipath,dm_mirror,dm_log

#fdisk -l --dev/oczpcie_7_0_ssd为SSD，/dev/sdb为SAS 300g机械盘

Disk /dev/oczpcie_7_0_ssd: 480.1 GB, 480136395264 bytes

92 heads, 61 sectors/track, 167100 cylinders

Units = cylinders of 5612 * 512 = 2873344 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x0006dbf6

Device Boot Start End Blocks Id System

/dev/oczpcie_7_0_ssd1 1 167101 468882174+ 83 Linux

Disk /dev/oczpcie_7_0_ssd1: 480.1 GB, 480135346688 bytes

128 heads, 128 sectors/track, 57236 cylinders

Units = cylinders of 16384 * 512 = 8388608 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sda: 146.8 GB, 146778685440 bytes

255 heads, 63 sectors/track, 17844 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000a0edb

Device Boot Start End Blocks Id System

/dev/sda1 * 1 4178 33554432 83 Linux

/dev/sda2 4178 5222 8388608 82 Linux swap / Solaris

/dev/sda3 5222 17845 101394496 83 Linux

Partition 3 does not end on cylinder boundary.

Disk /dev/sdb: 300.0 GB, 299966445568 bytes

255 heads, 63 sectors/track, 36468 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000e0cbd

Device Boot Start End Blocks Id System

/dev/sdb1 1 36468 292929178+ 83 Linux

#flashcache_create cachedev -p back -b 4k /dev/oczpcie_7_0_ssd /dev/sdb1 --创建cachedev

cachedev cachedev, ssd_devname /dev/oczpcie_7_0_ssd, disk_devname /dev/sdb1 cache mode WRITE_BACK

block_size 8, md_block_size 8, cache_size 0

Flashcache metadata will use 2459MB of your 64414MB main memory

#mount /dev/mapper/cachedev /data01 --挂载使用

参考：http://blog.sina.com.cn/s/blog_5037eacb0102v140.html

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