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piątek, 7 listopada 2008

software raid 10 at linux

Today I was looking for some performace tests at linux filesystems, and I found some pages, where raid 10 at linux has been done by merging two raid 1 into raid 0, or simmilar...

Maybe some of you does not know, that linux mdadm support raid10, as you can see below:
# mdadm --create /dev/md2 --level 10 --raid-devices=4 /dev/sda5 /dev/sdb5 /dev/sdc5 /dev/sdd5
mdadm: array /dev/md2 started.

and check:
# cat /proc/mdstat
Personalities : [raid1] [raid10]
md2 : active raid10 sdd5[3] sdc5[2] sdb5[1] sda5[0]
4481920 blocks 64K chunks 2 near-copies [4/4] [UUUU]
[======>..............]  resync = 32.2% (1445184/4481920) finish=0.3min speed=160576K/sec

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