Re: mdadm 2.6 creates slow RAID 5 while mdadm 2.5.6 rocks

2008-02-26 Thread Hubert Verstraete
In case someone is interested, I'm answering to myself ... There has been a change between mdadm 2.5 and mdadm 2.6 when creating an array with superblock v1.0 and using an internal bitmap. In my configuration, the result is an internal bitmap much bigger in 2.6 than in 2.5. And it seems when

Re: mdadm 2.6 creates slow RAID 5 while mdadm 2.5.6 rocks

2008-02-11 Thread Hubert Verstraete
[EMAIL PROTECTED] wrote: Quoting Hubert Verstraete: Hi All, My RAID 5 array is running slow. I've made a lot of test to find out where this issue is laying. I've come to the conclusion that once the array is created with mdadm 2.6.x (up to 2.6.4), whatever the kernel you run, whatever the

mdadm 2.6 creates slow RAID 5 while mdadm 2.5.6 rocks

2008-02-08 Thread Hubert Verstraete
Hi All, My RAID 5 array is running slow. I've made a lot of test to find out where this issue is laying. I've come to the conclusion that once the array is created with mdadm 2.6.x (up to 2.6.4), whatever the kernel you run, whatever the mdadm you use to re-assemble the array, the array's

Re: mdadm 2.6 creates slow RAID 5 while mdadm 2.5.6 rocks

2008-02-08 Thread michael
Quoting Hubert Verstraete [EMAIL PROTECTED]: Hi All, My RAID 5 array is running slow. I've made a lot of test to find out where this issue is laying. I've come to the conclusion that once the array is created with mdadm 2.6.x (up to 2.6.4), whatever the kernel you run, whatever the mdadm you