[CentOS] Software RAID resync

Fri May 8 06:48:30 UTC 2009
Rajagopal Swaminathan <raju.rajsand at gmail.com>

John R Pierce <pierce at ...> writes:

> 
> Les Mikesell wrote:
> > It should only take a couple of hours anyway unless there is a lot of 
> > other activity on the partition.  Something must be wrong with the 
> > controller or drive.
> >
> >   
> 
> The IOSTAT output earlier showing the drives 100% busy at 1.8MB/sec 
> tells me they are running in ISA PIO mode.  there's a issue with the 
> disk controller support and how its configured.
> 

[SOLVED]

Thanks all

I powered down the box and changed the SATA mode in BIOS f4rom Auto to 
Serial ATA. That did the trick


cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sdb1[1] sda1[0]
      104320 blocks [2/2] [UU]
        resync=DELAYED

md1 : active raid1 sdb2[1] sda2[0]
      4096448 blocks [2/2] [UU]
        resync=DELAYED

md2 : active raid1 sdb3[1] sda3[0]
      484182912 blocks [2/2] [UU]
      [=>...................]  resync =  5.6% (27346752/484182912)
finish=68.6min speed=110970K/sec

unused devices: <none>

======= iostat -x 5 outpur (4th or 5th one)

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           0.00    0.00    2.60    0.00    0.00   97.40

Device:         rrqm/s   wrqm/s   r/s   w/s   rsec/s   wsec/s avgrq-sz avgqu-sz
  await  svctm  %util
sda            1752.89     0.00 259.68  0.00 257584.03     0.00   991.93    
2.47    9.52   3.85  99.86
sda1              0.00     0.00  0.00  0.00     0.00     0.00     0.00     0.00
   0.00   0.00   0.00
sda2              0.00     0.00  0.00  0.00     0.00     0.00     0.00     0.00
   0.00   0.00   0.00
sda3           1752.89     0.00 259.68  0.00 257584.03     0.00   991.93    
2.47    9.52   3.85  99.86
sdb               0.00  1752.69  0.00 259.68     0.00 257609.58   992.02    
1.51    5.80   3.85  99.86
sdb1              0.00     0.00  0.00  0.00     0.00     0.00     0.00     0.00
   0.00   0.00   0.00
sdb2              0.00     0.00  0.00  0.00     0.00     0.00     0.00     0.00
   0.00   0.00   0.00
sdb3              0.00  1752.69  0.00 259.68     0.00 257609.58   992.02    
1.51    5.80   3.85  99.86
md2               0.00     0.00  0.00  0.00     0.00     0.00     0.00     0.00
   0.00   0.00   0.00
md1               0.00     0.00  0.00  0.00     0.00     0.00     0.00     0.00
   0.00   0.00   0.00
md0               0.00     0.00  0.00  0.00     0.00     0.00     0.00     0.00
   0.00   0.00   0.00
dm-0              0.00     0.00  0.00  0.00     0.00     0.00     0.00     0.00
   0.00   0.00   0.00


=========== hdparm -tT output

hdparm -tT /dev/sda

/dev/sda:
 Timing cached reads:   27444 MB in  1.99 seconds = 13802.85 MB/sec
 Timing buffered disk reads:  378 MB in  3.01 seconds = 125.67 MB/sec
[root at localhost ~]# hdparm -tT /dev/sdb

/dev/sdb:
 Timing cached reads:   27116 MB in  1.99 seconds = 13636.74 MB/sec
 Timing buffered disk reads:  398 MB in  3.01 seconds = 132.35 MB/sec
[root at localhost ~]#             


Thanks again

Regards

Rajagopal