Cloned partion to new drive - IO espera esmaga servidor

Question

Estou executando o Ubuntu 9.10 e recentemente precisei atualizar o HD. Eu comprei uma unidade de substituição de cache de 3 TB 7200 64mb. Criou duas partições, uma a cerca de 2GB e a outra para o restante. A máquina está rodando 64 bits e tem 24GB de memória RAM.

Usando o clonezilla, copiei a partição / da unidade antiga para a nova com a partição maior. Tudo parecia ter corrido bem. Mas saiba que quando executamos qualquer coisa, o sistema é esmagado pela atividade do HD e a utilização do servidor fica louca, mas tudo fica por dentro.

hdparm /dev/sda && hdparm -i /dev/sda && hdparm -Tt /dev/sda

/dev/sda:
 multcount     =  0 (off)
 IO_support    =  1 (32-bit)
 readonly      =  0 (off)
 readahead     = 256 (on)
 geometry      = 364801/255/63, sectors = 5860533168, start = 0

/dev/sda:

 Model=ST3000DM001-1CH166, FwRev=CC24, SerialNo=W1F24V4R
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
 BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=off
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=5860533168
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
 AdvancedPM=yes: unknown setting WriteCache=enabled
 Drive conforms to: unknown:  ATA/ATAPI-4,5,6,7

 * signifies the current active mode


/dev/sda:
 Timing cached reads:   4596 MB in  2.00 seconds = 2299.01 MB/sec
 Timing buffered disk reads:  458 MB in  3.00 seconds = 152.58 MB/sec

free
             total       used       free     shared    buffers     cached
Mem:      24741804   12299584   12442220          0     244108   10698324
-/+ buffers/cache:    1357152   23384652
Swap:     10490436          0   10490436

Agora eu irei executar algo que antes da alteração HD não causou problemas. Antes do lançamento, o sistema de processo estava com cerca de 40% de utilização. Depois de lançá-lo e depois de apenas alguns minutos ele está funcionando a 500% de utilização.

Cpu0  :  0.0%us,  0.2%sy,  0.0%ni, 24.3%id, 75.4%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu1  :  0.3%us,  0.0%sy,  0.0%ni, 80.9%id, 18.8%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu2  :  0.0%us,  0.3%sy,  0.0%ni, 16.5%id, 83.2%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu3  :  0.0%us,  0.5%sy,  0.0%ni, 24.2%id, 74.9%wa,  0.0%hi,  0.5%si,  0.0%st
Cpu4  :  0.0%us,  0.0%sy,  0.0%ni, 52.6%id, 47.4%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu5  :  0.0%us,  0.7%sy,  0.0%ni, 51.3%id, 48.0%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu6  :  0.3%us,  0.7%sy,  0.0%ni, 84.0%id, 15.0%wa,  0.0%hi,  0.0%si,  0.0%st
Cpu7  :  0.0%us,  0.0%sy,  0.0%ni, 81.9%id, 18.1%wa,  0.0%hi,  0.0%si,  0.0%st

Não consegui executar o comando hdparm -Tt porque ficou preso em espera.

Aqui está o meu fstab e fdisk só porque ....

# /etc/fstab: static file system information.
#
# Use 'vol_id --uuid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass> proc            /proc           proc    defaults        0       0
# / was on /dev/sda1 during installation UUID=f82c7af2-a461-4d21-ab46-cb579a8a7142 /               ext3    relatime,errors=remount-ro 0       1
# swap was on /dev/sda5 during installation
#UUID=c1c9c112-44e2-41cb-aaae-469f95d0ab46 none            swap    sw              0       0 UUID=3f4ae381-4335-4cc8-a553-842281c57943 none            swap    sw              0       0 /dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0
#//10.0.2.1/incoming /mnt/pickpackship cifs uid=1001,gid=1001,auto,username=samba,password=Ta2|1TtG3^1 0 0

Aqui está fdisk e parted info apenas porque ...

fdisk -l && parted -l

WARNING: The size of this disk is 3.0 TB (3000592982016 bytes).
DOS partition table format can not be used on drives for volumes
larger than (2199023255040 bytes) for 512-byte sectors. Use parted(1) and GUID
partition table format (GPT).


Disk /dev/sda: 3000.6 GB, 3000592982016 bytes
255 heads, 63 sectors/track, 364801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000842cc

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1      254557  2044729071   83  Linux
/dev/sda2          254558      255863    10490445   83  Linux
Model: ATA ST3000DM001-1CH1 (scsi)
Disk /dev/sda: 3001GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number  Start   End     Size    Type     File system     Flags
 1      32.3kB  2094GB  2094GB  primary  ext3
 2      2094GB  2105GB  10.7GB  primary  linux-swap(v1)

AJUDA