I have an Adaptec 2410SA raid controller with RAID 1 configured on it.
The system is an AMD ATHLON 1800 CPU. With FC4 updated distro.
The system is working fine, but TOOOOOOOOOOOOO SLOOOOOWWWWWWWWWW.
Taking a view into startup messages I can see:
sda: got wrong page
sda: assuming drive cache: write through
In dmesg:
...
AAC0: kernel 4.1-0[5934]
AAC0: monitor 4.1-0[5934]
AAC0: bios 4.1-0[5934]
AAC0: serial bab115
scsi0 : aacraid
Vendor: ADAPTEC Model: UNO Rev: V1.0
Type: Direct-Access ANSI SCSI revision: 02
SCSI device sda: 156247808 512-byte hdwr sectors (79999 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 00
sda: got wrong page
sda: assuming drive cache: write through
SCSI device sda: 156247808 512-byte hdwr sectors (79999 MB)
sda: Write Protect is off
sda: Mode Sense: 03 00 00 00
sda: got wrong page
sda: assuming drive cache: write through
sda: sda1 sda2 sda3
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
...
I think changing write through into write back cache will solve the problem.
The controller utility was used to configure all caches in the drivers.
Any help about this topic?
Thanks
--
Samuel Díaz García
Director Gerente
ArcosCom Wireless, S.L.L.
CIF: B11828068
c/ Romero Gago, 19
Arcos de la Frontera
11630 - Cadiz
http://www.arcoscom.com
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msn: samueldg@xxxxxxxxxxxx
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