Re: RAID1 problem - server freezes on md data-check

[George Chelidze <wrath@geo.net.ge>]

> > After more investigation I found that second drive was unable to
> > negotiate 3.0Gb/s speed and dropped to 1.5Gb/s. 
> > 
> > [    3.433967] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
> > ...
> > [    4.518560] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
> > 
> > 
> > That's another issue which triggered a question:
> > 
> > Will it make RAID more stable if I force both drives to be 1.5Gb/s? For
> > seagate drives it can be done by setting a jumper, no idea how it's
> > possible on WD.
> 
> If that is about the same model of disk, connected to the same SATA host,
> you do realise something is broken, don't you?

$ lsscsi
[0:0:0:0]    disk    ATA      GB0250EAFYK      HPG1  /dev/sda
[0:0:1:0]    disk    ATA      GB0250EAFYK      HPG1  /dev/sdb
[2:0:0:0]    cd/dvd  HL-DT-ST DVD-RAM GH40L    LA00  /dev/sr0

And yes, I realize that something is "broken", whether it's hardware or
some misconfiguration of anything, but I am not good enough in all these
SATA things. What kind of tests are appropriate for this situation? Do
you think it's more HDD related problem, or maybe SATA host, or
something else?

Thanks in advance,

George