Re: 2.6.18-rc2, problem to wake up spinned down drive?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi!

> >ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 
> >0x2 frozen
> >ata1.00: (BMDMA stat 0x20)
> >ata1.00: tag 0 cmd 0xca Emask 0x4 stat 0x40 err 0x0 
> >(timeout)
> >ata1: port is slow to respond, please be patient
> >ata1: port failed to respond (30 secs)
> >ata1: soft resetting port
> >ata1.00: configured for UDMA/133
> >ata1: EH complete
> >SCSI device sda: 312581808 512-byte hdwr sectors 
> >(160042 MB)
> >sda: Write Protect is off
> >sda: Mode Sense: 00 3a 00 00
> >SCSI device sda: drive cache: write back
> >
> >The disk is a SAMSUNG SP1614C.
> >
> >On another machine (with a SAMSUNG SP2504C inside) 
> >there is no
> >such problem: The disk is back after just a few seconds.
> 
> In standby mode, the drive's interface and state 
> machines stay online and are supposed to spin up and 
> process the command when it receives one.  The above 
> message is printed because an IO command hasn't finished 
> in 30 secs meaning that it didn't wake up when it should 
> have.  The drive seems to act incorrectly.
> 
> >Is there some trick to wake up the disk a little bit 
> >faster?
> 
> Can you try the following instead of hdparm?
> 
> echo 1 > /sys/bus/scsi/devices/1:0:0:0/power/state

Really? I thought power/state takes 0/3 (for D0 and D3)

							Pavel
-- 
Thanks for all the (sleeping) penguins.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux