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

From: Pavel Machek
Date: Wed Aug 02 2006 - 06:34:18 EST


> I tried to spin down my harddisk using hdparm, but when it is
> supposed to spin up again, then it is blocked for quite some
> time. dmesg says:
> 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.

How do you manage to spindown SATA disks? I tried hdparm -y, but that
did not work iirc.

Thanks for all the (sleeping) penguins.
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