This seems like a bug in the ide driver not issuing a reset?
On RH7.3 (2.4.18-3) if I do:
$ hdparm -Y /dev/hda
$ do stuff and disk spins up
$ hdparm -Y /dev/hda
$ everything hangs waiting for disk
cheers,
Pádraig.
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller on PCI bus 00 dev f9
PIIX4: chipset revision 2
PIIX4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio
hda: Maxtor 4D040H2, ATA DISK drive
hdc: SAMSUNG CD-ROM SC-148C, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
blk: queue c035e6a4, I/O limit 4095Mb (mask 0xffffffff)
hda: 78125000 sectors (40000 MB) w/2048KiB Cache, CHS=4863/255/63, UDMA(66)
ide-floppy driver 0.99.newide
Partition check:
hda: hda1 hda2 hda3 hda4 < hda5 hda6 >
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This archive was generated by hypermail 2b29 : Mon Sep 23 2002 - 22:00:30 EST