[ltp] Re: enabling protect file for hdaps on t61

[Rolf Kutz]

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On 10/02/08 00:18 +0100, Elias Oltmanns wrote:
>
>Is this with libata (and ata_piix in particular)? Try the following
>experiment:

This is an SATA hdd, maybe that's the difference.
ata_piix is just for the DVD.:
# lsmod|grep ata
ata_piix               23236  0
libata                174960  2 ahci,ata_piix
scsi_mod              179192  4 sd_mod,sg,sr_mod,libata

>Switch to single user mode and remount the partitions read only. Perform
>the following commands:
>
># cat some-big-file > /dev/null &
># echo 1 > /sys/block/sda/queue/protect
>=20
>Repeat the second one several times while the read operation of the
>first one is in progress. Make sure that you actually hear the drive
>park heads and resume normal operation. My system freezes after the
>third park command at the latest.

Done that and it didn't freeze the system even
after ten times. That doesn't mean that there
isn't a bug. It just doesn't trigger on this
system.

regards, Rolf

--=20
I si para prop 10

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