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Modifica device da sda ad hda e DMA

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geps2
Apprentice

Joined: 12 Jul 2006
Posts: 267

Posted: Wed Apr 15, 2009 5:07 pm Post subject: Modifica device da sda ad hda e DMA

Salve.
Sul mio glorioso server avevo 4 dischi SATA, messi in RAID1 software due a due, più o meno così:

Code:

/dev/sda1 |____/dev/md0
/dev/sdb1 |

/dev/sdc1 |____/dev/md1
/dev/sdd1 |

per vari motivi ho dovuto togliere gli ultimi due, e ora ho questa situazione:

Code:

/dev/hda1 |____/dev/md0
/dev/hdb1 |

Perché mi è cambiata la mappa dei device?
Per funzionare funziona tutto... ho solo dovuto ritoccare alcuni file di config (/etc/fstab etc...), ma prima riuscivo a impostare il DMA sui dischi, e adesso no!

Code:

~ # hdparm -d1 /dev/hda

/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)

Perché?
Grazie per l'attenzione, ciao!
GePs

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