Devices and storage

HAL DAEMON - UDEV

• periferiche udev connesse

ls -lR /dev/disk

• molte informazioni su sdb

udevinfo -a -p /sys/block/sdb/

Ottenere informazione sul disco

elwood xunil # hdparm -I /dev/hda

/dev/hda:

ATA device, with non-removable media

       Model Number:       WDC WD2500JB-00FUA0
       Serial Number:      WD-WCAEP1091941
       Firmware Revision:  15.05R15

Standards:

       Supported: 6 5 4
       Likely used: 6

Configuration:

       Logical         max     current
       cylinders       16383   65535
       heads           16      1
       sectors/track   63      63
       --
       CHS current addressable sectors:    4128705
       LBA    user addressable sectors:  268435455
       LBA48  user addressable sectors:  488397168
       device size with M = 1024*1024:      238475 MBytes
       device size with M = 1000*1000:      250059 MBytes (250 GB)

Capabilities:

       LBA, IORDY(can be disabled)
       Standby timer values: spec'd by Standard, with device specific minimum
       R/W multiple sector transfer: Max = 16  Current = 16
       Recommended acoustic management value: 128, current value: 128
       DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
            Cycle time: min=120ns recommended=120ns
       PIO: pio0 pio1 pio2 pio3 pio4
            Cycle time: no flow control=120ns  IORDY flow control=120ns

Commands/features:

       Enabled Supported:
          *    SMART feature set
               Security Mode feature set
          *    Power Management feature set
          *    Write cache
          *    Look-ahead
          *    Host Protected Area feature set
          *    WRITE_BUFFER command
          *    READ_BUFFER command
          *    DOWNLOAD_MICROCODE
               SET_MAX security extension
          *    Automatic Acoustic Management feature set
          *    48-bit Address feature set
          *    Device Configuration Overlay feature set
          *    Mandatory FLUSH_CACHE
          *    FLUSH_CACHE_EXT
          *    SMART error logging
          *    SMART self-test

Security:

               supported
       not     enabled
       not     locked
       not     frozen
       not     expired: security count
       not     supported: enhanced erase

HW reset results:

       CBLID- above Vih
       Device num = 0 determined by the jumper

Checksum: correct