Оживший юзерпик (tobotras) wrote,
Оживший юзерпик
tobotras

Винчестерное

Вот интересно, как это? В одном и том же контроллере торчат два диска, почти одинаковых:


[    4.456002] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    4.468001] ata1.00: ATA-8: WDC WD10EARS-00Y5B1, 80.00A80, max UDMA/133
[    4.468001] ata1.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 31/32)
[    4.472001] ata1.00: configured for UDMA/133
[    4.996018] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
[    5.000016] ata2.00: ATA-8: SAMSUNG HD105SI, 1AJ10001, max UDMA/133
[    5.000016] ata2.00: 1953525168 sectors, multi 0: LBA48 NCQ (depth 31/32)
[    5.004016] ata2.00: configured for UDMA/133
[    6.104151] scsi 0:0:0:0: Direct-Access     ATA      WDC WD10EARS-00Y 80.0 PQ: 0 ANSI: 5
[    6.104309] scsi 1:0:0:0: Direct-Access     ATA      SAMSUNG HD105SI  1AJ1 PQ: 0 ANSI: 5
[    6.757972] sd 0:0:0:0: [sda] 1953525168 512-byte hardware sectors (1000205 MB)
[    6.757989] sd 0:0:0:0: [sda] Write Protect is off
[    6.757993] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    6.758016] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    6.758075] sd 0:0:0:0: [sda] 1953525168 512-byte hardware sectors (1000205 MB)
[    6.758088] sd 0:0:0:0: [sda] Write Protect is off
[    6.758092] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    6.758114] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    6.758119]  sda: sda1
[    6.763236] sd 0:0:0:0: [sda] Attached SCSI disk
[    6.763325] sd 1:0:0:0: [sdb] 1953525168 512-byte hardware sectors (1000205 MB)
[    6.763341] sd 1:0:0:0: [sdb] Write Protect is off
[    6.763345] sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[    6.763368] sd 1:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    6.763420] sd 1:0:0:0: [sdb] 1953525168 512-byte hardware sectors (1000205 MB)
[    6.763434] sd 1:0:0:0: [sdb] Write Protect is off
[    6.763438] sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
[    6.763460] sd 1:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    6.763464]  sdb: sdb1
[    6.769963] sd 1:0:0:0: [sdb] Attached SCSI disk

hp:~# hdparm -i /dev/sda
/dev/sda:

 Model=WDC WD10EARS-00Y5B1                     , FwRev=80.00A80, SerialNo=     WD-WCAV5P352039
 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
 BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=?0?
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio3 pio4 
 DMA modes:  mdma0 mdma1 mdma2 
 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 
 AdvancedPM=no WriteCache=disabled
 Drive conforms to: Unspecified:  ATA/ATAPI-1,2,3,4,5,6,7

 * signifies the current active mode
hp:~# hdparm -i /dev/sdb

/dev/sdb:

 Model=SAMSUNG HD105SI                         , FwRev=1AJ10001, SerialNo=S25GJ9BB203191      
 Config={ Fixed }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
 BuffType=unknown, BuffSize=32767kB, MaxMultSect=16, MultSect=?0?
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4 
 DMA modes:  mdma0 mdma1 mdma2 
 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 
 AdvancedPM=yes: disabled (255) WriteCache=disabled
 Drive conforms to: unknown:  ATA/ATAPI-0,1,2,3,4,5,6,7

 * signifies the current active mode



И при этом:
hp:~# hdparm -t /dev/sda

/dev/sda:
 Timing buffered disk reads:  312 MB in  3.00 seconds = 103.99 MB/sec
hp:~# hdparm -t /dev/sdb

/dev/sdb:
 Timing buffered disk reads:   34 MB in  3.10 seconds =  10.98 MB/sec
Tags: hardware, linux
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