Kulonos (Linux)kernel hiba. Vagy nem?

Ez itt a hiba.

ata3.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x2 frozen
ata3.00: tag 0 cmd 0x61 Emask 0x4 stat 0x40 err 0x0 (timeout)
ata3: soft resetting port
ata3: softreset failed (1st FIS failed)
ata3: softreset failed, retrying in 5 secs
ata3: hard resetting port
ata3: port is slow to respond, please be patient
ata3: port failed to respond (30 secs)
ata3: COMRESET failed (device not ready)
ata3: hardreset failed, retrying in 5 secs
ata3: hard resetting port
ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata3.00: configured for UDMA/25
ata3: EH complete

Erdekes modon akarmelyik bayben van a 2 lemez (4 bay van, 4 alaplapi SATA porthoz), a hiba marad.
Az is feltunt, hogy a tukor irasi sebessege 30-50MB/s kozott lengedezik.

Probalt javitasi eljarasok:

http://www.mail-archive.com/linux-ide@vger.kernel.org/msg02501.html
block/sd?/device/queue_depth = 1
block/sd?/queue/nr_requests = 4
http://people.debian.org/~nobse/kernel/linux-2.6/i386/linux-source-2.6… --> Bug#391867: "port is slow to respond" on computer with SATA disk
2.6.20-rc4 upgrade.

Ezek nem segitettek. Viszont az utolsotol mas lett a hibauzenet formazasa.

erdekes modon a regi 2.6.17.6 buildemre downgrade segitett. Sajnos azzal mas bajom van :)

Igy aztan kimeritve a software lehetosegeket atneztem a gep belsejet is.
Felfedeztem, hogy a 16db SATA kabel ossze van kotegelve es tobben is teljesen visszahajlanak, nemelyik tobbszor is.

Ugy emlekeztem, hogy nincs arnyekolva es valami eszement orajelen jar a SATA interface.
Valoban, talaltam szep kis cikket amiben leirjak, hogy 1.5GHz-en megy.

Alant idezet az irasbol:

If you are setting up a system using SATA here are some things you must be aware of:

* DO NOT operate SATA devices outside of a sealed system unit. DO NOT operate SATA devices from a power supply that is not the system
unit's power supply.
* DO NOT tie wrap SATA cables together. DO NOT put sharp bends in SATA cables. DO NOT route SATA cables near PATA cables. Avoid placing SATA devices close to each other such that the SATA cable connectors are close to each other.
* DO NOT operate a radio transmitter (such as a cell phone) near an exposed SATA cable or device.

Why all these warnings? The basic problem is that the SATA cable connector is not shielded. This has to be the number one most stupid thing that has been done in the SATA world. ()

Azota szetbontottam a kotegeles jokora reszet. Erdekes modon a hibak szama a toredekere csokkent.
A teljes szetkotegeleshez meg jobban szet kell bontanom a szervert. De ez is eljon meg a heten...

Sata okossag linkek:
http://www.ata-atapi.com/sata.htm
http://www.interfacebus.com/Design_Connector_Serial_ATA.html

A tortenet pikanteriaja, hogy a gepet windowsrol koltoztettem Linuxra. Windows alatt mukodott, csak nagyon lassu volt. Nana, mert tele volt a storage kabelezese interferenciaval. Linux kecsesen befosott tole :-D

A kabelkoteg reszleges szetbontasa utan a sebesseg 50-60MB/s lett.