On Thu, Dec 11, 2008 at 10:40:50PM +0100, Emanoil Kotsev wrote: > > do you have custom kernel or debian stock kernel.
Until today, I was using a standard kernel from kernel.org. Today I downloaded the package with the Debian kernel sources (2.6.24, blah etchnhalf or something like that ...), configured it and made a kernel package with "make-kpkg kernel_image -us -uc", installed the package I made, and now I'm using that kernel. I'm not sure if I could use a pre-built Debian kernel: the installer couldn't access the SATA disks because it didn't have the module for the controller, and a pre-built standard Debian kernel might not have that, either. > What is standard? Please, look that you _don't_ use the ide_generic > or ata_generic drivers. so kernel config and lsmod check is worth I > think. This we have discussed in other postings. if compiling your > own kernel this could be the issue. I would also see what hdparm > -tT says I'll attach the .config to this mail. The ide_generic and ata_generic drivers do not work for this board. For the IDE disk, I'm using CONFIG_BLK_DEV_JMICRON: JMicron JMB36x support. The help for that says "Basic support for the JMicron ATA controllers. For full support use the libata drivers." But libata is deprecated? And I think I tried that, and it didn't work. For sata, it's CONFIG_SATA_AHCI ... Hm, I don't know about CONFIG_ATA_PIIX: "This option enables support for ICH5/6/7/8 Serial ATA and support for PATA on the Intel ESB/ICH/PIIX3/PIIX4 series host controllers." lspci says ICH9: "SATA controller: Intel Corporation 82801IB (ICH9) 4 port SATA AHCI Controller (rev 02)". Should I try CONFIG_ATA_PIIX instead (dunno if it works)? # hdparm -tT /dev/sdb /dev/sdb: Timing cached reads: 14464 MB in 2.00 seconds = 7241.58 MB/sec Timing buffered disk reads: 202 MB in 3.02 seconds = 66.83 MB/sec hdpparm -tT /dev/sda /dev/sda: Timing cached reads: 14308 MB in 2.00 seconds = 7164.25 MB/sec Timing buffered disk reads: 208 MB in 3.02 seconds = 68.83 MB/sec That's about the same as what I see in /proc/mdstat during a rebuild: about 70MB/sec for the partitions at the beginning of the disk, about 65MB/sec for the middle and 40MB/sec for the partition at the end. These disks are pretty slow. A much older, single SCSI disk is faster to read than the SATA RAID-1, maybe not in benchmark numbers but in how long it takes to load something. > I've been trying raid over usb for the last couple of months and had similar > problems with sata drives and no such problems with ide in usb boxes. > Finally no one could explain the reason for the raid loosing the drive and > I attached them directly to SATA bus. So far it's working. > > Hope this information helps Hmm ... What error messages did you get? When the disks were connected via USB, wouldn't you get different messages not related to SATA? -- "Don't let them, daddy. Don't let the stars run down." http://adin.dyndns.org/adin/TheLastQ.htm -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
