Re: 2TB+ on ahd broken? (6.2-R)

John-Mark Gurney wrote this message on Fri, Aug 17, 2007 at 15:46 -0700:
I was just attempting to add a RAID shelf to a system w/ an Adaptec
29320 card, and when I export a 7TB disk to the card, and kept getting
timeout related issues. The dump is very similar to PR 76178 which
appears to be reporting the same issue...

I have attached a dmesg w/ the failure... I tried various sizes and
1000000MB, 500MB and 2000000MB disks work... When I tried the full
7TB or 2.3TB disk, ahd failed w/ the messages at the end of the
dmesg.

Is anyone even working on this? As 2TB disks are coming soon, I'd
imagine that ahd will need to get fixed before long, or are there just
not many people use large disks w/ ahd?

For the archives:

After additional testing.. It appears that there was issues at U320
speeds even w/ the 500MB disk... Slowing down to U160 made the 500MB
disk work, but the >2TB disk wouldn't be recognized... I have also
tried a different cable, and w/ the different cable, the >2TB disk
shows up at U320 speeds, but sees broken behavior, the same as a
small disk... The broken behavior at U320 being transfer rates in the
100-200KB/sec as ahd constantly resets...

If ahd isn't getting fixed, can someone recommend a low profile PCI-X
Ultra320 card?

I found a LSI (mpt) based card, and it's working great...

--
John-Mark Gurney Voice: +1 415 225 5579

"All that I will do, has been done, All that I have, has not."
_______________________________________________
freebsd-stable@xxxxxxxxxxx mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-stable
To unsubscribe, send any mail to "freebsd-stable-unsubscribe@xxxxxxxxxxx"

Relevant Pages

  • Proposed Assembler Commands
    ... ACM Automatically Clear Memory ... BKCRDR Backspace Card Reader ... BKSPD Backspace Disk ... EIAO Execute In Any Order ...
    (sci.electronics.design)
  • [SUMMARY] Qlogic fibre-channel failover problem
    ... the FC card then seemed to work ... I have formatted/newfs'd the disk, ... Jun 20 17:02:23 lib-srvr7 offline or reservation conflict ...
    (SunManagers)
  • athlon-xp + fakeraid regression
    ... The build completes fine, the kernel boots fine, the machine will seem to be fine as long as it remains quiescent. ... At the beginning, just after hitting enter on the make command, one of the ad4 disk light goes on solid for several seconds. ... There is a well known thing where these cheap pata fakeraid cards will try to do ata133 if the drive says it can, when really, even if he drives are new ata133 drives and the cables are new and short and shielded, you still shouldn't try to do ata133 since the spec is too tight and you'll just get bit errors or other failures. ... The fix is use ata100 somehow, either by disabling dma entirely in loader.conf (since you have no more selective option there, and the raid card bios never has an option for controlling pio/dma mode like motherboard bios's have) and then use atacontrol in rc.early to set udma5, or by using disks that can only do ata100 and only advertise ata100 to the controller. ...
    (freebsd-current)
  • Re: [semi-OT] USB floppy?
    ... I've not had any trouble myself, but I've only used four card readers ... storage model now, supported by everyone and their electronic dog. ... then schedule all your backups to it; ... backups of the whole thing to a plain disk or three somewhere else, ...
    (uk.comp.sys.mac)
  • 2TB+ on ahd broken? (6.2-R)
    ... 29320 card, and when I export a 7TB disk to the card, and kept getting ... 7TB or 2.3TB disk, ahd failed w/ the messages at the end of the ... <ACPI PCI bus> on pcib0 ... 2 ports with 2 removable, ...
    (freebsd-current)