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SubjectRe: ataraid and mount -l causes IDE errors

That is the generic BUG in the legacy data path in ide-disk.c.
It is the reason I have been working to migrate to taskfile io but until
there are updates forward from AC to Marcelo, I do not see it being fixed.

It is hard to hit but messy when you get there.

Also it may have something to do w/ changes to the chipset driver made by
Promise and not me.

Sorry,

Andre Hedrick
LAD Storage Consulting Group

On Mon, 26 Aug 2002, Hans Verkuil wrote:

> I've recently updated the util-linux package from version 2.11r to 2.11u and
> discovered that running 'mount -l' results in a large number of IDE errors
> and that afterwards the harddisk DMA was turned off (running a vanilla 2.4.19
> kernel).
>
> After some research I discovered that in 2.11s a test was added to check for
> raid disks. Checking for a disk label should only be done on the full raid,
> not on the disks that form the raid array. However, this test causes a lot of
> problems when run on my striped promise fasttrak 100 array.
>
> I've created a simple test program to illustrate the problem:
>
> >>>>>>> cut
> #include <stdio.h>
> #include <fcntl.h>
> #include <unistd.h>
> #include <errno.h>
>
> int main(int argc, char **argv)
> {
> int fd, rv;
> char buf[4096];
>
> fd = open(argv[1], O_RDONLY);
> if (fd < 0) {
> printf("fail\n");
> return 1;
> }
> errno = 0;
> rv = lseek(fd, -4096, SEEK_END);
> printf("lseek: %d %s\n", rv, strerror(errno));
> errno = 0;
> rv = read(fd, buf, 4096);
> printf("read: %d %s\n", rv, strerror(errno));
> close(fd);
> return 0;
> }
> >>>>>>> cut
>
> When run with '/dev/ide/host2/bus0/target0/lun0/part4' (this is the last
> partition of my striped raid array /dev/ataraid/disc0/disc consisting of
> disks /dev/ide/host2/bus0/target0/lun0/disc and
> /dev/ide/host2/bus0/target1/lun0/disc) the following kernel messages appear:
>
> >>>>>>> start messages
> hde: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> hde: dma_intr: error=0x04 { DriveStatusError }
> hde: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> hde: dma_intr: error=0x04 { DriveStatusError }
> hde: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> hde: dma_intr: error=0x04 { DriveStatusError }
> hde: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> hde: dma_intr: error=0x04 { DriveStatusError }
> hde: DMA disabled
> hdf: DMA disabled
> PDC202XX: Primary channel reset.
> ide2: reset: success
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> PDC202XX: Primary channel reset.
> ide2: reset: success
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> end_request: I/O error, dev 21:04 (hde), sector 188410312
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> PDC202XX: Primary channel reset.
> ide2: reset: success
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> PDC202XX: Primary channel reset.
> ide2: reset: success
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> end_request: I/O error, dev 21:04 (hde), sector 188410314
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> PDC202XX: Primary channel reset.
> ide2: reset: success
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> PDC202XX: Primary channel reset.
> ide2: reset: success
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> end_request: I/O error, dev 21:04 (hde), sector 188410316
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> PDC202XX: Primary channel reset.
> ide2: reset: success
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> PDC202XX: Primary channel reset.
> ide2: reset: success
> hde: read_intr: status=0x59 { DriveReady SeekComplete DataRequest Error }
> hde: read_intr: error=0x04 { DriveStatusError }
> end_request: I/O error, dev 21:04 (hde), sector 188410318
> >>>>>>>>>> end messages
>
> I suspect some sanity check is missing in the Promise driver or elsewhere.
> These messages appear while trying to read the last 4096 bytes of a partition
> that extends way beyond the physical size of the disc as the partition is
> actually the partition of the whole raid array.
>
> Is this a known problem? Does anyone have a fix?
>
> Regards,
>
> Hans Verkuil
>
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