Hi everyone,
I'm having trouble to determine the cause of the following behavior. I'm not
even sure that I'm supposed to hot plug and unplug a SATA drive from a nForce3
Ultra (apparently CK8S, on a Gigabyte K8NS Ultra 939 mobo) SATA interface, to
begin with. The information is hard to find given that the sata_nv driver
supports a range of different hardware.
I've recently acquired an external drive with (among others) an eSATA
interface, so I also bought a eSATA->SATA bracket and intend to use that drive
(Lacie d2 quadra 500G) through eSATA.
The thing is that if I boot the machine with the drive plugged and turned on,
it is properly detected and usable. If, at some point, I want to remove the
drive, I unmount any partitions on it and issue the proper scsiadd -r command
(usually scsiadd -r 1 0 0 0, since this is the second SATA drive) and
everything is fine (I turn the drive off and unplug it), so far. Next, when
I want to use the drive again, it's still detected alright (although appears
as sdc and not sdb anymore), but the SCSI layer issues "scsi 1:0:0:0:
rejecting I/O to dead device" from time to time. Then any scsiadd -r 1 0 0 0
command fails with "No such device or address", although it appears in the
output of scsiadd -p or even scsiadd -s (always as 1 0 0 0). If I ignore that
detail and switch the drive off, then the kernel eventually notices that the
drive is gone and the SCSI layer attempts to stop the device and fails ([sdc]
START_STOP FAILED). From that moment on, any attempt to plug the drive again
fails. The kernel issues "ata2: hard resetting port" and "ata2: port is slow
to respond, please be patient (Status 0x80)" periodically, until I switch the
drive off.
If the drive is not present at boot, then hot plugging it fails. The kernel
first soft resets the port, then issues the "please be patient (Status 0x80)"
message, complains that SRST failed (errno=-16) and goes on hard resetting the
port, issuing "please be patient (Status 0x80)" and complaining that COMRESET
failed (errno=-16), periodically, until the drive is switched off.
If somebody could tell me whether hot-plugging is supposed to work with my
SATA interface, it would be nice. =) The motherboard happens to offer another
SATA interface (Sil3512A) which is well supported and appears to support
hot-plugging as well, but it conflicts nastily with my PCTV Pro (bttv) card
(which are apparently known to conflict with the Sil SATA interfaces).
Thanks for any help.
Ignacy
--
I used to have a sig, but I've stopped smoking now.
Ignacy Gawedzki wrote:
> Hi everyone,
>
> I'm having trouble to determine the cause of the following behavior. I'm not
> even sure that I'm supposed to hot plug and unplug a SATA drive from a nForce3
> Ultra (apparently CK8S, on a Gigabyte K8NS Ultra 939 mobo) SATA interface, to
> begin with. The information is hard to find given that the sata_nv driver
> supports a range of different hardware.
>
> I've recently acquired an external drive with (among others) an eSATA
> interface, so I also bought a eSATA->SATA bracket and intend to use that drive
> (Lacie d2 quadra 500G) through eSATA.
BTW, eSATA cannot technically be converted properly to SATA with a
simple connector adapter. eSATA is supposed to use higher signalling
voltages and so using such an adapter is not guaranteed to work.
>
> The thing is that if I boot the machine with the drive plugged and turned on,
> it is properly detected and usable. If, at some point, I want to remove the
> drive, I unmount any partitions on it and issue the proper scsiadd -r command
> (usually scsiadd -r 1 0 0 0, since this is the second SATA drive) and
> everything is fine (I turn the drive off and unplug it), so far. Next, when
> I want to use the drive again, it's still detected alright (although appears
> as sdc and not sdb anymore), but the SCSI layer issues "scsi 1:0:0:0:
> rejecting I/O to dead device" from time to time. Then any scsiadd -r 1 0 0 0
> command fails with "No such device or address", although it appears in the
> output of scsiadd -p or even scsiadd -s (always as 1 0 0 0). If I ignore that
> detail and switch the drive off, then the kernel eventually notices that the
> drive is gone and the SCSI layer attempts to stop the device and fails ([sdc]
> START_STOP FAILED). From that moment on, any attempt to plug the drive again
> fails. The kernel issues "ata2: hard resetting port" and "ata2: port is slow
> to respond, please be patient (Status 0x80)" periodically, until I switch the
> drive off.
>
> If the drive is not present at boot, then hot plugging it fails. The kernel
> first soft resets the port, then issues the "please be patient (Status 0x80)"
> message, complains that SRST failed (errno=-16) and goes on hard resetting the
> port, issuing "please be patient (Status 0x80)" and complaining that COMRESET
> failed (errno=-16), periodically, until the drive is switched off.
Full dmesg output would be useful..
>
> If somebody could tell me whether hot-plugging is supposed to work with my
> SATA interface, it would be nice. =) The motherboard happens to offer another
> SATA interface (Sil3512A) which is well supported and appears to support
> hot-plugging as well, but it conflicts nastily with my PCTV Pro (bttv) card
> (which are apparently known to conflict with the Sil SATA interfaces).
>
> Thanks for any help.
>
> Ignacy
>
On Fri, Jan 25, 2008 at 09:03:02PM -0600, thus spake Robert Hancock:
> Ignacy Gawedzki wrote:
>> Hi everyone,
>> I'm having trouble to determine the cause of the following behavior. I'm
>> not
>> even sure that I'm supposed to hot plug and unplug a SATA drive from a
>> nForce3
>> Ultra (apparently CK8S, on a Gigabyte K8NS Ultra 939 mobo) SATA interface,
>> to
>> begin with. The information is hard to find given that the sata_nv driver
>> supports a range of different hardware.
>> I've recently acquired an external drive with (among others) an eSATA
>> interface, so I also bought a eSATA->SATA bracket and intend to use that
>> drive
>> (Lacie d2 quadra 500G) through eSATA.
>
> BTW, eSATA cannot technically be converted properly to SATA with a simple
> connector adapter. eSATA is supposed to use higher signalling voltages and
> so using such an adapter is not guaranteed to work.
Yeah, apparently this shortens the max cable length to 1 meter. In this case
I've got a 1 meter external cable and approx. 30 cm internal (heavily shielded
though) cable from the bracket to the SATA port. Anyway, the drive works
perfectly if plugged at boot time.
>
>> The thing is that if I boot the machine with the drive plugged and turned
>> on,
>> it is properly detected and usable. If, at some point, I want to remove
>> the
>> drive, I unmount any partitions on it and issue the proper scsiadd -r
>> command
>> (usually scsiadd -r 1 0 0 0, since this is the second SATA drive) and
>> everything is fine (I turn the drive off and unplug it), so far. Next,
>> when
>> I want to use the drive again, it's still detected alright (although
>> appears
>> as sdc and not sdb anymore), but the SCSI layer issues "scsi 1:0:0:0:
>> rejecting I/O to dead device" from time to time. Then any scsiadd -r 1 0
>> 0 0
>> command fails with "No such device or address", although it appears in the
>> output of scsiadd -p or even scsiadd -s (always as 1 0 0 0). If I ignore
>> that
>> detail and switch the drive off, then the kernel eventually notices that
>> the
>> drive is gone and the SCSI layer attempts to stop the device and fails
>> ([sdc]
>> START_STOP FAILED). From that moment on, any attempt to plug the drive
>> again
>> fails. The kernel issues "ata2: hard resetting port" and "ata2: port is
>> slow
>> to respond, please be patient (Status 0x80)" periodically, until I switch
>> the
>> drive off.
>> If the drive is not present at boot, then hot plugging it fails. The
>> kernel
>> first soft resets the port, then issues the "please be patient (Status
>> 0x80)"
>> message, complains that SRST failed (errno=-16) and goes on hard resetting
>> the
>> port, issuing "please be patient (Status 0x80)" and complaining that
>> COMRESET
>> failed (errno=-16), periodically, until the drive is switched off.
>
> Full dmesg output would be useful..
I repeated the experiments and dumped as much dmesg as I could.
The dmesg outputs of both experiments are attached and commented. It seems
that in the case the drive is pluggin at boot time, it remains hot pluggable
later (be it with some strange error messages) after all (or is there another
factor that I did not reproduce?).
Thank you for any help. =)
--
NO CARRIER
(linux-ide cc'ed)
Ignacy Gawedzki wrote:
> On Fri, Jan 25, 2008 at 09:03:02PM -0600, thus spake Robert Hancock:
>> Ignacy Gawedzki wrote:
>>> Hi everyone,
>>> I'm having trouble to determine the cause of the following behavior. I'm
>>> not
>>> even sure that I'm supposed to hot plug and unplug a SATA drive from a
>>> nForce3
>>> Ultra (apparently CK8S, on a Gigabyte K8NS Ultra 939 mobo) SATA interface,
>>> to
>>> begin with. The information is hard to find given that the sata_nv driver
>>> supports a range of different hardware.
>>> I've recently acquired an external drive with (among others) an eSATA
>>> interface, so I also bought a eSATA->SATA bracket and intend to use that
>>> drive
>>> (Lacie d2 quadra 500G) through eSATA.
>> BTW, eSATA cannot technically be converted properly to SATA with a simple
>> connector adapter. eSATA is supposed to use higher signalling voltages and
>> so using such an adapter is not guaranteed to work.
>
> Yeah, apparently this shortens the max cable length to 1 meter. In this case
> I've got a 1 meter external cable and approx. 30 cm internal (heavily shielded
> though) cable from the bracket to the SATA port. Anyway, the drive works
> perfectly if plugged at boot time.
>
>>> The thing is that if I boot the machine with the drive plugged and turned
>>> on,
>>> it is properly detected and usable. If, at some point, I want to remove
>>> the
>>> drive, I unmount any partitions on it and issue the proper scsiadd -r
>>> command
>>> (usually scsiadd -r 1 0 0 0, since this is the second SATA drive) and
>>> everything is fine (I turn the drive off and unplug it), so far. Next,
>>> when
>>> I want to use the drive again, it's still detected alright (although
>>> appears
>>> as sdc and not sdb anymore), but the SCSI layer issues "scsi 1:0:0:0:
>>> rejecting I/O to dead device" from time to time. Then any scsiadd -r 1 0
>>> 0 0
>>> command fails with "No such device or address", although it appears in the
>>> output of scsiadd -p or even scsiadd -s (always as 1 0 0 0). If I ignore
>>> that
>>> detail and switch the drive off, then the kernel eventually notices that
>>> the
>>> drive is gone and the SCSI layer attempts to stop the device and fails
>>> ([sdc]
>>> START_STOP FAILED). From that moment on, any attempt to plug the drive
>>> again
>>> fails. The kernel issues "ata2: hard resetting port" and "ata2: port is
>>> slow
>>> to respond, please be patient (Status 0x80)" periodically, until I switch
>>> the
>>> drive off.
>>> If the drive is not present at boot, then hot plugging it fails. The
>>> kernel
>>> first soft resets the port, then issues the "please be patient (Status
>>> 0x80)"
>>> message, complains that SRST failed (errno=-16) and goes on hard resetting
>>> the
>>> port, issuing "please be patient (Status 0x80)" and complaining that
>>> COMRESET
>>> failed (errno=-16), periodically, until the drive is switched off.
>> Full dmesg output would be useful..
>
> I repeated the experiments and dumped as much dmesg as I could.
>
> The dmesg outputs of both experiments are attached and commented. It seems
> that in the case the drive is pluggin at boot time, it remains hot pluggable
> later (be it with some strange error messages) after all (or is there another
> factor that I did not reproduce?).
>
> Thank you for any help. =)
>
>
So it seems that unplug/plug works fine if the drive was plugged in at
boot, but if it wasn't plugged in on boot it doesn't work when plugged
in afterwards. That suggests maybe there is some initialization that the
BIOS is doing when the drive is plugged in on boot which we're not doing
when one's plugged in afterwards. Unfortunately the lack of public
documentation on the NVIDIA SATA hardware makes it difficult to tell
whether this is the case..
Any ideas guys? When the drive is plugged in, a stream of this shows up.
It would seem like the controller is throwing hotplug interrupts but we
never seem to get a "SATA link up". This is on nForce3, btw.
ata2: exception Emask 0x10 SAct 0x0 SErr 0x50000 action 0x2 frozen
ata2: hard resetting port
ata2: SATA link down (SStatus 0 SControl 300)
ata2: EH complete
ata2: exception Emask 0x10 SAct 0x0 SErr 0x1d0000 action 0x2 frozen
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: SRST failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: limiting SATA link speed to 1.5 Gbps
ata2: hard resetting port
ata2: COMRESET failed (errno=-16)
ata2: reset failed, giving up
ata2: EH pending after completion, repeating EH (cnt=4)
ata2: exception Emask 0x10 SAct 0x0 SErr 0x19d0000 action 0x2 frozen
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: limiting SATA link speed to 1.5 Gbps
ata2: hard resetting port
ata2: COMRESET failed (errno=-16)
ata2: reset failed, giving up
ata2: EH pending after completion, repeating EH (cnt=3)
ata2: exception Emask 0x10 SAct 0x0 SErr 0x19d0000 action 0x2 frozen
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
ata2: limiting SATA link speed to 1.5 Gbps
ata2: hard resetting port
ata2: COMRESET failed (errno=-16)
ata2: reset failed, giving up
ata2: EH pending after completion, repeating EH (cnt=2)
ata2: exception Emask 0x10 SAct 0x0 SErr 0x19d0000 action 0x2 frozen
ata2: hard resetting port
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: COMRESET failed (errno=-16)
etc.
On Mon, Jan 28, 2008 at 05:35:58PM -0600, thus spake Robert Hancock:
> Any ideas guys? When the drive is plugged in, a stream of this shows up. It
> would seem like the controller is throwing hotplug interrupts but we never
> seem to get a "SATA link up". This is on nForce3, btw.
I just happened to upgrade to kernel 2.6.24 and the problem is gone. I just
have a few SError messages that appear to be harmless:
ata2: exception Emask 0x10 SAct 0x0 SErr 0x50000 action 0xa frozen
ata2: SError: { PHYRdyChg CommWake }
ata2: hard resetting link
ata2: SATA link down (SStatus 0 SControl 300)
ata2: EH complete
ata2: exception Emask 0x10 SAct 0x0 SErr 0x1d0000 action 0xa frozen
ata2: SError: { PHYRdyChg CommWake 10B8B Dispar }
ata2: hard resetting link
ata2: port is slow to respond, please be patient (Status 0x80)
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata2.00: ATA-8: ST3500320AS, SD15, max UDMA/133
ata2.00: 976773168 sectors, multi 0: LBA48 NCQ (depth 0/32)
ata2.00: configured for UDMA/133
ata2: EH complete
and then the usual SCSI messages about the newly seen drive. The scsiadd -r
command works every time and does stop the disk indeed :
sd 1:0:0:0: [sdb] Synchronizing SCSI cache
sd 1:0:0:0: [sdb] Stopping disk
ata2.00: disabled
and then when I switch the drive off :
ata2: exception Emask 0x10 SAct 0x0 SErr 0x1990000 action 0xa frozen
ata2: SError: { PHYRdyChg 10B8B Dispar LinkSeq TrStaTrns }
ata2: hard resetting link
ata2: SATA link down (SStatus 0 SControl 300)
ata2: EH complete
So thanks for the help and sorry for the bother. =)
--
Everything is more fun naked except cooking with grease.