Re: System hanging, error messages with USB drive on FreeBSD 8.1
On 8/28/2011 11:20 AM, Brett Glass wrote: > At 11:43 PM 8/27/2011, Polytropon wrote: > >> I'm not sure if this will help you, but I also had similar >> problems with a Kingston USB stick (normal storage stick, >> no removable microSD card). It didn't work on any of my >> FreeBSD systems. So I finally returned it to the shop and >> got a Sony USB stick instead - no problems, works fine. >> >> So this is my assumption: Some hardware vendors maybe >> improperly implement the USB protocol in their devices, > > A Web search reveals that there are dozens which apparently > have problems with FreeBSD, while Windows has problems with > none of them. This leads me to believe that the problem is > in FreeBSD, not the hardware. The vendors most probably write their own drivers for windows. They do not for FreeBSD and its best effort for FreeBSD. I have yet to come across a USB umass device that needs a quirks setting to make it work. But I am sure there are many out there as there are dozens of different vendors/OEMs out there of all sorts of quality. Having to deal with the edge cases using a single command is perfectly acceptable to me. If setting a quirks value for FreeBSD is not workable for you, perhaps Windows is a better choice for your use. ---Mike -- --- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, m...@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/ ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: System hanging, error messages with USB drive on FreeBSD 8.1
At 11:43 PM 8/27/2011, Polytropon wrote: >I'm not sure if this will help you, but I also had similar >problems with a Kingston USB stick (normal storage stick, >no removable microSD card). It didn't work on any of my >FreeBSD systems. So I finally returned it to the shop and >got a Sony USB stick instead - no problems, works fine. > >So this is my assumption: Some hardware vendors maybe >improperly implement the USB protocol in their devices, A Web search reveals that there are dozens which apparently have problems with FreeBSD, while Windows has problems with none of them. This leads me to believe that the problem is in FreeBSD, not the hardware. USB mass storage devices are, for some reason, handled by FreeBSD's SCSI/CAM subsystem, which seems to want to treat a USB storage device (a memory stick or a memory card in an adapter) as a full-out SCSI device when it is not. The SCSI commands which fail usually have to do with flushing the cache and/or other functions which just don't apply to a USB stick. It looks as if the devices which do not have trouble are just IGNORING the SCSI commands, not executing them. In short, FreeBSD really should not be trying to issue them in the first place. In short, this shouldn't be something that's handled by "quirks." Instead, the system simply should recognize that a USB memory stick is not a SCSI drive. --Brett Glass ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
Re: System hanging, error messages with USB drive on FreeBSD 8.1
On Sat, 27 Aug 2011 17:01:24 -0600, Brett Glass wrote: > I'm working with a FreeBSD 8.1-RELEASE/amd64 machine that's > attempting to write data to an ordinary Kingston 8 GB microSD card. > The card has been inserted into its USB adapter and plugged into a > USB port on the machine. The system is locking up repeatedly with > messages that say > > (da1:umass-sim1:1:0:0): SYNCHRONIZE CACHE(10). CDB: 35 0 0 0 0 0 0 0 0 0 > (da1:umass-sim1:1:0:0): SCSI sense: Error code 0x52 > > A Web search reveals that problems like this have cropped up for > many, many FreeBSD users as far back as 4.x. But I can't seem to > find any solution (which amazes me; if there's a bug, one would > think it would have gotten some attention). Do I have to abandon > the use of FreeBSD with USB thumb drives (or maybe with USB > altogether)? Hope not, but I may have to if I can't get this fixed. I'm not sure if this will help you, but I also had similar problems with a Kingston USB stick (normal storage stick, no removable microSD card). It didn't work on any of my FreeBSD systems. So I finally returned it to the shop and got a Sony USB stick instead - no problems, works fine. So this is my assumption: Some hardware vendors maybe improperly implement the USB protocol in their devices, so any OS requiring standard conformation of the attached devices (which are malfunctioning according to the USB protocol specifications) signals an error. I also have a "multi card reader" (CF, SD, microSD and who knows what else, it's a "hama USB 2.0 Card Reader 35 in 1") which attaches per USB. It also does not work properly (also causes, at least when I tried it the last time on a 7-STABLE system). The built-in card reader of my home PC works fine instead. Recently, I had to access the USB stick of a friend. The stick didn't work at first try, and the friend told me to try multiple times; he stated that he would have to do that on his Linux system too. So I tried a second time - and magically, the stick worked as intended. Maybe this approach can help here too? But when you say that attaching the USB adaptor causes the system to _hang_, this means that the OS detected a severe hardware malfunction. The OS doesn't stop for no reason; it does so in order to prevent further damages. This behaviour is intended. What's _not_ intended is hardware manufacturers poorly caring for the implementation of the "software part" in their storage devices. Sadly that's not a typical sign of "el cheapo" stuff anymore - even expensive devices sometimes suffer from that poor quality, i. e. their _customers_ are suffering. :-( So if you have problems with such hardware, returning it is an option, and then try some different brand or model. It helps if you print out a dmesg report - looks exceptionally good when done on green-bar paper :-) - and use a red marker to highlight the USB related error messages. Then just say: "This USB adaptor is broken." No average salesman will disagree, and you should immediately get your money back. I've tried that, it works fine. :-) -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
System hanging, error messages with USB drive on FreeBSD 8.1
I'm working with a FreeBSD 8.1-RELEASE/amd64 machine that's attempting to write data to an ordinary Kingston 8 GB microSD card. The card has been inserted into its USB adapter and plugged into a USB port on the machine. The system is locking up repeatedly with messages that say (da1:umass-sim1:1:0:0): SYNCHRONIZE CACHE(10). CDB: 35 0 0 0 0 0 0 0 0 0 (da1:umass-sim1:1:0:0): SCSI sense: Error code 0x52 A Web search reveals that problems like this have cropped up for many, many FreeBSD users as far back as 4.x. But I can't seem to find any solution (which amazes me; if there's a bug, one would think it would have gotten some attention). Do I have to abandon the use of FreeBSD with USB thumb drives (or maybe with USB altogether)? Hope not, but I may have to if I can't get this fixed. --Brett Glass ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"
