Date: Sun, 6 Feb 2022 20:52:04 +0300 From: Mehmet Erol Sanliturk <m.e.sanliturk@gmail.com> To: Sean Bruno <sbruno@freebsd.org> Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: USB Disk Stalls on -current Message-ID: <CAOgwaMv0ztuiiGpXjw0AYRLpQLUwRThgLk7ejadNQ0aitx=p-g@mail.gmail.com> In-Reply-To: <7e8459e4-d708-7750-402c-cda2adf6199f@freebsd.org> References: <7e8459e4-d708-7750-402c-cda2adf6199f@freebsd.org>
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[-- Attachment #1 --] On Sun, Feb 6, 2022 at 8:15 PM Sean Bruno <sbruno@freebsd.org> wrote: > I'm doing something "gross" with ZFS & Plex on a little Intel NUC that I > have here at the house to provide me with a nice little NAS at home. > I'm using 2x USB2 external disks as the mirror. > > I noted that the two USB2 disks I'm using in a mirror seem to "stall" > from time to time and its not clear to me why. > > I'd like to poke further into the USB system but I'm not sure where I > should start to see if there is something amiss with the hardware (e.g. > the disks suck) or if FreeBSD is losing track of something during I/O > leading to a stall/timeout. > > I'm not seeing data loss or anything, I just note from time to time > during large file transfers that the clanking/grinding sound of the > spinning rust on my desk completely stops, the encoding of the video > files stops (so its waiting for a read to complete) and its gets much > quieter in my office. :-) > > sean > > I encountered such a case in Fedora Linux with an external 2.0 USB disk . When the external disk was connected to a 1.? USB port , the loading of operating system was terrifically slow or sometimes some parts normal . You may check your USB ports versions to ensure that they are conforming to each other . Board USB port may be 2.0 , but connected chassis USB port may be 1.? like in my chassis . When USB external disk is connected to the chassis USB 2.0 port , everything has become normal . Mehmet Erol Sanliturk [-- Attachment #2 --] <div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif;font-size:large"><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Feb 6, 2022 at 8:15 PM Sean Bruno <<a href="mailto:sbruno@freebsd.org">sbruno@freebsd.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I'm doing something "gross" with ZFS & Plex on a little Intel NUC that I <br> have here at the house to provide me with a nice little NAS at home. <br> I'm using 2x USB2 external disks as the mirror.<br> <br> I noted that the two USB2 disks I'm using in a mirror seem to "stall" <br> from time to time and its not clear to me why.<br> <br> I'd like to poke further into the USB system but I'm not sure where I <br> should start to see if there is something amiss with the hardware (e.g. <br> the disks suck) or if FreeBSD is losing track of something during I/O <br> leading to a stall/timeout.<br> <br> I'm not seeing data loss or anything, I just note from time to time <br> during large file transfers that the clanking/grinding sound of the <br> spinning rust on my desk completely stops, the encoding of the video <br> files stops (so its waiting for a read to complete) and its gets much <br> quieter in my office. :-)<br> <br> sean<br> <br></blockquote><div><br></div><div><br></div><div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default">I encountered such a case in Fedora Linux with an external 2.0 USB disk .</div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default">When the external disk was connected to a 1.? USB port , the loading of operating system</div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default">was terrifically slow or sometimes some parts normal .</div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default"><br></div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default">You may check your USB ports versions to ensure that they are conforming to each other .</div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default">Board USB port may be 2.0 , but connected chassis USB port may be 1.? like in my chassis .<br></div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default">When USB external disk is connected to the chassis USB 2.0 port , <br></div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default">everything has become normal .<br></div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default"><br></div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default"><br></div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default">Mehmet Erol Sanliturk<br></div><div style="font-family:tahoma,sans-serif;font-size:large" class="gmail_default"><br></div><br></div><div><br></div><div> </div></div></div>help
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