Date: Sun, 11 Oct 2020 11:21:34 +0100 From: Graham Perrin <grahamperrin@gmail.com> To: freebsd-current@freebsd.org Subject: Re: zpool export: umount failed, device inexplicably busy Message-ID: <4125dad7-b1ea-bf20-4996-6a138ff202eb@gmail.com> In-Reply-To: <a4e3b895-78d2-4b0a-1cb1-477f35bc437c@gmail.com> References: <a4e3b895-78d2-4b0a-1cb1-477f35bc437c@gmail.com>
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On 06/10/2020 21:29, Graham Perrin wrote: > lsof finds no open file. > > How else might I tell why the device is busy? > > Mobile hard disk drive, USB. The same problem this morning, ---- root@momh167-gjp4-8570p:~ # zpool export Transcend cannot unmount '/Volumes/t500': umount failed root@momh167-gjp4-8570p:~ # lsof /Volumes/t500/ lsof: WARNING: device cache mismatch: /dev/usb/0.5.2 lsof: WARNING: /root/.lsof_momh167-gjp4-8570p was updated. root@momh167-gjp4-8570p:~ # lsof /Volumes/t500/ root@momh167-gjp4-8570p:~ # usbconfig -d 0.5 dump_all_desc ugen0.5: <SMSC USB5534> at usbus0, cfg=0 md=HOST spd=SUPER (5.0Gbps) pwr=SAVE (0mA) bLength = 0x0012 bDescriptorType = 0x0001 bcdUSB = 0x0300 bDeviceClass = 0x0009 <HUB> bDeviceSubClass = 0x0000 bDeviceProtocol = 0x0003 bMaxPacketSize0 = 0x0009 idVendor = 0x0424 idProduct = 0x5434 bcdDevice = 0x3082 iManufacturer = 0x0002 <SMSC> iProduct = 0x0003 <USB5534> iSerialNumber = 0x0001 <1239567> bNumConfigurations = 0x0001 Configuration index 0 bLength = 0x0009 bDescriptorType = 0x0002 wTotalLength = 0x001f bNumInterfaces = 0x0001 bConfigurationValue = 0x0001 iConfiguration = 0x0000 <no string> bmAttributes = 0x00e0 bMaxPower = 0x0000 Interface 0 bLength = 0x0009 bDescriptorType = 0x0004 bInterfaceNumber = 0x0000 bAlternateSetting = 0x0000 bNumEndpoints = 0x0001 bInterfaceClass = 0x0009 <HUB> bInterfaceSubClass = 0x0000 bInterfaceProtocol = 0x0000 iInterface = 0x0000 <no string> Endpoint 0 bLength = 0x0007 bDescriptorType = 0x0005 bEndpointAddress = 0x0081 <IN> bmAttributes = 0x0013 <INTERRUPT> wMaxPacketSize = 0x0002 bInterval = 0x0008 bRefresh = 0x0000 bSynchAddress = 0x0000 Additional Descriptor bLength = 0x06 bDescriptorType = 0x30 bDescriptorSubType = 0x00 RAW dump: 0x00 | 0x06, 0x30, 0x00, 0x00, 0x02, 0x00 root@momh167-gjp4-8570p:~ # zpool export Transcend cannot unmount '/Volumes/t500': umount failed root@momh167-gjp4-8570p:~ # umount /Volumes/t500 umount: unmount of /Volumes/t500 failed: Device busy root@momh167-gjp4-8570p:~ # lsof /Volumes/t500/ root@momh167-gjp4-8570p:~ # ---- When this last occurred, I could export the pool after signing out from KDE.
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