Remove README.pvusb and test - it is about dom0 tools
This commit is contained in:
Marek Marczykowski
parent
34b31c0f71
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ee2539a234
69
README.pvusb
69
README.pvusb
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Dedicated usbvm (optional)
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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In dom0, once:
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qvm-create -l red usbvm
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# FIXME: use your own PCI device IDs
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qvm-pci -a usbvm 00:1d.0
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qvm-pci -a usbvm 00:1d.1
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qvm-pci -a usbvm 00:1d.2
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qvm-pci -a usbvm 00:1d.7
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After each dom0 reboot:
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qvm-start usbvm
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List
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~~~~
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In dom0:
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qvm-usb -l
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Example output:
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dom0:7-4 0718:061a TDKMedia_Trans-It_Drive_070326AE8AF92D95 (attached to qdvp:0-1)
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dom0:7-5 0b05:1706 ASUS_802.11g_WLAN_Drive (attached to netvm:0-1)
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dom0:1-1 045e:0084 Microsoft_Basic_Optical_Mouse
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usbvm:4-6 05e3:0723 Generic_USB_Storage (attached to qdvp:1-1)
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Attach
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~~~~~~
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In dom0:
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qvm-usb -a [--no-auto-detach] <vm-name> <device-vm-name>:<backend-controller>-<backend-port>
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Example:
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qvm-usb -a netvm usbvm:4-1
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Detach
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~~~~~~
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In dom0:
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qvm-usb -d <vm-name>:<vusb-controller>-<vusb-port>
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Example:
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qvm-usb -d netvm:0-1
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Known issues
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~~~~~~~~~~~~
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List/attach/detach operations seem to work ok, devices are recognized by the target VM etc.
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But actual usage of the attached devices is unstable at best. In fact the only working device
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I saw was one USB stick (and this only after it took a minute to time out and reset the bus
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couple times). Kernel crashes are normal as well. I have not investigated these issues yet,
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I had similar experience with Marek's scripts.
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* System keyboard / mouse are listed and can be detached away
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* Virtual USB devices (ones created by PVUSB frontend) may be listed
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* The installation/configuration is not persistent, not retained between reboots
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* No debugging / logging / audit trail
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* When an attached device is physically unplugged, USB port remains mapped but not displayed
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in the list. If device is plugged back it continues to work. Unlisted device cannot be detached.
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* We are not attaching actual devices, but USB ports (different behavior from VMWare, might be confusing)
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* After device is detached from the frontend and returned back to the backend it is not alwayws usable there
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* Code changing configuration of pvusb fe/be and vusb bind/unbind helper are located
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misc/xl-qvm-usb-attach.py misc/xl-qvm-usb-detach.py misc/vusb-ctl.py. These helpers are
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deployed into the backend domain. The initialization code is qubesutils.py in usb_setup(),
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should probably also be moved into an external helper. Perhaps the functionality of these
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external helpers should be merged into libxl? The is one catch is invokation of vusb helper
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in the backend domain -- now it relies on qubes-specific API.
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* After reboot attached USB devices are not listed by 'qvm-usb -l' until replugged.
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#!/bin/sh
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tmpf=`mktemp`
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## === List
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echo 'qvm-block -l'
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qvm-block -l > $tmpf
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cat <<'END' | diff -u - $tmpf
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netvm:sda STORAGE_DEVICE () 0 B
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dom0:sdb1 Cruzer () 3 GiB
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dom0:sdb Cruzer () 3 GiB
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END
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## === Attach
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echo 'qvm-block -a'
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qvm-block -a work dom0:sdb | diff -u /dev/null -
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## === List again
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echo 'qvm-block -l'
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qvm-block -l > $tmpf
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cat <<'END' | diff -u - $tmpf
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netvm:sda STORAGE_DEVICE () 0 B
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dom0:sdb1 Cruzer () 3 GiB
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dom0:sdb Cruzer () 3 GiB (attached to 'work' as 'xvdi')
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END
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## === Use
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echo 'qvm-run work fdisk'
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qvm-run -qp work 'su - root -c "fdisk -l /dev/xvdi"' > $tmpf
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cat <<'END' | diff -u - $tmpf
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Disk /dev/xvdi: 4022 MB, 4022337024 bytes
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124 heads, 62 sectors/track, 1021 cylinders, total 7856127 sectors
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Units = sectors of 1 * 512 = 512 bytes
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Sector size (logical/physical): 512 bytes / 512 bytes
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I/O size (minimum/optimal): 512 bytes / 512 bytes
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Disk identifier: 0x3963a77b
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Device Boot Start End Blocks Id System
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/dev/xvdi1 * 62 7849447 3924693 c W95 FAT32 (LBA)
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END
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## === Detach
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echo 'qvm-block -d'
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qvm-block -d work dom0:sdb1 | diff -u /dev/null -
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rm $tmpf
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#!/bin/sh
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tmpf=`mktemp`
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sudo xenstore-ls -f qubes-usb-devices | sort > $tmpf
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cat << 'END' | diff -u - $tmpf
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qubes-usb-devices/2-1 = ""
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qubes-usb-devices/2-1/desc = "046a:0021 046a_0021"
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qubes-usb-devices/2-2 = ""
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qubes-usb-devices/2-2/desc = "045e:0745 Microsoft_Microsoft\xc2\xae_Nano_Transceiver_v1.0"
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END
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rm $tmpf
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#!/bin/sh
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tmpf=`mktemp`
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sudo xenstore-ls -f qubes-usb-devices | sort > $tmpf
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cat << 'END' | diff -u - $tmpf
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qubes-usb-devices/2-1 = ""
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qubes-usb-devices/2-1/desc = "046a:0021 046a_0021"
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qubes-usb-devices/2-2 = ""
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qubes-usb-devices/2-2/desc = "045e:0745 Microsoft_Microsoft\xc2\xae_Nano_Transceiver_v1.0"
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qubes-usb-devices/7-1 = ""
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qubes-usb-devices/7-1/desc = "07d1:3c0a Ralink_11n_Adapter_1.0"
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qubes-usb-devices/7-5 = ""
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qubes-usb-devices/7-5/desc = "0781:5530 SanDisk_Cruzer_1942531DB09038A6"
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END
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rm $tmpf
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@ -1,67 +0,0 @@
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#!/bin/sh
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tmpf=`mktemp`
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domu='qdvp'
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## === List
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echo 'qvm-usb -l'
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qvm-usb -l | sort > $tmpf
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cat <<'END' | diff -bu - $tmpf
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dom0:2-1 046a:0021 046a_0021
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dom0:2-2 045e:0745 Microsoft_Microsoft®_Nano_Transceiver_v1.0
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dom0:7-1 07d1:3c0a Ralink_11n_Adapter_1.0
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dom0:7-5 0781:5530 SanDisk_Cruzer_1942531DB09038A6
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END
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## === Attach
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echo 'qvm-usb -a'
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qvm-usb -a $domu dom0:7-5 | diff -bu /dev/null -
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#echo 'pvusb-script/usb-attach.py'
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#sudo /home/abb/pvusb-scripts/usb-attach.py 7-5 3 1
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## === List again
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echo 'qvm-usb -l'
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qvm-usb -l | sort > $tmpf
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# FIXME
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cat <<'END' | diff -bu - $tmpf
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dom0:2-1 046a:0021 046a_0021
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dom0:2-2 045e:0745 Microsoft_Microsoft®_Nano_Transceiver_v1.0
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dom0:7-1 07d1:3c0a Ralink_11n_Adapter_1.0
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dom0:7-5 0781:5530 SanDisk_Cruzer_1942531DB09038A6
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END
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read -p 'Press ENTER to continue'
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## === Use: try ls
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echo 'qvm-run $domu ls /dev/sda'
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qvm-run -p $domu 'ls /dev/sda' > $tmpf
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cat <<'END' | diff -bu - $tmpf
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/dev/sda
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END
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## === Use: try fdisk
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echo 'qvm-run $domu fdisk'
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qvm-run -p $domu 'su - root -c "fdisk -l /dev/sda"' > $tmpf
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cat <<'END' | diff -bu - $tmpf
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Disk /dev/sda: 4022 MB, 4022337024 bytes
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124 heads, 62 sectors/track, 1021 cylinders, total 7856127 sectors
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Units = sectors of 1 * 512 = 512 bytes
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Sector size (logical/physical): 512 bytes / 512 bytes
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I/O size (minimum/optimal): 512 bytes / 512 bytes
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Disk identifier: 0x3963a77b
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Device Boot Start End Blocks Id System
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/dev/sda1 * 62 7849447 3924693 c W95 FAT32 (LBA)
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END
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## === Detach
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#echo 'qvm-usb -d'
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#qvm-usb -d $domu:7-5 | diff -bu /dev/null -
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echo 'pvusb-script/usb-detach.py'
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sudo /home/abb/pvusb-scripts/usb-detach.py 7-5 4 1
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rm $tmpf
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