- #Wipefs error probing initialization failed how to#
- #Wipefs error probing initialization failed install#
- #Wipefs error probing initialization failed code#
It’ll be even faster if using pure Infiniband applications (rather than IPoIB, since more processing is done in the Infiniband hardware, rather than CPUs having to shuffle the TCP/IP stack, among other factors). The cards in the above example are pushing a healthy 25 Gbps. On the second box, throw data at your first one ( -P 2 means to use 2 threads): $ iperf -c 10.0.0.1 -P 2Ĭlient connecting to 10.0.0.1, TCP port 5001 On the first box, put iperf into server mode: $ sudo iperf -s -i 1 $ sudo sh -c "echo connected > /sys/class/net/ib0/mode" $ sudo ifconfig ib0 10.0.0.1 # Use. It’s important to put the cards into connected mode and set a large MTU: $ sudo modprobe ib_ipoib On both boxes, we’ll use IPoIB (IP over Infiniband) to assign a couple temporary IPs and iperf to run a performance test.
#Wipefs error probing initialization failed install#
iperf is already installed ( apt-get install iperf). In the examples below, I’m using Ubuntu Linux and the interface name of the IB card is simply ib0. Here’s a quick way to throw some data through them and see.
#Wipefs error probing initialization failed code#
Wipefs: error: /dev/sdz: probing initialization failed: No such file or directoryĮxit code `` indicates that wipefs operation was not performed.Įxit code 100 indicates that wipefs finished successfully.Įxit code 1 indicates that wipefs operation finished with an error.So, you grabbed a few Infiniband cards for cheap off eBay and are wondering if they’re any good? $ sudo pvdisplay -noheadings -select pv_name=/dev/sdz -columns -options pv_name | tr -d | grep -q ^/dev/sdz$ || (sudo wipefs -no-act -types noLVM2_member -all /dev/sdz & exit 100) dev/sde: calling ioctl to re-read partition table: SuccessĬheck on non-existing disk. dev/sde: 2 bytes were erased at offset 0x000001fe (PMBR): 55 aa $ sudo pvdisplay -noheadings -select pv_name=/dev/sde -columns -options pv_name | tr -d | grep -q ^/dev/sde$ || (sudo wipefs -types noLVM2_member -all /dev/sde & exit 100) $ sudo pvdisplay -noheadings -select pv_name=/dev/sdc -columns -options pv_name | tr -d | grep -q ^/dev/sdc$ || (sudo wipefs -no-act -types noLVM2_member -all /dev/sdc & exit 100)Ĭheck on earlier used disk. Wipe the partition-table signatures when needed #Ĭombine querying for specific physical volume with wipefs exception for LVM2 members to wipe the partition-table signatures only when it is needed, so you can later create physical volume and add it to the specific volume group.Ĭheck on existing LVM2 member. Notice, it is an LVM2 member, a simple mistake can be devastating. dev/sdd: calling ioctl to re-read partition table: Success dev/sdd: 2 bytes were erased at offset 0x000001fe (PMBR): 55 aa $ sudo wipefs -no-act -types noLVM2_member -all /dev/sdd $ sudo wipefs -no-act -types noLVM2_member -all /dev/sdbĭry-run wipefs on a disk/partition that was used earlier and have some leftover data. The list or individual types can be prefixed with ’no’ to specify the types on which no action should be taken.ĭry-run wipefs on existing LVM2 member or empty disk/partition. More than one type may be specified in a comma-separated list. sdb wipefs: error: /dev/sdb: probing initialization failed: Read-only. Limit the set of printed or erased signatures. Program will now terminate., /zero of/dev/sdb statusprogress dd: failed to open. Wipe the partition-table signatures with one exception # Notice the empty result, do not rely on the exit code. $ sudo pvdisplay -noheadings -select vg_name=anydata,pv_name=/dev/any -columns -options pv_name | tr -d $ sudo pvdisplay -noheadings -select vg_name=data,pv_name=/dev/sdb -columns -options pv_name | tr -d Query the specific physical volume in the volume group. $ sudo pvdisplay -noheadings -select pv_name=/dev/sdc -columns -options pv_name | tr -d $ sudo pvdisplay -noheadings -select vg_name=data -columns -options pv_name | tr -d
Query physical volumes that belong to the specific volume group. $ sudo pvdisplay -noheadings -columns -options pv_name | tr -d In this example I will play with the /dev/sd physical volumes.
#Wipefs error probing initialization failed how to#
Today I will extend the how to fix device excluded by a filter blog post to include information on how to wipe filesystem or partition-table signatures except for LVM2 members, which is a great idea for automation.
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