![]() In cases where the ZFS label is not at the expected offset a more general wipe operation will be required to ensure that the ZFS label is removed and the disk can be initialized.īefore proceeding, review and ensure the disk is not in use in any other capacity - the following procedure will irrecoverably destroy the VTOC and any data in the beginning of the disk.ġ. If running the recommended DD command correct the condition and the disk remains unable to initialize then the ZFS label is not at the expected offset. The above indicates that VM is detecting a ZFS signature on slice 2: If you still want to initialize this device for VxVM use, please destroy the zpool by running 'zpool' command if it is still active, and then remove the ZFS signature from each of these slice(s) as follows:ĭd if=/dev/zero of=/dev/vx/rdmp/c1t1d0s oseek=31 bs=512 count=1 Slice(s) 2 are in use as ZFS zpool (or former) devices. VxVM vxdisksetup ERROR V-5-2-5716 Disk c1t1d0s2 is in use by ZFS. Error Message # /etc/vx/bin/vxdisksetup -ir c1t1d0 It does not store any personal data.Storage Foundation 5.1 will not initialize disks on which a ZFS label is detected but the detection is not limited to block 31 so if a ZFS label resides somewhere else in the first 32 blocks of a partition, the error will be reported but zeroing out offset 31 will not fix the issue. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. If you really want to wipe-out everything on your disk you might want to consider using a utility called DBan. It is important to repeat this command a few times to ensure all data is erased. Completely erasing all data on your entire hard disk can be achieved by overwriting all sectors with zero’s using the “cat” command # cat /dev/zero >/dev/sda Since wipefs does not erase the filesystem itself nor any other data from the device you will need to do this separately which is particularly of importance if you sell your hardware. Same can be achieved using the “–type” option or in short “-t”. To remove only a specific signature you could use the “–offset” option or in short “-o”. If you want to remove the signatures and metadata of not just the entire block device but also the created partitions at once, you can do so by simply adding an asterisk to the device name. ![]() # ls -l ~/wipefs-*.bak -rw- 1 root root 8 Feb 27 18:54 /root/wipefs-sda-0x00000218.bakĪnd restore using the “dd” command. To restore first find the relevant back-up file. This can be done adding the “–backup” option or in short “-b”. You might want to create a back-up in case something goes wrong and you need to perform a restore. Note that “-a” and “-f” are the short versions of the “–all” and “–force” options, respectively. To wipe the disk /dev/sda run the following command : # wipefs -a -f /dev/sda # wipefs /dev/sda* DEVICE OFFSET TYPE UUID LABEL For this we need to add an asterisk at the end of the device name as a wildcard. Since wipefs does not work recursively running the command on an entire block device (e.g., /dev/sda), will not show the signatures of every partition on the device. # wipefs /dev/sda1 DEVICE OFFSET TYPE UUID LABEL To display the current signatures on a hard disk run the following command : # wipefs /dev/sda Removing metadata and signatures from previously used hard drives is important to ensure that when they are reused in a new system, they do not contain information that could interfere with the installation of an operating system and underlying file system and cause the process to fail. Wipefs is a great tool for removing signatures and metadata from used hard drives that have been previously partitioned and formatted.
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