Now, it is possible to shrink the PV on the NBD device. That device will be read-write, it will initially contain whatever the backing device (old SSD) had, but changes will be written into the qcow2 file (so the read-only status of the old SSD will not interfere with writes to the NBD). Load the nbd driver and attach the image file as NBD disk with qemu-nbd. Create a difference overlay scratch image file with physical backing device - old SSD, in qemu-img arguments have -b /dev/sdb3. In general it is the same as I described in detail in the other answer. You have to shrink the PV before cloning it with dd, but read only status of the SSD prohibits this.īut, using an overlay difference image you can still do it. SSD patriot p300, it continued to degrade and more than 50% of bad sectors. I connected a 500GB drive for the test and started copying using DD. If the first drive wasn't write-protected, I could try to reduce the size of the partition, and then copy using DD. 
I am working through live linux on iODD-2531.Īnd I, in turn, connect to the system via ssh.Ĭopying from a 128gb drive to a 120gb drive. UPD: Both SSDs are connected via an NVME-usb adapter. What other ways are there? Maybe there is software to clone partitions from under the BIOS? Sudo dd if=/dev/sdb3 of=/dev/sdc3 status=progress It will not be possible to transfer through DD due to the difference in volume. The SSD went into read-only mode, so you need to move the partition to a working SSD, but I encountered the fact that the LVM size is different:
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