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This is a warning based on information provided by the kernel. Misalignment mostly has performance impacts; on SSDs it may result in additional wear. It won't cause corruption! Software RAID 10 + LVM on mixed drives, sector alignment? has lots of useful information on this, including recipes to set things up correctly.


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If you have LVM on it, the easy way out is to make a new partition of the free space, set it up as physical volume in LVM and add that physical volume to your volume group. You're probably right that gparted won't touch the partition as it is in use.


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You need to tell the kernel that the partition table has changed after you make any changes to partition tables with fdisk, cfdisk, or parted etc. There are two main ways of doing this: Reboot. The kernel will detect the new partition table and use it automatically. run partprobe as root. This will tell the kernel to scan the block-device partitions and ...


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Adding a single 4TB drive to your multi-mirror array destroys any ability to trust in the redundancy that RAID is supposed to provide. It would be safe if you could add a second 4TB drive, but (as you have no spare drive ports) you can't do that without removing one of the existing disks. If I were you, I'd remove one of the mirror disks, add a second 4TB ...


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This appears to be a bug in older versions of LVM. A bug that could be corrected by compiling from source with a different set of flags to add support for thin devices. I can not speak for the SystemRescueCD you mentioned, because I have never used it, but it may be using an older version of LVM, for whatever reason, which may have this very bug. Since ...


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With the help above from Alexander Batischev, and some very useful information from Reddit user cookie_enthusiast on the /r/linuxquestions page on Reddit, I managed to get this working. It turns out that GRUB2 works well with UUIDs, and not so well with device names. With this knowledge in mind, we need the following 4 UUIDs at hand, before we can ...



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