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Howdy, |
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I'm getting closer to swapping out a hard drive in one of my LVM |
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groups. It has two drives in it. They are sdc and sdd as shown below. |
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--- Physical volume --- |
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PV Name /dev/sdc1 |
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VG Name Home2 |
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PV Size 2.73 TiB / not usable 3.44 MiB |
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Allocatable yes (but full) |
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PE Size 4.00 MiB |
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Total PE 715396 |
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Free PE 0 |
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Allocated PE 715396 |
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PV UUID ki26nc-pgTs-PCx9-qPBQ-RJNd-5Rd7-aj8sR4 |
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--- Physical volume --- |
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PV Name /dev/sdd1 |
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VG Name Home2 |
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PV Size 2.73 TiB / not usable 3.44 MiB |
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Allocatable yes (but full) |
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PE Size 4.00 MiB |
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Total PE 715396 |
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Free PE 0 |
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Allocated PE 715396 |
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PV UUID vg4f2b-1d6N-61hF-Adl7-0wzf-nxn6-Ol5ybJ |
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I'm planning to change some connections while swapping and wanted to be |
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sure of something before I do any moves like this. Let's say I move sdc |
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and it becomes sdb. Will LVM still see it the same way? I suspect it |
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tracks the drive by the UUID which stays the same no matter what port or |
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sd letter it gets BUT I want to be sure. I've drawn out a diagram of |
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how the drives are currently connected so I could go back if needed but |
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still want to rearrange things. Am I correct that changing what drive |
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connects to what sata port won't matter to LVM and how it sees them? |
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Also, what if I connect one to the PCIe card I have? Will it still see |
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it the same way? |
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Also, I found a wonderful guide for my upcoming move. It is located here: |
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http://tldp.org/HOWTO/LVM-HOWTO/removeadisk.html |
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Scroll down a bit to: 13.5.2. Distributing Old Extents to a New |
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Replacement Disk |
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That covers exactly what I am doing. Even tho Grant and others say it |
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is that easy, I still find it hard to believe. O_0 I sure am glad I |
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was talked into using LVM. I think it was Alan that first mentioned it |
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but not sure. |
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Thanks much. |
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Dale |
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:-) :-) |
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P. S. I'm still copying over my /home to the new 8TB backup drive. |
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While it is copying at speeds of 20MBs/sec for some files to as high as |
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160MBs/sec for other files, it takes a long time with that much data. |
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It is running at a much better speed than it was when I started the |
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other thread. |
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