I realized I was still on receiving the daily digest format last night, so I have probably screwed up the threading on this now. If you cc me directly maybe I can maintain the future threading. Ok, looking at Parted it looks like the resize (or resizepart) command will be what I will need. But that doesn't appear to help recognize the expanded disk, so I think I need something before that. That is what I thought the echo 1 > rescan would do for me. I will look more into fdisk to understand the capabilities there. I am going to take advantage of the holiday weekend in a few days to take care of this so I am trying to understand all of the options available to me before diving into the task. In response to Gordon also, I did rescan the drive as suggested and got the same results; no such file or directory. So then I did a search for the rescan file to see where it was present. Found it in a few locations, but this one looks to be the one that I would want to try. /sys/devices/pci0000:00/0000:00:01.1/host1/target1:0:0/1:0:0:0/ The rescan file was also located in just: /sys/bus/pci but don't know if that would do the job for the specific device. Thanks for everyone's input. Very helpful. More suggestions are welcome while I am still reading up on options. Jeff Date: Wed, 1 Sep 2021 13:15:37 -0400 From: Stephen John Smoogen<smooge at gmail.com> To: CentOS mailing list<centos at centos.org> Subject: Re: [CentOS] Troubles expanding file system. Message-ID: <CANnLRdhhRkMagTcZ+eqALoteYcXD26nMrHzv7L9F1A35jGS=3g at mail.gmail.com> Content-Type: text/plain; charset="UTF-8" On Wed, 1 Sept 2021 at 12:42, Jeff Boyce<jboyce at meridianenv.com> wrote: > Greetings - > > I have tried posting this four times now, from two different email > addresses (on the 25th, 27th, 30th, and 31st) and it never appeared. I > don't see it in the archives, so it appears to be getting dropped in > transition for some reason. I am not getting messages from the email > system saying it is undeliverable, or is bounced; I am sending as plain > text, not HTML, I stripped off my signature. If this makes it through, > someone please give me a clue why the others might not have. But that > is not as important as the real issue that I am trying to get addressed > below. Thanks for any assistance. > > I have a Dell PowerEdge server with a CentOS KVM host (Earth) with > one CentOS guest (Sequoia) that I am trying to expand the partition and > filesystem on. I have LVM logical volumes on the host system (Earth), > which are used as devices/partitions on the guest system (Sequoia). In > this particular situation I have successfully extended the logical > volume (lv_SeqEco) on Earth from 500GB to 700GB. > > 1. Checking the disk information (lsblk) on Earth shows that the > logical volume (lv_SeqEco) is now listed as 700GB. > > 2. Checking disk information (lsblk) on Sequoia shows that the disk > /dev/vde is still listed as 500GB, and partition /dev/vde1 where the > mount point /ecosystem is located is also listed as 500GB. > > 3. I had tried using the resize2fs command to expand the filesystem on > /dev/vde1, but it returned with the result that there was nothing to > do. Which makes sense now after I checked the disk information, since > /dev/vde on Sequoia has not increased from 500GB to 700GB. > Thanks for the long list of items of what you have done. In Fedora Infrastructure, we used this method to resize images in the past https://pagure.io/infra-docs/blob/main/f/docs/sysadmin-guide/sops/guestdisk.rst The guest system usually needs to have the `fdisk` , `gdisk` or `parted` commands rerun to resize the disk to its new size. > 4. On previous occasions when I have done this task, I would just start > GParted on Sequoia and use the GUI to expand the partition and > filesystem. A real quick and simple solution. > > 5. The problem I have now is that the VGA adapter on my server has died > and I have no graphical output to the attached monitor, nor to the iDrac > console display. So I am stuck doing this entirely by the command line > while logged into the system remotely. > > 6. I suspect that I need to rescan the devices on Sequoia so that it > recognizes the increased space that has been allocated from the extended > the logical volume. But when I did that (command below) it came back > with a no such file or directory. > > echo 1 > /sys/class/block/vde1/device/rescan > Not sure that would do anything. > 7. This server is being retired in the next few months, but I need this > additional space prior to migrating to the new system. Can someone give > me some guidance on what I am missing in this sequence? > > Let me know if I haven't been clear enough in the explanation of my > systems and objective. Thanks.