After doing a resize of a VM from the Proxmox UI, I attempted to get the RHEL 9.3 VM to pickup the change with the usual 'echo 1 > /sys/class/block/sda/device/rescan' but nothing happened. What I'm used to seeing in VMware is the kernel picks up a device change that's visible in "dmesg" output. No such joy with Proxmox. I've tried with rescanning the bus (echo "- - -" > /sys/.../scan) but no joy there either. Is there some other magic required to get the VM to pickup the change to the scsi virtual device? Yes, the storage is of Bus/Device type "SCSI" ("VirtIO SCSI single") and not a VirtIO device.
[SOLVED] rescan of scsi disk sda in RHEL9.3 VM doesn't work
- Thread starter flatpzero
- Start date
they are no need to rescan drive inside the vm, the change should be auto detected. (check with parted /dev/sdx to be sure)
are you sure that it's not simply the filesystem (or lvm volume if you use it) that is not extended ?
are you sure that it's not simply the filesystem (or lvm volume if you use it) that is not extended ?
Actually, now that you mention it, when I check with parted (or "fdisk -l") the device does show up as the full size device. I'm a bit surprised at the lack of kernel messages mentioning that.
Did you check from the hypervisor whether the disk was extended? The check will depend on the backend storage type you are using. I.e. if its LVM - "lvs", if QCOW - "qemu-img info", etc.
If the disk was extended on the hypervisor side properly, does the VM pick it up after a reboot?
The problem may be in your VM's kernel and/or specific storage controller combination. There haven't been any reports of extend not working properly in the recent times.
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