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I am doing snapshots on an LVM Volume. It works, but since a few minutes I do get a warning message.

The command is:

sudo lvcreate -s /dev/$VG/$LV -n $SNAP_NAME $VS 2>>$LOG

The VG has enough space for a new LV. However the system issues a warning:

Reducing COW size 30.00 GiB down to maximum usable size 24.10 GiB

What does it mean, and why is this suddendly apearing?

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Just found the reason. COW means (copy on write) and indicates that the lv volume size is 24G but the snapshot command used creates 30G.

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