Liwei <xieliwei@xxxxxxxxx> writes: > Hi list, > I tried growing a RAID6 array by executing the mdadm --add and > mdadm --grow --raid-devices commands. Usually that should run fine and > I can continue with pvresize. That is incorrect. You cannot run "pvresize" until the reshape completes. > > This time however, the actual usable raid array size did not > change even though reshape begins. In my confusion, I decided to > reboot. That didn't solve the problem (and apparently the reshape was > interrupted, but mdadm shows the grown array as clean?) Clean is expected. It will be in an intermediate state, part has reshaped to extra devices, part is still the original. > > I then executed mdadm --grow --size=max, which seemed to have > increased the array size, but apparently by too much. Now I'm getting > "attempt to access beyond end of device" errors for each of the > component drives. A new reshape operation has also begun, which I > expect would fail as the array size is now too big. "--size" isn't the same as "--array-size". "--size" is the size of the component devices to use. The "attempt to access beyond end of device" errors are unexpected but presumably related o the "--size=max". Maybe the 'max' chosen was too large. That suggests a bug somewhere. You probably want to reduce that size back to where it was. > > What did I do wrong and how can I remedy this? Could we start with "mdadm --examine" status of all devices, "mdadm --detail" of the array, and all kernel messages that could possibly relate to the array since you first started this exercise? NeilBrown > > Liwei > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html
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