Hello, Neil. ..... > Possible you have bad memory, or a bad CPU, or you are overclocking > the CPU, or it is getting hot, or something. As seems to me all my problems has been started after i have started update MDADM. This is server worked normaly (but only not like soft-raid) more 2-3 years. Last 6 months it worked as soft-raid. All was normaly, Even I have added successfully 4th hdd into raid5 )when it stared was 3 hdd). And then Reshaping have been passed fine. Yesterday i have did memtest86 onto it server and 10 passes was WITH OUT any errors. Temperature of server is about 25 grad celsius. No overlocking, all set to default. Realy i do not know what to do because off wee nedd grow our storage, and we can not. unfortunately, At this moment - Mdadm do not help us in this decision, but very want it get. > But you clearly have a hardware error. > NeilBrown -- Best regards, Andreas-Sokov - 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