Dear readers, seems like memory is leaking when a RAID10-array is reshaped. Here are the details of what I did: RAID10-array consisting of 13 disks (2TB each) and one spare was grown into a 16 disk RAID10-array by adding two more spares and then doing mdadm --grow /dev/md5 --raid-devices=16 When the reshape operation reached 80% (after 20 hours) the system became unresponsive and crashed soon after. Console output showed something like "... could not allocate memory block ..." The machine has 32GB of RAM. After the machine was rebooted the reshape operation was running for 6 more hours and was followed by an 8 hour resync. Everything seems to be OK now, but according to /proc/meminfo only 15GB of RAM are available. Much too low for a system that is almost idle. I will reboot the machine at our next maintenance window and compare its available memory with the situation right now. Is restarting the reshape operation after a crash really safe? Should I check the correctness of my array somehow? Kind regards Peter Koch -- 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
