On 29 May 2013 18:12, mick mbm@rlogin.net wrote:
But it gives no answer. My queries show various "events" numbers. Should I be concerned?
As I understand it, and based on https://raid.wiki.kernel.org/index.php/RAID_Recovery, events is a record of writes to the disks.
If I look at: mdadm --examine /dev/sd[a-z]1 | egrep 'Event|/dev/sd' on one of my machines, I see each of my 4 disks has an event count of 9760, which is good as it means all four disks are "in sync"; if one of them was lower than this it would have missed something. This is what mdadm uses to determine whether to automatically assemble an array.
If I look at: mdadm --query --detail /dev/md0 the value I see for Events is 0.9760, ie the same value (with the 0. suffix). So why the 0. suffix I have no idea but the events value should be non-zero and ever increasing, by the look of things.
Mark -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0844 251 1450 Registered in England (0456 0902) @ 13 Clarke Rd, Milton Keynes, MK1 1LG