Neil Brown wrote: > On Tuesday October 30, david@xxxxxxxxxxxx wrote: >> The key question I think is: will md continue to grow an array even if it enters >> degraded mode during the grow? >> ie grow from a 6 drive array to a 7-of-8 degraded array? > > Yes, md can grow to a degraded array. If you get a single failure I > would expect it to abort the growth process, then restart where it > left off (after checking that that made sense). I read that he aborted it, then removed both drives before giving md a chance to restart. He said: After several minutes dmesg indicated that mdadm gave up and the grow process stopped. After googling around I tried the solutions that seemed most likely to work, including removing the new drives with mdadm --remove --force /dev/md1 /dev/sd[bc]1 and rebooting and *then* he: "ran mdadm -Af /dev/md1." >> In which case should he be able to re-add /dev/sdc and allow md to retry the >> grow? (possibly losing some data due to the sdc staleness) > > He only needs one of the two drives in there. I got the impression > that both sdc and sdb had reported errors. If not, and sdc really > seems OK, then "--assemble --force" listing all drives except sdb > should make it all work again. Kyle - I think you need to clarify this as it may not be too bad. Apologies if I misread something and sdc is bad too :) It may be an idea to let us (Neil) know what you've done and if you've done any writes to any devices before trying this assemble. David - 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
