Hi all I've lost quite a lot of data on my /home raid partition and I'm wondering what exactly I did to make it happen. I'd like to know so something similar won't happen in the future. I'm pretty much a raid newbie. I setup raid1 on my home server and I'm guessing that something like this happened. Please tell me if it's possible. * Some time ago I did something to have one device fail which resulted md3 in having only 1 device. * Time went by without me noticing (because I suck) * An update broke my raid setup and gave me a kernel panic (because I suck). Didn't put the mdadm and raid hooks in mkinitcpio.conf * Booted a live-cd, mounted the drives and chrooted back into the system and fixed the mkinitcpio.conf * Rebooted and noticed that md3 was running with only 1 device * Added sdb4 to md3 and it then read 1 device with 1 spare * cat /proc/mdstat started to say "recovery" * All data from approx. 1 year is gone I guessing that the old (not updated) device was set as "master" and the data on the drive (containing newer data) was overwritten by data on the old device - is this plausible? If not what exactly did I do to delete all of the data? It's not the end of the world but it does suck a lot - especially some email and pictures are gone that I will miss. Any clarifications will be much appreciated. -- View this message in context: http://www.nabble.com/device-with-newer-data-added-as-spare---data-now-gone--tp24218843p24218843.html Sent from the linux-raid mailing list archive at Nabble.com. -- 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
