On 11/09/12 00:12, Ralf Müller wrote: > Besides all the stuff about fix your server, a raid is not a backup and you risk your data - simply add a write intent bitmap: > > mdadm /dev/md2 --grow --bitmap=internal I've added this across a number of my systems now, and it seems to work really well (Thank You), especially one system which has a RAID1 with an external USB drive + internal drive which normally take over 2 days for a full resync. Can you suggest if there is any dis-advantage to using the bitmap (maybe write performance will suffer), or disk space is reduced, or .... While I can see the benefits, I'm just wondering if it might be too good to be true, or what I am missing.... Thanks again for your assistance. Regards, Adam -- Adam Goryachev Website Managers Ph: +61 2 8304 0000 adam@xxxxxxxxxxxxxxxxxxxxxx Fax: +61 2 8304 0001 www.websitemanagers.com.au -- 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
