Hi Neil, hi all, I discovered a weird behavior of mdadm -Db - it will switch a RAID array from read-auto state to write-pending. For DDF (and possibly other formats) this will cause metadata writes. If I read the code correctly, the reason is that mdadm -Db will use the GET_BITMAP_FILE ioctl, which calls md_allow_write(). I saw this on a CentOS 6.3 kernel but comparing the code I didn't see a difference in recent kernels. I am wondering if this is intentional, and if no, if anything could be done about it. It is certainly surprising behavior. Regards Martin -- 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
