On Monday March 11, derek@cynicism.com wrote: > On Mon, 11 Mar 2002, Neil Brown wrote: > > > On Saturday March 9, derek@cynicism.com wrote: > > > > > mdadm: No super block found on /dev/md/3 (Expected magic a92b4efc, got > > > > > 77315132). > > > > > > mdadm: No super block found on /dev/md/3 (Expected magic a92b4efc, got > > > 77315132). Maybe you meant --detail? > > > > Yes, it seems that this is a very real problem. I'm not sure what the > > best solution is though. > > > > One idea I have had is to have a --query mode (of which --detail and > > --examine are considered submodes). > > mdadm --query /dev/md1 > > It occurs to me that simply adding another mode (command line > option) isn't going to fix this because it doesn't really make the > differences between --detail and --examine clearer. All it does is add > another layer to the same issue. Possibly true. Any sugestions? An awkwardness is that you want the --option to be a verb, but the difference that we need is a difference in nouns... > > > would tell you briefly about the array that md1 is, and about any > > array that md1 is part of, and would suggest --detail or --examine to > > get more information. Then the various documentation could highlight > > --query in the hope that people would use it first. > > Hmmm.. so you mean that mdadm -Q /dev/md1 might print out something like: > > /dev/md1: 18GB RAID-1 (member disks: /dev/sda1, /dev/sdb1 spares: /dev/sdc1) > Use -QD for more detail or -QE to examine member disks. or if /dev/md1 is also part of a RAID-0: /dev/md1: 18GB RAID-1 2 devices 1 spare. use "mdadm --detail /dev/md1" for more detail /dev/md1: device 2 of 72GB RAID-0 md0. use "mdadm --examine /dev/md1" for more detail Only md devices would get the first line. Every device would get the second line, though in some cases it would be: /dev/hda1: no RAID superblock found. This is not part of an MD/RAID array. NeilBrown > > --- > Derek Vadala, derek@cynicism.com, http://www.cynicism.com/~derek > > - > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
