Thus spake Peter Sj?berg (peters@techwiz.ca): > On Sat, 2004-02-07 at 12:37, Mike Perry wrote: > > Thus spake Mike Perry (mikepery@fscked.org): > > Anyways, sorry for the spam, but I imagine at least one other poor sap > > out there will find this useful ;) > I'm that one. > I ended up at the same place but for another reason. I was in a hurry to > build my system and knew that converting a ext3 to raid would cause some > problem because of some extra raid info, so I defined a raid1 with only > one disk. Later I bought the other disk and tried to add it by changing > /etc/raidtab but that did of course not work and it was at this point I > started to actually read the doc... Yeah, this sounds like my exact scenario, give or take a few details. > I saw reference to an old version of mkraid that would reinitialize the > superblock only (--superblock-only) and keep the data, but newer > raidtools doesn't do that. If that been there or some manpage in the > later version describing it a bit clearer I could dear to do mkraid -f > but with all incarnations of the raid software I no longer know what is > safe in my version I concur. The manpages really should clear up that raidhotadd (and mdadm -a) only add spares. And they should further clarify that spares are essentially useless and lie dormant.. The names of these commands/options are very deceptive to the new user... > My current state is that I have root mounted as /dev/md0 created with > one disk (/dev/hda5) as disk 0. I have since then added another disk and > partitioned it equal. I now want to add /dev/hdc5 to md0 (was never > mentioned before). If I add that to raidtab as failed-disk and do > "mkraid -f", will I loose anything? I would put your data on both just in case. But yes, this should work just fine. The sync should start as soon as you raidhotadd a failed disk. Sorry for the late reply.. Was away for the weekend (which was the cause of my original impatience and need to quickly find a solution..) -- Mike Perry Mad Computer Scientist fscked.org evil labs - 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
