--- On Wed, 20/1/10, Brett Russ <bruss@xxxxxxxxxxx> wrote: > From: Brett Russ <bruss@xxxxxxxxxxx> > Subject: Re: Why does one get mismatches? > To: linux-raid@xxxxxxxxxxxxxxx > Date: Wednesday, 20 January, 2010, 14:19 > On 01/19/2010 05:04 AM, Jon > Hardcastle wrote: > > I kicked off a check/repair cycle on my machine after > i moved the > > phyiscal ordering of my drives around and I am now on > my second > > check/repair cycle and it has kept finding > mismatches. > > > > Is it correct that the mismatch value after a repair > was needed > > should equal the value present after a check? What if > it doesn't? > > What does it mean if another check STILL reveals > mismatches? > > > > I had something similar after i reshaped from raid 5 > to 6 i had to > > run check/repair/check/repair several times before i > got my 0. > > I think to diagnose this you'll need to show us the results > of running 'mdadm -E /dev/[hs]dX#' (i.e. /dev/sda2) for each > member device in the md device you're trying to assemble > *before* attempting to start the md device. This will > report on the state of that specific member device > (partition) and will show why a resync/repair would/would > not be needed. > > Note that if your md device is not in a read-only mode that > the member states may be changing underneath you as you run > the above command. Therefore, you should either stop the > device then run the commands, or at least have the device in > a read-only mode first. > > -BR > > -- > 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 > I will gather the information you require, but so it is clear it is a a echo 'check' that is kicking off the ultimate mismatch not from boot. Also, I have never marked the array as read-only whilst i have done it historically - I can but never have and this is a data storage array and isn't actually(shouldn't be) in use really whilst i am not there (can that be tested?!) the main OS drive md3 runs and completes without a problem.. ----------------------- N: Jon Hardcastle E: Jon@xxxxxxxxxxxxxxx 'Do not worry about tomorrow, for tomorrow will bring worries of its own.' *********** Please note, I am phasing out jd_hardcastle AT yahoo.com and replacing it with jon AT eHardcastle.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
