--- On Fri, 8/4/11, NeilBrown <neilb@xxxxxxx> wrote: > From: NeilBrown <neilb@xxxxxxx> > Subject: Re: RAID6 data-check took almost 2 hours, clicking sounds, system unresponsive > To: "Gavin Flower" <gavinflower@xxxxxxxxx> > Cc: linux-raid@xxxxxxxxxxxxxxx > Date: Friday, 8 April, 2011, 21:34 > On Thu, 7 Apr 2011 18:32:04 -0700 > (PDT) Gavin Flower <gavinflower@xxxxxxxxx> > wrote: > > > Hi Neil, > > > > My original email may have been eaten: as it did not > appear on the list, nor did I get an error message > back. So perhaps there was a problem with the attached > files. > > > > I will resend the attachments one at a time in > separate emails. > > > > > > Cheers, > > Gavin > > > > [begin original] > > Hi Neil, > > > > Your help (or anybody else's) would be greatly > appreciated, yet again > > Hi Gavin, > it isn't clear to me what help you want. > > Obviously there is some sort of hardware issue - possible a > drive, possibly a > bus problem - I really don't know. > > Apart from that things look normal. > > What exactly did you want explained? > > NeilBrown I guess I was surprised that the RAID system appeared normal and that it did not register any errors. I was hoping to get an idea as to which drive was problematic. I get the feeling, from your reply, that this is not specifically a RAID problem, that it just happens to affect a RAID array. I had thought that the RAID system should have been able to give me better diagnostics, but possibly I am being (inadvertently) unreasonable! Not sure what the significance of this mismatch is, and what I should do about it. # cat /sys/block/md2/md/mismatch_cnt 28904 # Thanks, Gavin > > > > This morning, I noticed my system was extremely > unresponsive, and that there were clicking sounds coming > from one of my 5 hard drives. Also that there was > excessive disk I/O even for trivial things like bring up a > directory window, and lots of ata3 errors being reported to > the system log. These symptoms were mostly during a > raid check process. > > > > Somewhere along the way, I seemed to have lost my swap > partition! > > > > So I did some extensive investigations, which took > most of the day. My notes were created in OpenDocument > format using LibreOffice, but I have converted them to txt > format for the include - but I can supply the ,odt file if > requested. > > > > I Have included 2 files: > > > my notes: raid-notes-20110407a.txt > > selected log entries: > messages-gcf-20110407-ATA > > > > If there are some additional diagnostics that might > prove useful, please let me know. > > > > > > Cheers, > > Gavin > > [end original] > > -- > > All Adults share the Responsibility > > to help Raise Today's Children, > > for they are Tomorrow's Society! > > -- > > 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 > > -- 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
