=) nice hehe 2011/2/24 Roberto Nunnari <roberto.nunnari@xxxxxxxx>: > Roberto Nunnari wrote: >> >> Albert Pauw wrote: >>> >>> ÂOn 02/23/11 06:56 PM, Roberto Spadim wrote: >>>> >>>> sata2 without hot plug? >>>> check if your sda sdb sdc will change after removing it, itæ depends >>>> on your udev or another /dev filesystem >>>> >>>> 2011/2/23 Roberto Nunnari<roberto.nunnari@xxxxxxxx>: >>>>> >>>>> Hello. >>>>> >>>>> I have a linux box, with two 2TB sata HD in raid 1. >>>>> >>>>> Now, one disk is in failed state and it has no spares: >>>>> # cat /proc/mdstat >>>>> Personalities : [raid1] >>>>> md1 : active raid1 sdb4[2](F) sda4[0] >>>>> Â Â Â1910200704 blocks [2/1] [U_] >>>>> >>>>> md0 : active raid1 sdb1[1] sda2[0] >>>>> Â Â Â40957568 blocks [2/2] [UU] >>>>> >>>>> unused devices:<none> >>>>> >>>>> >>>>> The drives are not hot-plug, so I need to shutdown the box. >>>>> >>>>> My plan is to: >>>>> # sfdisk -d /dev/sdb> Âsdb.sfdisk >>>>> # mdadm /dev/md1 -r /dev/sdb4 >>> >>> -> removing should be ok, as the partition has failed in md1 >> >> ok. >> >> >>>>> # mdadm /dev/md0 -r /dev/sdb1 >>> >>> -> In this case, sdb1 hasn't failed according to the output of >>> /proc/mdstat, so you should fail it otherwise you can't remove it: >>> mdadm /dev/md0 -f /dev/sdb1 >>> mdadm /dev/md0 -r /dev/sdb1 >> >> good to know! Thank you. >> >> >>> >>>>> # shutdown -h now >>>>> >>>>> replace the disk and boot (it should come back up, even without one >>>>> drive, >>>>> right?) >>>>> >>>>> # sfdisk /dev/sdb< Âsdb.sfdisk >>>>> # mdadm /dev/md1 -a /dev/sdb4 >>>>> # mdadm /dev/md0 -a /dev/sdb1 >>>>> >>>>> and the drives should start to resync, right? >>>>> >>>>> This is my first time I do such a thing, so please, correct me >>>>> if the above is not correct, or is not a best practice for >>>>> my configuration. >>>>> >>>>> My last backup of md1 is of mid november, so I need to be >>>>> pretty sure I will not lose my data (over 1TB). >>>>> >>>>> A bit abount my environment: >>>>> # mdadm --version >>>>> mdadm - v1.12.0 - 14 June 2005 >>>>> # cat /etc/redhat-release >>>>> CentOS release 4.8 (Final) >>>>> # uname -rms >>>>> Linux 2.6.9-89.31.1.ELsmp i686 >>> >>> What about sdb2 an sdb3, are they in use as normal mountpoints, or swap. >>> Then these should be commented out in /etc/fstab >>> before you change the disk. >> >> Yes. They're normal mount point, so I'll have to >> comment them out before rebooting, especially the swap partition. >> Thank you for pointing that out! >> >> Best regards. >> Robi > > Thank you very much Roberto and Albert. > I replaced the defective drive. > md0 was rebuilt almost immediatly, md1 is still rebuilding > but already completed 77%. > > Great linux-raid md! > Best regards. > Robi > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at Âhttp://vger.kernel.org/majordomo-info.html > -- Roberto Spadim Spadim Technology / SPAEmpresarial -- 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
