i donÂt know how you setup your kernel (with or without raid autodetect?) do you use kernel command line to setup raid? autodetect? here in my test machine iÂm using kernel command line (grub), i donÂt have a server with hotplug bay, i open the case and remove the wire with my hands =) after reconecting it with another device kerenel recognize the new device reread the parititions etc etc and i can add it to array again my grub is something like: md=0,/dev/sda,/dev/sdb ..... internal meta data, raid1, i didnÂt like the autodetect (itÂs good) but i prefer hardcoded kernel command line (itÂs not good with usb devices) 2011/2/23 Roberto Nunnari <roberto.nunnari@xxxxxxxx>: > Roberto Spadim wrote: >> >> sata2 without hot plug? > > Hi Roberto. > > I mean that there is no hot-plug bay, with sliding rails etc.. > The drives are connected to the mb using standard sata cables. > > >> check if your sda sdb sdc will change after removing it, itæ depends >> on your udev or another /dev filesystem > > Ok, thank you. > That means that if I take care to check the above, and > the new drive will be sdb, then taking the steps indicated > in my original post will do the job? > > Best regards. > Robi > > >> >> 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 1910200704 blocks [2/1] [U_] >>> >>> md0 : active raid1 sdb1[1] sda2[0] >>> Â Â 40957568 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 > sdb.sfdisk >>> # mdadm /dev/md1 -r /dev/sdb4 >>> # mdadm /dev/md0 -r /dev/sdb1 >>> # shutdown -h now >>> >>> replace the disk and boot (it should come back up, even without one >>> drive, >>> right?) >>> >>> # sfdisk /dev/sdb < sdb.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 >>> >>> Thank you very much and 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 >>> >> >> >> > > -- > 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
