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Re: [PLUG] How to break a software RAID mirror?
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Great idea to just unplug one drive and see what happens...if the system
does reboot how do I reconfig the raid not to complain?
Thanks
Dan
On Thu, 2007-08-30 at 13:34 -0400, Brian Stempin wrote:
> The only raid0 set that I see is /dev/md1. I don't see that volume
> mounted anywhere. Everything else is a raid0, so those volumes are
> nothing to worry about. For the sake of testing, I would recommend
> shutting down the machine, unplugging sdb, and rebooting. If
> everything seems to be in order (ie, there's no uses for /deb/md1 that
> I'm unable to see), then you should be good! Then, it's just a matter
> of reconfiguring the raid to not complain that sdb isn't present.
>
> On 8/30/07, Dan Roberts <Daniel.G.Roberts@sanofi-aventis.com> wrote:
>
> Hello All
> Thanks for the help!
> I am running fedora core>>
> [droberts@kayak /proc]$ uname -a ;
> Linux kayak 2.6.12-1.1381_FC3smp #1 SMP Fri Oct 21 04:03:26
> EDT 2005
> i686 i686 i386 GNU/Linux
>
> cat /proc/mdstat
>
> Personalities : [raid0] [raid1]
> md4 : active raid1 sdb2[1] sda2[0]
> 25599488 blocks [2/2] [UU]
>
> md2 : active raid1 sdb3[1] sda3[0]
> 5116608 blocks [2/2] [UU]
>
> md3 : active raid1 sdb5[1] sda5[0]
> 5116544 blocks [2/2] [UU]
>
> md1 : active raid0 sdb6[1] sda6[0]
> 8192896 blocks 64k chunks
>
> md5 : active raid1 sdb7[1] sda7[0]
> 29704064 blocks [2/2] [UU]
>
> md0 : active raid1 sdb1[1] sda1[0]
> 2048192 blocks [2/2] [UU]
>
> unused devices: <none>
> [droberts@kayak /proc]$
>
> So it seems that I am running a mix oF RAID0 and RAID1 on
> these two disk
> RAIDED sets..
>
>
> The following is how they are mounted on my system when in
> use..
> Filesystem Size Used Avail Use% Mounted on
> /dev/md0 2.0G 374M 1.5G 21% /
> /dev/md5 28G 33M 27G 1% /home2
> none 1004M 0 1004M 0% /dev/shm
> /dev/md3 4.9G 34M 4.6G 1% /tmp
> /dev/md4 25G 3.2G 20G 15% /usr
> /dev/md2 4.9G 190M 4.4G 5% /var
> /dev/sdc2 20G 9.8G 8.6G 54% /mnt
>
>
> What would you recommend I do at this point to detach sda from
> sdb so
> that I could use disk #2 while still having data preserved on
> disk#1?
> Remeber that I can still boot my system on disk#3 which isn't
> RAIDED to
> anyone..
> Thanks for any advice!
> Dan
>
>
>
> ___________________________________________________________________________
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> -- http://www.phillylinux.org
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> ___________________________________________________________________________
> Philadelphia Linux Users Group -- http://www.phillylinux.org
> Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
> General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug
___________________________________________________________________________
Philadelphia Linux Users Group -- http://www.phillylinux.org
Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce
General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug
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