On Wed, Oct 29, 2008 at 11:40 AM, Alex Samad <[EMAIL PROTECTED]> wrote: > On Wed, Oct 29, 2008 at 08:24:55AM +0100, Francesco Pietra wrote: >> On Wed, Oct 29, 2008 at 7:06 AM, Douglas A. Tutty <[EMAIL PROTECTED]> wrote: >> > On Wed, Oct 29, 2008 at 05:44:31AM +0100, Francesco Pietra wrote: > > [snip] > >> >> "cat /proc/mdstat: >> Personalities : [raid1] >> md6 : active raid1 sda8[0] sdb8[1] >> 102341952 blocks [2/2] [UU] >> >> md5 : active raid1 sda7[0] sdb7[1] >> 1951744 blocks [2/2] [UU] >> >> md4 : active raid1 sda6[0] sdb6[1] >> 2931712 blocks [2/2] [UU] >> >> md3 : active raid1 sda5[0] sdb5[1] >> 14651136 blocks [2/2] [UU] >> >> md1 : active(auto-read-only) raid1 sda2[0] sdb2[1] >> 6835584 blocks [2/2] [UU] >> >> md0 : active raid1 sda1[0] sdb1[1] >> 2931712 blocks [2/2] [UU] >> >> md2 : active raid1 sda3[0] sdb3[1] >> 14651200 blocks [2/2] [UU] >> > > This is off topic but, just a comment, it might be better instead of > having lots of md's to have a big md raid1 and then sit lvm on top of it
I am no system maintainer. I set up a raid1 according to the installation notes on Debian, I believe. At any event, this is the present situation. I must confess that a raid1 becomes dirty on power failure, although I expected that it works on one disk failure (as it happened to me once). Well, what about the following recipe that I found on internet? Could that be applied in my case as described? Thenks, francesco: 1. shutdown all processes and databases using the array. lsof /dev/md0 is your friend. 2. Full backup, in addition to the usual nightly ones. 3. Stop the array mdadm -S /dev/md0 4. Added the drive back into the array. In this case, mdadm /dev/md0 --add /dev/sdb1 5. Sit back and watch progress, watch -n 1 cat /proc/mdstat 6. Restart, dmesg says raid1: device sdc1 operational as mirror 1 raid1: device sdb1 operational as mirror 0 raid1: raid set md0 active with 2 out of 2 mirrors md: ... autorun DONE. ============================================ > > > [snip] > >> Thanks >> francesco >> > >> > If so, you can write it back. >> > >> > Doug. >> > >> > >> > -- >> > To UNSUBSCRIBE, email to [EMAIL PROTECTED] >> > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] >> > >> > >> >> >> -- >> To UNSUBSCRIBE, email to [EMAIL PROTECTED] >> with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] >> >> > > -- > "I'm thrilled to be here in the bread basket of America because it gives me a > chance to remind our fellow citizens that we have an advantage here in > America -- we can feed ourselves." > > - George W. Bush > 08/23/2002 > Stockton, CA > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (GNU/Linux) > > iEYEARECAAYFAkkIPboACgkQkZz88chpJ2PBFQCgl4+OK7ZIigakH0NEA1xUlDtp > qq8AoIqn0gS9axLCOZ03OoZ1w5qYSuIL > =Oa83 > -----END PGP SIGNATURE----- > > -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
