Hi Lennart: Thanks, also for suggesting Knoppix. I have the CD, I know that it can be used for repair, when I traveled much in the South Seas, particularly in New Caledonia, I had a portable HDD with Knowppix and my data, and on one computer or another, I was able to have Linux where Linux was unknown, Now I forgot about.
Thanks also to the Anonymous who pointed me that I was imagining non-existent problems, and of course, to Alex. Next time I setup a raid1, I'll pay attention to his indications that I missed from the Debian instructions. When "top -i" showed all 8 instances fo the parallel procedure md6_resync (CPU% 6) md5_resync (CPU% 0) kjournald I was confident that "repair" was occurring, and, in fact, "resync" disappeared after a while. Everything looked like in order and I misinterpreted "fdisk -l". Sorry for much rumor for nothing. francesco On Wed, Oct 29, 2008 at 5:07 PM, C M Reinehr <[EMAIL PROTECTED]> wrote: > Francesco, > > On Wed 29 October 2008 06:16, Francesco Pietra wrote: >> 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. > > I'm not clear as to exactly what your problem is, but here are some thoughts. > > First, Knoppix is your friend. In a case like this, where you are not sure of > your file system integrity, I would boot from a Knoppix CD and then examine & > repair each file system as necessary. > > WRT the supposedly missing partition tables, I don't think that they are > missing, as they never were there in the first place. Your partition tables > for your two actual drives are in place. When I run `fdisk -l` here, I get > similar results as you. (I have two hard drives with two raid-1 arrays > defined.) The md devices do not have partition tables. > > WRT /opt, there is no entry in /etc/fstab for /opt, so I can only conclude > that it is not mounted on a seperate file system, but is a part of the root > file system. > > HTH! > > cmr > > PS I agree with Alex regarding LVM2. I have only two partitions defined > on my > hard drives, one each for two md arrays. The first md device is for my boot > partition. The second for everything else. The everything else, then, is > managed by LVM2 with logical volumes for each seperate file system. LVM2 is a > little intimidating but once up & running is much easier to manage. > > -- > Debian 'Etch' - Registered Linux User #241964 > -------- > "More laws, less justice." -- Marcus Tullius Ciceroca, 42 BC > > > -- > 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]
