RAID/LVM Root Filesystem on SuSE8.2

[Matthew Carpenter]

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Speaking of "making the partitions equal or greater in size", I learned
a slick trick reading this article  (if everybody promises not to tell I
might scan the few pages and share) was the following line:

# sfdisk -d /dev/hdc | sfdisk /dev/hda

This is done once you've copied all the data from /dev/hda to the mirror
(which only lives on /dev/hdc), and takes /dev/hdc's partitioning scheme
and duplicates it to /dev/hda.  That's just slicker'n snot.



As for monitoring, which method of monitoring/notification do you use
for failed disks?


David Bandel wrote:
| On Wed, 9 Feb 2005 14:00:36 -0800, Bill Campbell

| Well, I might agree if I were talking about GRUB.  But with LILO's
| understanding of raid, it's no big deal.  In fact, I've already lost a
| Maxtor 80Gb hdd (Maxtor must be out to lunch, I've lost a bunch of
| their 80Gb hdds this past year) that contained both /boot and /root.
| Were it not for raid, I'd have lost the contents of both (it was a
| hard crash).  As it was, I removed hda, replaced with a Hitachi,
| reboot (the /boot was on hdc and /root on hde if I remember correctly,
| or maybe the reverse), partitioned remembering to make the partitions
| equal or greater in size, added the partitions and let mdadm rebuild
| all.  Down time (which happened a day after the crash) consisted of
| the time it took to shutdown, remove the hard drive and replace with a
| new one, then restart the system.  The system ran for a day after
| mdadm sent me a note telling me hda was a goner (actually it said md0
| and md2 were degraded).
|
| Ciao,
|
| David A. Bandel

- --
Matthew Carpenter
matt at eisgr.com                          http://www.eisgr.com/

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