There are some kernel patches that you need. Either way, the DSO
shouldn't be crashing, so I'll look into that.
Kernel patches are located at http://www.brassow.com/mirroring. Last
updated on April 3rd... I'll be updating those either today or tomorrow
as well.
brassow
On Apr 18, 2006, at 7:40 AM, Simone Gotti wrote:
Hi All,
I was curious to try the experimental dmeventd + the mirror checking
dso.
Everytime I created a mirror volume, dmeventd was crashing when the
mirror finished the syncing process.
I tracked it down to _get_mirror_event that is expeting a return string
from the status ioctl to dm like "2 253:4 253:5 400/400 1 AA 3 cluster
253:3 A" but it gets only "2 253:4 253:5 400/400" so it SIGSEGV when is
going to read over the number of returned arguments in the "args" array
from split_words.
The same string is returned by "dmsetup status".
Do these informations aren't already implemented in the ioctl, or are
there some patches around that I can try? (my kernel is the latest
available in fedora rawhide: 2.6.16-1.2131_FC6)
Another question, If I understand it correctly, the mirror library for
dmeventd will look to possible problems (eg the lost of a PV containing
a mirror), and it will call the right lvm command to fix it?
For example, if a PV containing a side of a 2 way mirrored volume is
lost, what are the various actions that it will do (I noticed an
lvreduce --removemissing, but my fear is that this command will also
remove unmirrored volumes)?
Thanks!
Bye!
Simone Gotti.
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