Re: I believe "mdadm --detail" is better than "mdadm --examine"
Orion Poplawski <[email protected]>
| Newsgroups | gmane.comp.log.logwatch.devel |
|---|---|
| Message-ID | <[email protected]> |
On 08/04/2014 05:32 AM, Göran Uddeborg wrote: > Hello, > > Since some time back, I get messages like these in the mdadm section > of my nightly logwatch mail. > > mdadm: cannot open /dev/md/1: No such file or directory > /dev/md/1 : > > Now I've got around to investigate what actually is wrong. And I > believe it is the use of the "mdadm" command in the services/mdadm > script. In the absence of any /etc/mdadm.conf file, it uses the > command "mdadm --examine --scan" to find all devices. > > The rules for naming of devices etc. in "mdadm" is not very obvious, > and not clearly explained in the manual pages as far as I can find. > So it took me a bit of googling. But if I understand things > correctly, the "--examine" flag investigates partitions that are used > to make up a raid device, and makes a guess at what they will be > named. In my case, this guess is wrong for one of my two RAID arrays. > > I believe we rather would want to use the flag "--detail". With that > flag, "mdadm" will report the names the arrays really got when > created. See for example this comment in a Red Hat Bugzilla which > seems to be about a very similar case to ours: > https://bugzilla.redhat.com/show_bug.cgi?id=827240#c2 > > So I would suggest to change the command in the script in this way. > Does this make sense? It already has been done in current svn. (We should really be doing more releases) -- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane [email protected] Boulder, CO 80301 http://www.nwra.com ------------------------------------------------------------------------------ Infragistics Professional Build stunning WinForms apps today! Reboot your WinForms applications with our WinForms controls. Build a bridge from your legacy apps to the future. http://pubads.g.doubleclick.net/gampad/clk?id=153845071&iu=/4140/ostg.clktrk