On Sun, Sep 25, 2005 at 03:14:23PM +0200, Patrick Ale wrote: > Hi All, Hi Patrick. > > I tried the dmraid tool on my Silicon Image raidcontroler and was able to > query the metadata. > The metadata shown is correct for the logical volume. > > lilith:/home/patrick# dmraid -r > /dev/hdi: sil, "sil_afajdfddahad", stripe, ok, 390718720 sectors, data@ 0 > /dev/hdk: sil, "sil_afajdfddahad", stripe, ok, 390718720 sectors, data@ 0 > lilith:/home/patrick# dmraid -s > *** Active Set > name : sil_afajdfddahad > size : 781437440 > stride : 256 > type : stripe > status : ok > subsets: 0 > devs : 2 > spares : 0 Alright :-) > > > > Some funny things occure tho: > > - After an fdisk I have to reboot to reload the partition table. My guess is > that this has to do with not calling the hardware directly but using the > devmapper. Yes, you need to rerun "dmraid -an;dmraid -ay" in order to activate mappings for any changed/new partitions. Of course no partitions should be active while changing them. > - After an fsck 'df -hP' claims that 129MB is used. My question is; by what? > It's an empty partition with just the lost+found directory. If you're refering to an empty filesystem (ie, your one mounted on /storage/sil-set0), that's filesystem metadata. Filesystem need to store things like bitmaps, inode tables and group descriptors which consume space even you haven't stored any files on the filesystem yet. > > I also keep a log of my dmraid test activities and other stuff related to > dmraid on my website: http://lilith.cathedrallabs.org/dmraid/ Naming got done this way in order to keep it unique in case you've got multiple RAID controllers on a system (which is your case). The names are persistant as well, which prevents you from nasty name changes leading to eg, filesystems mounted on different mountpoints after a reboot. There's of course the option to symlink eg, /dev/mapper/sil* names to /dev/ataraid/ entries. > > Another question I have: The ChangeLog et all mention that LSI Logic's > Megaraid is supported. Does this also include the Megaraid used in Dell > poweredges and HP DL380s? Tell me ;-) Presumably the RAID metadata hasn't changed on those: yes. > If the answer is yes to this question then I should be able to help out > testing and trying things for this part aswell. Please do. > > > With kind regards, Patrick > _______________________________________________ > > Ataraid-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/ataraid-list -- Regards, Heinz -- The LVM Guy -- =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Heinz Mauelshagen Red Hat GmbH Consulting Development Engineer Am Sonnenhang 11 Cluster and Storage Development 56242 Marienrachdorf Germany Mauelshagen@xxxxxxxxxx +49 2626 141200 FAX 924446 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- _______________________________________________ Ataraid-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ataraid-list
