>>> Rahsaan Page <rahsaan.page@xxxxxxxxx> schrieb am 22.10.2010 um 14:46 in Nachricht <AANLkTineg_wHmd_es91=aGpr-bRLBp=xNikiO7i8MWBV@xxxxxxxxxxxxxx>: > Hi Ulrich, > > I dont think thats going to work, arent you suppose to create the raid with > xdisk, than create LVM on top of the raid? Hi! I never heard of "xdisk". Also I decided to use MD for RAID, and not LVM, because the Linux implementation needs a third device to handle the mirror log, while MD can host a bitmap on the members itself. In my setup I'd partition the MD-device, then create an LVM physical volume in one of the partitions... Regards, Ulrich > > On Thu, Oct 21, 2010 at 7:16 AM, Ulrich Windl < > Ulrich.Windl@xxxxxxxxxxxxxxxxxxxx> wrote: > > > Hi, > > > > not an iSCSI question, but maybe here's the right audience: I had > > sucessfully created a RAID1 using mdadm, multipath, iSCSI and some SAN > > storage on SLES10 SP3+Updates on x86_64. When I tried to do the same thing > > on a comparable machine, the RAID could not be created, because something > > tried to access the disk at a bad position. I reapeated the attempt with > > another set of disks of the same size, and it also failed. > > > > Details: > > # mdadm --verbose --create /dev/md5 --raid-devices=2 --level=raid1 > > --bitmap=internal --assume-clean /dev/mapper/EVA1_L232_host05 > > /dev/mapper/EVA2_L232_host05 > > mdadm: /dev/mapper/EVA1_L232_host05 appears to be part of a raid array: > > level=raid1 devices=2 ctime=Thu Oct 21 12:26:18 2010 > > mdadm: /dev/mapper/EVA2_L232_host05 appears to be part of a raid array: > > level=raid1 devices=2 ctime=Thu Oct 21 12:26:18 2010 > > mdadm: size set to 31457216K > > Continue creating array? y > > mdadm: RUN_ARRAY failed: Input/output error > > mdadm: stopped /dev/md5 > > hostname:~ # tail -24 /var/log/messages > > Oct 21 12:28:05 hostname kernel: md: md5 stopped. > > Oct 21 12:28:07 hostname kernel: md: md5 stopped. > > Oct 21 12:29:46 hostname kernel: md: bind<dm-21> > > Oct 21 12:29:46 hostname kernel: md: bind<dm-14> > > Oct 21 12:29:46 hostname kernel: raid1: raid set md5 active with 2 out of 2 > > mirrors > > Oct 21 12:29:46 hostname kernel: md5: bitmap file is out of date (0 < 1) -- > > forcing full recovery > > Oct 21 12:29:46 hostname kernel: md5: bitmap file is out of date, doing > > full recovery > > Oct 21 12:29:46 hostname kernel: attempt to access beyond end of device > > Oct 21 12:29:46 hostname kernel: dm-14: rw=8, want=62914568, limit=62914560 > > Oct 21 12:29:46 hostname kernel: attempt to access beyond end of device > > Oct 21 12:29:46 hostname kernel: dm-21: rw=8, want=62914568, limit=62914560 > > Oct 21 12:29:46 hostname kernel: md5: bitmap initialized from disk: read > > 15/16 pages, set 489472 bits, status: -5 > > Oct 21 12:29:46 hostname kernel: md5: failed to create bitmap (-5) > > Oct 21 12:29:46 hostname kernel: md: pers->run() failed ... > > Oct 21 12:29:46 hostname kernel: md: md5 stopped. > > Oct 21 12:29:46 hostname kernel: md: unbind<dm-14> > > Oct 21 12:29:46 hostname kernel: md: export_rdev(dm-14) > > Oct 21 12:29:46 hostname kernel: md: unbind<dm-21> > > Oct 21 12:29:46 hostname kernel: md: export_rdev(dm-21) > > > > hostname:~ # mdadm --query -X /dev/mapper/EVA2_L232_host05 > > mdadm: WARNING: bitmap file is not large enough for array size 62914432! > > > > Filename : /dev/mapper/EVA2_L232_host05 > > Magic : 6d746962 > > Version : 4 > > UUID : c522ab5a:24f292a0:0b3d7356:64ade12a > > Events : 0 > > Events Cleared : 0 > > State : Out of date > > Chunksize : 64 KB > > Daemon : 5s flush period > > Write Mode : Normal > > Sync Size : 31457216 (30.00 GiB 32.21 GB) > > Bitmap : 489472 bits (chunks), 489472 dirty (100.0%) > > hostname:~ # mdadm --query -X /dev/mapper/EVA1_L232_host05 > > mdadm: WARNING: bitmap file is not large enough for array size 62914432! > > > > Filename : /dev/mapper/EVA1_L232_host05 > > Magic : 6d746962 > > Version : 4 > > UUID : c522ab5a:24f292a0:0b3d7356:64ade12a > > Events : 0 > > Events Cleared : 0 > > State : Out of date > > Chunksize : 64 KB > > Daemon : 5s flush period > > Write Mode : Normal > > Sync Size : 31457216 (30.00 GiB 32.21 GB) > > Bitmap : 489472 bits (chunks), 489472 dirty (100.0%) > > > > "blockdev --getsize" reports "62914560" for each LUN being used. > > > > Regards, > > Ulrich > > > > > > -- > > You received this message because you are subscribed to the Google Groups > > "open-iscsi" group. > > To post to this group, send email to open-iscsi@xxxxxxxxxxxxxxxxx > > To unsubscribe from this group, send email to > > > open-iscsi+unsubscribe@xxxxxxxxxxxxxxxx<open-iscsi%2Bunsubscribe@xxxxxxxxxxxxxx >om> > > . > > For more options, visit this group at > > http://groups.google.com/group/open-iscsi?hl=en. > > > > > -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
