Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi,
[drbd-0.6.10, Fedora Core release 1, 2 node]
As I was beginning to create my drbd.conf, using the
/usr/share/doc/drbd-0.6.10/drbd.conf example, I read the following comment:
# btw, don't do this.
# did you notice that in this example we have two drbd devices
# on the same spindle (hda)? performance will be bad. if you
# use several drbd devices, put them on different spindles;
# different channels/controllers won't be a bad idea for IDE.
I have a raid box [Promise RM8K, RAID 5, ~750GB, SCSI], which presents itself
as one disk, AKA spindle, and I wanted to know if the above note was mainly
for [IDE|single physical spindle] or if it also badly affects RAID boxes
presenting as one disk?
Is this because DRBD/EXT3 makes some assumptions about stacking up writes that
are not true when presented with multiple partitions, or just that the seek
times get amplified badly with drbd in protocol=C?
I wanted to split the space up into partitions such that business functions
[cvs & project storage] would be less troubled by disk hogs home directories.
can or is it wise, to have drbd mirror the whole device sda and have
partitions in it?
--
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane)
Harnessing the Power of Technology for the Warfighter