Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
So, we have a MySQL server which uses a software Raid setup. The Setup is as follows: /dev/sda2 and /dev/sdb2 are software Raid device /dev/md2 /dev/md2 is formatted as a LVM volume named /dev/mysqlVG/DRBDmySQL /dev/mysqlVG/DRBDmySQL is the DRBD block device. /dev/drbd0 is formatted with ext4 and mounted as /var/lib/mysql /dev/sda and /dev/sdb are two Intel Server SSDs, each 80GB in size. Our DRBD setup is primary/secondary using protocol A So my question is, since the actual Harddrives are SSDs, are there any special options I would have to use, considering that I'm using SSDs for this purpose. The DRBD block device is mounted as ext4 with the discard option. But will the fact that these are SSDs, translate through all the layers? DRBD, LVM, SWraid? Drbd is supposedly SSD aware, but does that still work when drbd is not directly formatted onto /dev/sda or /dev/sdb?