Hi, just some notes about the current state migrating to an SSD for the system.
I installed the SSD, created a GPT partition on it that contains the following layout. a: 1 GB UFS b: 40 GB swap d: 8 GB HAMMER e: 10 GB unused Currently only swap is used by swapcache. That indeed speed up things like tab-completion, searching for files and build pkgsrc a lot. But I did not run an benchmarks or speed comparison tests. UFS should contain /boot and the rest of the system (/usr and /var) will go on the HAMMER filesystem. Any PFSs that are heavily modified will stay on another HDD. Before using the SSD for the system I tried migrating the system from an older and smaller HDD to a bigger one. I used the following steps, that are also described in [1] and the gpt man page. * partition the new disk * use cpdup to copy / * remove any links in /pfs via rm * run "hammer mirror-copy /olddisk/pfs/usr /newdisk/pfs/usr" to mirror /usr * do the same for var, var.tmp, ... * adjust HAMMER configuration of usr.obj, var.tmp, tmp by running "hammer viconfig /pfs/usr.obj" and set snapshots to "0d 0d" to disable them completely * adjust /etc/fstab (mainly change the serial number of the disk :)) * run boot0cfg to make the new disk bootable That's all to copy the system. Most of the time is waiting for the mirror-copy command to finish. Sven [1] http://www.dragonflybsd.org/docs/howtos/howto_reinstall_hammer/
