Hi everyone, Today I updated my laptop to use an ssd drive. I am using a Samsung 830 series (128 Gb) drive. I've got most things working nicely, but I had a few questions that others who have already done this may be able to assist with: 1. Hibernate has seemed to stop working for me ever since I installed the ssd. I'm fairly sure it worked with the old hard drive, but now if I pm-hibernate, and turn back on the machine, it is just equivalent of shutting down and booting. i.e. my session is not resumed, and I am asked to log in. I have a swap partition, output of free -m is: daniel@Vostro-3350:/tmp$ free -m total used free shared buffers cached Mem: 3947 659 3287 0 35 346 -/+ buffers/cache: 278 3669 Swap: 6143 0 6143 2. What tweaks do people use to prolong ssd life and also improve performance? Currently I have an fstab which looks like this: # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> # / was on /dev/sda2 during installation UUID=ed09c67d-bd34-42be-8f3b-3dfb567ea764 / ext4 errors=remount-ro,discard,noatime 0 0 UUID=9db7ef9e-5298-4400-8b26-cdf9d6ec4168 /home ext4 defaults,discard,noatime 0 0 # swap was on /dev/sda6 during installation UUID=3df92924-3bd3-4292-a635-a78e9e36d9c8 none swap sw 0 0 tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0 (obviously partition table has changed a bit since I moved from a dual booting system on the hdd to just ubuntu on ssd) I've also made a symbolic link from /var/log to /tmp/ which should apparently help reduce writing to the ssd. (apparently the last line of the fstab means /tmp is stored in ram) I've also added this in /etc/default/grub, and ran update-grub: GRUB_CMDLINE_LINUX="elevator=noop" Is there anything else I should do? 3. My last question: I here alignment is important to ensure best performance and again help prolong the life of the ssd.
From what I read using a multiple of 512 for the first block can achieve this. I attempted to do this with fdisk, but to be honest, was not quite sure what I was doing. (I actually just cp -ax /from/hdd* /to/path/ssd for my ubuntu installation, so didn't use the ubuntu install cd to install on the ssd. (so obviously created all partitions manually). Here is my fdisk output: daniel@Vostro-3350:/tmp$ sudo fdisk -l /dev/sda
Disk /dev/sda: 128.0 GB, 128035676160 bytes 255 heads, 63 sectors/track, 15566 cylinders, total 250069680 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x3f5f6184 Device Boot Start End Blocks Id System /dev/sda1 * 2048 31459327 15728640 83 Linux /dev/sda2 31459328 44042239 6291456 83 Linux /dev/sda3 44042240 250069679 103013720 83 Linux Are these partitions aligned? If not how can I repair this, (hopefully not by re-installing!) I'm running ubuntu 12.10 as well. Thanks in advance for any help, Dan