On Friday, 27 March 2020 08:46:33 GMT Peter Humphrey wrote: > On Friday, 27 March 2020 05:34:58 GMT [email protected] wrote: > > hopefully in the next daus my first SSD drive will arrive > > (corona makes everything more difficult...). > > > > To prevent an "installed and works"-experience which ends > > a month later in a damaged or over-weared SSD with a drastically > > shortened lifetime, I want to ask here for own experiences: > > > > - What is the best filesustem to be used with a SSD, which > > > > will used for /root when it comes to prolong life of that > > SSD ? > > Ext4. I did try F2FS several years ago, but it caused loss of data. It may > be better now, but I wouldn't risk it as there's no need: these days SSDs > are quite happy with ext4.
There were some fs supposedly optimised for SSDs, but I haven't used any of them. I have used ext4 and btrfs. They both have worked as expected. Leave a little empty space when partitioning, for the drive's firmware to perform its wear leveling magic. > > - What options are recommended for the according mount command? > > Nothing special, just 'defaults,relatime' in my case, but put something like > this in root's crontab: > > 15 1,13 * * * /sbin/fstrim -a > > (I'm sure someone will correct me if that's no longer necessary.) Mounting with 'discard' option is an alternative, but only if the drive is written to rarely. For desktop usage a / partition is better trimmed with a simple cron job, or using a script to do it - like SSDcronTRIM, as mentioned here: https://wiki.gentoo.org/wiki/SSD#SSDcronTRIM Generally speaking, reducing write operations on the SSD is commensurate with a longer disk life, therefore many operations which perform frequent/ continuous writes are usually configured to be offloaded to RAM, or a spinning disk. However, many people leave swap on their SSD, apparently without any noticeable adverse effect. Failures are rare these days, but when they occur they are usually catastrophic - so backups are a necessity if you value your data. When/if smartctl reports a failure it is best to remove all data off the drive immediately, *before* you power it down. It is likely all data will be gone irretrievably after a reboot. In earlier years some SSDs were released with half-baked firmware and developed errors, lost data, etc. So it was advised to upgrade the firmware as soon as you bought the drive. I don't know if this still applies today, when the technology is more mature.
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