Hi Chris, > Gesendet: Dienstag, 30. März 2021 um 20:17 Uhr > Von: "Chris Murphy" <li...@colorremedies.com> > > On Tue, Mar 30, 2021 at 2:44 AM B A <chris....@web.de> wrote: > > > > > Gesendet: Dienstag, 30. März 2021 um 00:07 Uhr > > > Von: "Chris Murphy" <li...@colorremedies.com> > > > […] > > > EVO or PRO? And what does its /proc/mounts line look like? > > > > Model is MZ-7TD500, which seems to be an EVO. Firmware is DXT08B0Q. > > For me smartctl reports > Device Model: Samsung SSD 840 EVO 250GB > Firmware Version: EXT0DB6Q > > Yours might be a PRO or it could just be a different era EVO. Last I > checked, Samsung had no firmware updates on their website for the 840 > EVO. While I'm aware of some minor firmware bugs related to smartctl > testing, so far I've done well over 100 pull the power cord tests > while doing heavy writes (with Btrfs), and have never had a problem. > So I'd say there's probably not a "per se" problem with this model. > Best guess is that since the leaves pass checksum, it's not > corruption, but some SSD equivalent of a misdirected write (?) if > that's possible. It just looks like these two leaves are in the wrong > place.
I'd rather go with the theory you (indirectly) raised a few days ago that my RAM may misbehave (when you suggested I run memtest). This is rather possible because I had difficulties understanding my BIOS and at some point I have accidentally enabled some overclocking. As I know this may cause the RAM to misbehave (and I don't have ECC RAM), this may as well be the reason. > > > > Total_LBAs_Written? > > > > Raw value: > 92857573119 > > OK I'm at 33063832698 > > Well hopefully --repair will fix it (let us know either way) and if > not, then we'll see what Josef can come up with, or alternatively you > can just mkfs and restore from backups which will surely be faster. Sadly it didn't (see other e-mail) but I think I'll go for the latter (mkfs and restore from backups) as I *think* my backups are fine and I don't want to waste more of your time (unless Josef wants to get his changes tested). Thanks very much so far for the support and thanks for maintaining BTRFS :-) Kind regards, Chris