Re: Errors on SSD
On Sun, Aug 26, 2012 at 06:21:46PM +0200, Francois Tigeot wrote: > On Sun, Aug 26, 2012 at 02:47:54PM +0200, Sven Gaerner wrote: > > > > Thanks. Then my assumption was ok. The disk is dying, so I'll have some > > time left to move my data on a magnetic disk and will see how long the > > SSD will work as swapcache. > > > > Do you have a recommendation for SSDs? > > Intel and Crucial models are fine; some dragonflybsd.org servers use > Crucial M4 SSDs for swapcache. > > Some other brands may be ok too; having a look at reviews on e.g. newegg.com > should give you a good idea wrt current models. > > This web page has some return rate statistics: > http://www.behardware.com/articles/862-7/components-returns-rates-6.html > (OCZ numbers are exceptional *ahem*) > > -- > Francois Tigeot Thanks for the links and hints. The next SSD will hopefully work for a longer time. Sven
Re: Errors on SSD
Also note that you may be able to get more detailed information on the problem using smartctl: pkg_radd smartmontools smartctl -d sat -a /dev/daXXX (where daXXX is the correct device for the SSD). In particular look at the wear indicator, which is typically attribute 233, and available reserved space, which is typically attribute 232 (but it depends on the SSD). -Matt
Re: Errors on SSD
On Sun, Aug 26, 2012 at 02:47:54PM +0200, Sven Gaerner wrote: > > Thanks. Then my assumption was ok. The disk is dying, so I'll have some > time left to move my data on a magnetic disk and will see how long the > SSD will work as swapcache. > > Do you have a recommendation for SSDs? Intel and Crucial models are fine; some dragonflybsd.org servers use Crucial M4 SSDs for swapcache. Some other brands may be ok too; having a look at reviews on e.g. newegg.com should give you a good idea wrt current models. This web page has some return rate statistics: http://www.behardware.com/articles/862-7/components-returns-rates-6.html (OCZ numbers are exceptional *ahem*) -- Francois Tigeot
Re: Errors on SSD
On Sun, Aug 26, 2012 at 08:12:58AM +0200, Francois Tigeot wrote: > Hi, > > On Sat, Aug 25, 2012 at 11:03:42AM +0200, Sven Gaerner wrote: > > > > ahci0.2: Found DISK "OCZ-VERTEX2 1.29" serial="OCZ-CU25VMZ6117F3NFM" > > These messages report disk errors, your drive is dead or dying. > > OCZ has probably the worst failure rate of all SSD brands; I'll avoid > their products like the plague. > > -- > Francois Tigeot Thanks. Then my assumption was ok. The disk is dying, so I'll have some time left to move my data on a magnetic disk and will see how long the SSD will work as swapcache. Do you have a recommendation for SSDs? Sven
Re: Errors on SSD
Hi, On Sat, Aug 25, 2012 at 11:03:42AM +0200, Sven Gaerner wrote: > > I updated my system to the latest release version. The uname says: > 3.0-RELEASE DragonFly v3.0.3.1.g2c987-RELEASE. > > I guess it is not related to the kernel version, but I'm getting these > messages on the console. I didn't see them before. > > ahci0.2: TFES slot 21 ci_saved = 0020 > ahci0.2: disk_rw: error [...] > That device is an SSD. > > ahci0.2: Found DISK "OCZ-VERTEX2 1.29" serial="OCZ-CU25VMZ6117F3NFM" These messages report disk errors, your drive is dead or dying. OCZ has probably the worst failure rate of all SSD brands; I'll avoid their products like the plague. -- Francois Tigeot
