On Tue, Nov 19, 2013 at 09:02:41AM +0100, Stefan Priebe wrote: ... > >You might be able to vary this behavior by experimenting with sdparm, > >smartctl or other tools, or possibly with different microcode in the drive. > Which values or which settings do you think of? ... Off-hand, I don't know. Probably the first thing would be to compare the configuration of your 520 & 530; anything that's different is certainly worth investigating. This should display all pages, sdparm --all --long /dev/sdX the 520 only appears to have 3 pages, which can be fetched directly w/ sdparm --page=ca --long /dev/sdX sdparm --page=co --long /dev/sdX sdparm --page=rw --long /dev/sdX The sample machine I'm looking has an intel 520, and on ours, most options show as 0 except for AWRE 1 [cha: n, def: 1] Automatic write reallocation enabled WCE 1 [cha: y, def: 1] Write cache enable DRA 1 [cha: n, def: 1] Disable read ahead GLTSD 1 [cha: n, def: 1] Global logging target save disable BTP -1 [cha: n, def: -1] Busy timeout period (100us) ESTCT 30 [cha: n, def: 30] Extended self test completion time (sec) Perhaps that's an interesting data point to compare with yours. Figuring out if you have up-to-date intel firmware appears to require burning and running an iso image from https://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&DwnldID=18455 The results of sdparm --page=<whatever> --long /dev/sdc show the intel firmware, but this labels it better: smartctl -i /dev/sdc Our 520 has firmware "400i" loaded. -Marcus Watts -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
