On Fri, 2012-11-02 at 14:38 +0800, Zhi Yong Wu wrote: > Here also has another question. > > How to save the file temperature among the umount to be able to > preserve the file tempreture after reboot? > > This above is the requirement from DB product. > I thought that we can save file temperature in its inode struct, that > is, add one new field in struct inode, then this info will be written > to disk with inode. > > Any comments or ideas are appreciated, thanks. > > Maybe could save the last file temperature with extended attributes. Just save the per-inode temperature only for now. Mingming > On Fri, Nov 2, 2012 at 12:04 PM, Zhi Yong Wu <zwu.kernel@xxxxxxxxx> wrote: > > HI, guys > > > > VFS hot tracking currently show result as below, and it is very > > strange and not nice. > > > > inode #279, reads 0, writes 1, avg read time 18446744073709551615, > > avg write time 5251566408153596, temp 109 > > > > Do anyone know if there is one simpler but effective way to calculate > > data temperature? > > > > -- > > Regards, > > > > Zhi Yong Wu > > > -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
