Re: help with 'discard' mount option on eMMC

2013-10-10 Thread Konstantin Dorfman
Hello, On 10/10/13 12:40, Prasanna NAVARATNA wrote: Hello, Could you please post kernel log of such failure? What hw are you using? I'm using sdhci controller. Hynix eMMC4.41. Linux Kernel 3.4.5 There are no kernel log failures as such. I need it to understand the flow. Also - how exactly reboo

Re: help with 'discard' mount option on eMMC

2013-10-10 Thread Prasanna NAVARATNA
> Hello, > Could you please post kernel log of such failure? > What hw are you using? I'm using sdhci controller. Hynix eMMC4.41. Linux Kernel 3.4.5 There are no kernel log failures as such. If i add print while sending CMD38 when 'discard' mount option is specified, then CMD38 with Arg 1 are con

Re: help with 'discard' mount option on eMMC

2013-10-10 Thread Konstantin Dorfman
Hello, Could you please post kernel log of such failure? What hw are you using? On 10/10/13 09:44, Prasanna NAVARATNA wrote: Hello, I'm using Hynix eMMC4.41 with Linux kernel 3.4.5. After mounting ext4 partition /userdata with 'discard' mount option enabled, fs triggers TRIM commands to eMMC a

help with 'discard' mount option on eMMC

2013-10-09 Thread Prasanna NAVARATNA
Hello, I'm using Hynix eMMC4.41 with Linux kernel 3.4.5. After mounting ext4 partition /userdata with 'discard' mount option enabled, fs triggers TRIM commands to eMMC after every file deletion. With this setup, for a continuous reboot test (5s awake and issue reboot and repeat) with 10 or 20 ite