jffs2_get_inode_nodes() very very slow

[Artem B. Bityuckiy]

On Tue, 1 Feb 2005, Rudi Engelbertink wrote:

> Hello,
> 
> On a 64 MiB NAND Flash I created a jffs2 file system. After several tests
> especially power fail tests resulting in a lot off CRC and Data CRC errors.
How do you do your power-fail tests?

> This appears not to be a problem except it takes a very long time to check
> the file system.
> The initial check (scanning for erased blocks) is done in aproximatly 10
> seconds, but after that the jffs2_get_inode_nodes check is running. 
> This process takes up to 8 minutes.
Do you mean this happens every time or in case of "powerfails"?

> During this time the file-system is inaccessible which in oure case a
> watchdog decides to reboot the system, making it even worse.
> It appears that the check is done with a stepsize of 16 bytes. On an 64MiB
> NAND flash it does this check +/- 4 million times.
That's strange. JFFS2 should share processor's cycles.

> 
> Is there a way to reduce the time to check the file-system and/or how 
> can I recover from these errors.
> 
> Kind Regards,
> Rudi.
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--
Best Regards,
Artem B. Bityuckiy,
St.-Petersburg, Russia.