[Nottingham] FLASH vs HDD

[Michael Erskine]

On Wednesday 31 October 2007 13:25:05 Camilo Mesias wrote:
> > > And what is the best fs for flash?
> >
> > JFFS - there's limited write cycles to flash devices - try to avoid
> > destroying the device!
>
> Only if it's really a flash device (eg. /dev/mtd0). Flash usb drives
> already run wear levelling / error correction and emulate a block
> device on top of that - so FS designed for true flash are usually not
> appropriate.

Yeah, you'd think so wouldn't  you? However, the many flash devices we use in 
production generally have buggy drivers (e.g. TrueFFS on DiskOnChip2000 
devices). The best way to use flash devices is use them for your readonly 
filesystems and mount variable partitions e.g. /var, /tmp, etc. as ramdrives.

Michael.

-- 
nolo contendere:
	A legal term meaning: "I didn't do it, judge, and I'll never do
	it again."
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
Url : http://mailman.lug.org.uk/pipermail/nottingham/attachments/20071101/6692aa7a/attachment.bin