Ted T'so on SSD and journalling

[der.hans]

moin moin,

The first paragraph in the quote was a comment on Ted's blog. The second
is Ted's response. Read the blog post at the URL given below.

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#  # 2  tytso  Says:
March 2nd, 2009 at 1:15 am

@1: I’d thought that the reason to avoid ext3 on SSDs, at least most of
the ones available today, was not the total number of writes but rather
the repeated writes to the same place on the disk (that is, the journal)

Norman,

Actually, even the most primitive SSD’s and Flash drives have to get this
right, because the Windows FAT filesystem are constantly updating the same
locations on disk (namely for the File Allocation Table), which is in a
fixed location on disk. So although there’s not a lot we can count on in
terms of the quality of flash drives’ wear level, it’s very likely they
get that right, since otherwise their reliability on basic FAT
filesystems, which are used in essentially every single digital camera on
the market, would be pretty bad.
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http://thunk.org/tytso/blog/2009/03/01/ssds-journaling-and-noatimerelatime/

ciao,

der.hans
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