From ext3 to ext4: An Interview with Theodore Ts'o (Linux Magazine)
From ext3 to ext4: An Interview with Theodore Ts'o (Linux Magazine)
Posted Mar 31, 2009 6:41 UTC (Tue) by nix (subscriber, #2304)In reply to: From ext3 to ext4: An Interview with Theodore Ts'o (Linux Magazine) by bojan
Parent article: From ext3 to ext4: An Interview with Theodore Ts'o (Linux Magazine)
cards. 256Mb+ of battery-backed cache RAM. Barriers? Data loss on power
failure? That's *so* last century.
(And combine it with fs-cache and running everything else over NFS, and
you get the storage reliability of RAID and read speeds almost
local-disk-equivalent. Only writes and metadata reads are down, and I
assume that in time the latter in particular will be cacheable too.)
Posted Mar 31, 2009 7:45 UTC (Tue)
by khim (subscriber, #9252)
[Link] (1 responses)
The whole discission started with software crash (nVidia drivers are
very helpful here). I fail to see how these "new century" toys can help
against this.
Posted Apr 3, 2009 13:55 UTC (Fri)
by anton (subscriber, #25547)
[Link]
Power failure was not even in the picture before your rant
A software crash is less severe than a power failure, because file
systems that don't use barriers properly (e.g., ext3 by default) will
see all their writes come through to the disk drive, but on a power
failure some writes may not have been carried out, whereas some
logically later writes may have been carried out. As a result, such a
file system can become inconsistent on power failure even if it does
not get inconsistent on a software crash.
Power failure was not even in the picture before your rant