SU+J Lost files after a power failure
feenberg at nber.org
Mon Oct 14 19:10:04 UTC 2013
On Mon, 14 Oct 2013, Bruce Cran wrote:
> On 10/14/2013 6:16 PM, CeDeROM wrote:
>> Isn't there Journal to prevent and reverse such damage?
> Unlike other journaling filesystems, UFS+J only protects the metadata, not
> the data itself - i.e. I think it ensures you won't have to run a manual
> fsck, but just like plain old UFS files may be truncated as the journal is
This discussion skirts the critical issue - are files that are not open
for writing endangered? No description of the uses of journaling can be
considered informative if it doesn't address that explicitly. As a naive
user I have always assumed that once closed, a file was invulnerable to
improper shutdowns, but this discussion shakes that belief.
I expect the answer may be different for SSD and spinning disks.
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