Re: rfc: fuzz testing by direct writes to device

2012-09-05 Thread Shentino
On Wed, Sep 5, 2012 at 8:04 AM, David Sterba d...@jikos.cz wrote: On Sun, Sep 02, 2012 at 04:43:48AM -0700, Shentino wrote: I assume the same results are expected during a scrub as during a normal read? yes I've tested this on an 2 disk data/raid1, metadata/raid1 with a running dd over

Re: rfc: fuzz testing by direct writes to device

2012-09-04 Thread Shentino
On Tue, Sep 4, 2012 at 11:15 AM, Goffredo Baroncelli kreij...@libero.it wrote: Hi, On 09/02/2012 03:03 AM, Shentino wrote: This whole subject was also about using sed to corrupt-o-magic a file's data on disk. Is this an acceptable method for testing? I am not sure that doing sed /dev

Re: rfc: fuzz testing by direct writes to device

2012-09-02 Thread Shentino
On Sat, Sep 1, 2012 at 10:44 PM, David Sterba d...@jikos.cz wrote: On Sat, Sep 01, 2012 at 06:03:32PM -0700, Shentino wrote: This whole subject was also about using sed to corrupt-o-magic a file's data on disk. Is this an acceptable method for testing? Starting with kernels 3.4 the error

rfc: fuzz testing by direct writes to device

2012-09-01 Thread Shentino
How effective would it be to directly write to the underlying device and then running tests to see if the corruption is properly detected? I just ran a fuzz test by syncing, and then manually corrupting a file with the help of a surgical sed (yes, the before and after patterns had fixed equal

Re: rfc: fuzz testing by direct writes to device

2012-09-01 Thread Shentino
Also, since the problem prevented me from syncing my other filesystmes I couldn't capture the debug info. It vanished during the cold boot still sitting in dirty page cache. On Fri, Aug 31, 2012 at 11:44 PM, Shentino shent...@gmail.com wrote: How effective would it be to directly write

Re: rfc: fuzz testing by direct writes to device

2012-09-01 Thread Shentino
On Sat, Sep 1, 2012 at 1:59 PM, cwillu cwi...@cwillu.com wrote: You still haven't said which kernel you were running; the thing to do is try the very latest rc (if not btrfs-next). Sorry about that! I thought I included it. 3.3.8 Hmm...seems it's been EOL'ed. I need to yell at my distro.

Re: rfc: fuzz testing by direct writes to device

2012-09-01 Thread Shentino
. On Sat, Sep 1, 2012 at 5:31 PM, Shentino shent...@gmail.com wrote: On Sat, Sep 1, 2012 at 1:59 PM, cwillu cwi...@cwillu.com wrote: You still haven't said which kernel you were running; the thing to do is try the very latest rc (if not btrfs-next). Sorry about that! I thought I included

comparison

2009-03-21 Thread Shentino
Just a potential user of btrfs, being an ubuntu fan. Curious of a few things and I figured that hearing from the horse's mouth would be a good idea. * How does btrfs compare against ext4? * How stable is it? * How's performance and integrity? -- To unsubscribe from this list: send the line