On Oct 22, 2011, at 12:55, Garrett D'Amore <garrett.dam...@nexenta.com> wrote:

> You're using an *old* version of both OpenSolaris and zpool.  There have been 
> a few corruption bugs fixed since then.  I'd recommend updating.
>    - Garrett
I was looking for the changelist to see if any have been fixed but couldnt find 
it. This is  2009.06 with some updates but not the final set.  It's just a 
fileserver so I was tempted to freeze the config since it's not on the net and 
it has been working so well (then again maybe not). Do you know if the final 
updates to 2009.06 can still be applied?


> On Oct 22, 2011, at 9:27 AM, Robert Watzlavick wrote:
>> I've noticed something strange over the past few months with four files on 
>> my raidz.  Here's the setup:
>> OpenSolaris snv_111b
>> ZFS Pool version 14
>> AMD-based server with ECC RAM.
>> 5 ST3500630AS 500 GB SATA drives (4 active plus spare) in raidz1
>> The other day, I observed what appears to be undetected file corruption in 4 
>> of the files on the raidz.  I have two external USB hard drives that I use 
>> to back up the contents of the ZFS raidz on alternating months.  The USB 
>> hard drives use EXT3 so they are connected to a Linux box which in turn 
>> connects to the raidz over NFS.  Occasionally, I use the checksum option on 
>> rsync (rsync -ainc) to make sure everything on the USB hard drives match 
>> before I perform the real rsync back from the raid to the USB disk and 
>> that's when I noticed the changes.  In each file, there was a single byte 
>> changed.  Running zpool status doesn't show any errors and running zpool 
>> scrub doesn't show any problems either.
>> One of the changed files was a .ppt file that I downloaded from the web over 
>> a year ago and the other 3 were Acronis incremental Backup files from my XP 
>> machine that get stored on the raidz.  Since ZFS files aren't supposed to be 
>> corrupted without notification (right?), I initially assumed the problem was 
>> with the USB drive.  For the 3 Acronis backup files, I had no way of knowing 
>> which version was the correct one because Acronis shows all of them to be 
>> valid.  The .ppt file was not on the web anymore but with the help of the 
>> Wayback machine, I was able to re-download it and that's when I confirmed 
>> the "good" copy from the web matches the copy on my USB hard drive, not the 
>> copy on the raidz.  I know I haven't modified the .ppt file because the date 
>> still matches the date I downloaded it, 2010-01-12.
>> What failure scenario could have caused this?  The file was obviously 
>> initially good on the raidz because it got backed up to the USB drive and 
>> that matches the "good" version from the web.
>> Thanks in advance,
>> -Bob
>> _______________________________________________
>> zfs-discuss mailing list
>> zfs-discuss@opensolaris.org
>> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
zfs-discuss mailing list

Reply via email to