On Friday 07 October 2011 01:41:45 Holger Parplies wrote:
Hi,
Les Mikesell wrote on 2011-10-06 18:17:06 -0500 [Re: [BackupPC-users] Bad
md5sums due to zero size (uncompressed) cpool files - WEIRD BUG]:
On Thu, Oct 6, 2011 at 5:21 PM, Arnold Krille arn...@arnoldarts.de
wrote
On Thu, 2011-10-06 at 17:54 +0200, Holger Parplies wrote:
To be honest, I would *hope* that only you had these issues and everyone
else's backups are fine, i.e. that your hardware and not the BackupPC software
was the trigger (though it would probably need some sort of software bug to
come up
Hi,
Tim Fletcher wrote on 2011-10-07 10:21:29 +0100 [Re: [BackupPC-users] Bad
md5sums due to zero size (uncompressed) cpool files - WEIRD BUG]:
[...]
Another system is currently up to a/f/d of a full scan and has found the
following errors
tim@carbon:~$ grep -v ok /tmp/pool-check.txt
Hi,
Jeffrey J. Kosowsky wrote on 2011-10-07 01:08:03 -0400 [Re: [BackupPC-users]
Bad md5sums due to zero size (uncompressed) cpool files - WEIRD BUG]:
Holger Parplies wrote at about 05:46:36 +0200 on Friday, October 7, 2011:
Jeffrey J. Kosowsky wrote on 2011-10-06 22:54:44 -0400 [Re
On Fri, 2011-10-07 at 10:21 +0100, Tim Fletcher wrote:
Another system is currently up to a/f/d of a full scan and has found the
following errors
The final answer off the server with the larger and older install of
backuppc is:
2836949 files in 4096 directories checked, 13 had wrong digests,
On Wed, 2011-10-05 at 21:35 -0400, Jeffrey J. Kosowsky wrote:
Finally, remember it's possible that many people are having this
problem but just don't know it, since the only way one would know
would be if one actually computed the partial file md5sums of all the
pool files and/or restored
Tim Fletcher t...@night-shade.org.uk wrote on 10/06/2011 05:17:03 AM:
Do you have a script or series of commands to do this check with?
I have access to a couple of backuppc installs of various ages and sizes
that I can test.
Me too, if it can run in a reasonable amount of time. I'd hate
Hi,
Tim Fletcher wrote on 2011-10-06 10:17:03 +0100 [Re: [BackupPC-users] Bad
md5sums due to zero size (uncompressed) cpool files - WEIRD BUG]:
On Wed, 2011-10-05 at 21:35 -0400, Jeffrey J. Kosowsky wrote:
Finally, remember it's possible that many people are having this
problem but just
Holger Parplies wb...@parplies.de wrote on 10/06/2011 11:54:05 AM:
If you have switched off compression,
you'll have to add a '-u' (though I'm not sure this test makes much
sense in
that case).
Well, then, it won't make much sense in *my* case: I missed that this is
unique to compressed
On Thu, Oct 6, 2011 at 11:56 AM, Timothy J Massey tmas...@obscorp.comwrote:
Personally, I feel that compression has no place in backups. Back when we
were highly limited in capacity by terrible analog devices (i.e. tape!) I
used it from necessity. Now, I just throw bigger hard drives at it
Les Mikesell lesmikes...@gmail.com wrote on 10/06/2011 01:21:29 PM:
On Thu, Oct 6, 2011 at 11:56 AM, Timothy J Massey tmas...@obscorp.com
wrote:
Personally, I feel that compression has no place in backups. Back
when we were highly limited in capacity by terrible analog devices
(i.e.
On Thu, Oct 6, 2011 at 1:04 PM, Timothy J Massey tmas...@obscorp.comwrote:
On Thu, Oct 6, 2011 at 11:56 AM, Timothy J Massey tmas...@obscorp.com
wrote:
Personally, I feel that compression has no place in backups. Back
when we were highly limited in capacity by terrible analog devices
On Thursday 06 October 2011 20:04:57 Timothy J Massey wrote:
Les Mikesell lesmikes...@gmail.com wrote on 10/06/2011 01:21:29 PM:
On Thu, Oct 6, 2011 at 11:56 AM, Timothy J Massey tmas...@obscorp.com
wrote:
Personally, I feel that compression has no place in backups. Back
when we were
Hi,
Les Mikesell wrote on 2011-10-06 13:42:09 -0500 [Re: [BackupPC-users] Bad
md5sums due to zero size (uncompressed) cpool files - WEIRD BUG]:
On Thu, Oct 6, 2011 at 1:04 PM, Timothy J Massey tmas...@obscorp.comwrote:
No, the point of backup is to be able to *restore* as much historical
Hi,
Timothy J Massey wrote on 2011-10-06 12:56:42 -0400 [Re: [BackupPC-users] Bad
md5sums due to zero size (uncompressed)?cpool files - WEIRD BUG]:
Holger Parplies wrote on 10/06/2011 11:54:05 AM:
If you have switched off compression, you'll have to add a '-u' (though
I'm not sure
On Thu, Oct 6, 2011 at 5:21 PM, Arnold Krille arn...@arnoldarts.de wrote:
No, it makes perfect sense for backuppc where the point is to keep
as much history as possible online in a given space.
No, the point of backup is to be able to *restore* as much historical data
as possible. Keeping
On Thu, Oct 6, 2011 at 5:42 PM, Holger Parplies wb...@parplies.de wrote:
[...]
With compressible data you increase both capacity and reliability by
compressing before storage. There's no magical difference between the
reliability of 'cat' vs 'zcat'. Either one could fail.
the problem, I
Holger Parplies wrote at about 17:54:05 +0200 on Thursday, October 6, 2011:
Hi,
Tim Fletcher wrote on 2011-10-06 10:17:03 +0100 [Re: [BackupPC-users] Bad
md5sums due to zero size (uncompressed) cpool files - WEIRD BUG]:
On Wed, 2011-10-05 at 21:35 -0400, Jeffrey J. Kosowsky wrote
Hi,
Les Mikesell wrote on 2011-10-06 18:17:06 -0500 [Re: [BackupPC-users] Bad
md5sums due to zero size (uncompressed) cpool files - WEIRD BUG]:
On Thu, Oct 6, 2011 at 5:21 PM, Arnold Krille arn...@arnoldarts.de wrote:
No, it makes perfect sense for backuppc where the point is to keep
On Thu, Oct 06, 2011 at 05:54:05PM +0200, Holger Parplies wrote:
Try something like
BackupPC_verifyPool -s -p
to scan the whole pool, or
BackupPC_verifyPool -s -p -r 0
to test it on the 0/0/0 - 0/0/f pool subdirectories (-r takes a Perl
expression evaluating to an array
Hi,
Jeffrey J. Kosowsky wrote on 2011-10-06 19:28:38 -0400 [Re: [BackupPC-users]
Bad md5sums due to zero size (uncompressed)?cpool files - WEIRD BUG]:
Holger Parplies wrote at about 17:54:05 +0200 on Thursday, October 6, 2011:
[...]
Actually, what I would propose [...] would be to
test
Holger Parplies wb...@parplies.de wrote on 10/06/2011 06:58:06 PM:
Don't you feel uncomfortable about deduplication, too, then? After all,
it
introduces a single point of failure for common data.
No. Dedupe is merely a side effect of a filesystem. Dedupe errors are no
different than any of
On Thu, Oct 6, 2011 at 8:06 PM, Timothy J Massey tmas...@obscorp.comwrote:
Redundancy is a good thing.
(While we're on the subject, I've considered Les' argument that compressed
files take less space on the disk and are therefore less likely to be
corrupted before. It's true, but like
Holger Parplies wrote at about 02:45:56 +0200 on Friday, October 7, 2011:
Hi,
Jeffrey J. Kosowsky wrote on 2011-10-06 19:28:38 -0400 [Re: [BackupPC-users]
Bad md5sums due to zero size (uncompressed)?cpool files - WEIRD BUG]:
Holger Parplies wrote at about 17:54:05 +0200 on Thursday
Hi,
Jeffrey J. Kosowsky wrote on 2011-10-06 22:09:52 -0400 [Re: [BackupPC-users]
Bad md5sums due to zero size (uncompressed) cpool files - WEIRD BUG]:
Holger Parplies wrote at about 02:45:56 +0200 on Friday, October 7, 2011:
Jeffrey J. Kosowsky wrote on 2011-10-06 19:28:38 -0400 [Re
Jeffrey J. Kosowsky wrote at about 18:58:51 -0400 on Tuesday, October 4, 2011:
After the recent thread on bad md5sum file names, I ran a check on all
my 1.1 million cpool files to check whether the md5sum file names are
correct.
I got a total of 71 errors out of 1.1 million files:
- 3
Hi,
Jeffrey J. Kosowsky wrote on 2011-10-06 22:54:44 -0400 [Re: [BackupPC-users]
Bad md5sums due to zero size (uncompressed) cpool?files - WEIRD BUG]:
OK... this is a little weird maybe...
[...]
On all (saved) backups, up to backup 82, the file (and the
corresponding cpool file e/f/0
Hi,
I wrote on 2011-10-07 05:46:36 +0200 [Re: [BackupPC-users] Bad md5sums due to
zero size (uncompressed) cpool files - WEIRD BUG]:
[...]
So far, *none* of my 1.1 million pool files (875000 checked so far) seem to be
empty.
1148398 files in 4096 directories checked, 0 zero-length with, 0
Holger Parplies wrote at about 05:46:36 +0200 on Friday, October 7, 2011:
Hi,
Jeffrey J. Kosowsky wrote on 2011-10-06 22:54:44 -0400 [Re: [BackupPC-users]
Bad md5sums due to zero size (uncompressed) cpool?files - WEIRD BUG]:
OK... this is a little weird maybe...
[...]
On all
Hi,
Jeffrey J. Kosowsky wrote on 2011-10-04 18:58:51 -0400 [[BackupPC-users] Bad
md5sums due to zero size (uncompressed) cpool files - WEIRD BUG]:
After the recent thread on bad md5sum file names, I ran a check on all
my 1.1 million cpool files to check whether the md5sum file names
Holger Parplies wrote at about 17:41:48 +0200 on Wednesday, October 5, 2011:
Hi,
Jeffrey J. Kosowsky wrote on 2011-10-04 18:58:51 -0400 [[BackupPC-users] Bad
md5sums due to zero size (uncompressed) cpool files - WEIRD BUG]:
After the recent thread on bad md5sum file names, I ran
After the recent thread on bad md5sum file names, I ran a check on all
my 1.1 million cpool files to check whether the md5sum file names are
correct.
I got a total of 71 errors out of 1.1 million files:
- 3 had data in it (though each file was only a few hundred bytes
long)
- 68 of the 71 were
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