Hi all,

 

my BPC 4 Installation (on Debian 8, Pool on ZFS) has been running fine so far.

There are 91 hosts that have been backed up, for a total of:

 

    357 full backups of total size 21698.30GiB (prior to pooling and compression),

    1658 incr backups of total size 1605.12GiB (prior to pooling and compression).

 

But when I did an archive, I noticed quite some errors:

 

Excerpt from archive.log:

 

…

Writing tar archive for host n128, backup #39, split to output files /media/truecrypt1/n128.39.tar.gz.*

Unable to open file /data/BackupPC/pool/00/00/00000000000000000000000000000000

Unable to open file /data/BackupPC/pool/34/42/354244353641350000fdab86b305a483

Unable to open file /data/BackupPC/pool/0c/de/0cdf558543a65bcad328000000000000

Unable to open file /data/BackupPC/pool/00/00/00000000000000000000000000000000

Unable to open file /data/BackupPC/pool/46/30/46313339303036314432313432463700

Unable to open file /data/BackupPC/pool/00/00/00000000000000000000000000000000

Done: 166796 files, 54304422997 bytes, 4458 dirs, 0 specials, 6 errors

…

 

Also, when doing an incremental Backup of that host:

 

Running BackupPC_refCountUpdate -h n128 on n128

xferPids 26755

BackupPC_refCountUpdate: host n128 got 0 errors

BackupPC_refCountPrint: total errors: 0

xferPids

Finished BackupPC_refCountUpdate (running time: 1 sec)

Running BackupPC_refCountUpdate -h n128 -f -c on n128

xferPids 26759

Host n128 digest.0 00000000000000000000000000000000 count is 18, but should be 19

Host n128 digest.0 a399957ce1fcba591cc58367faabad93 count is 6, but should be 5

BackupPC_refCountUpdate: host n128 got 2 errors

BackupPC_refCountPrint: total errors: 2

xferPids

Finished BackupPC_refCountUpdate (running time: 11 sec)

 

 

 

I then had a look at the general BPC Logfile, and sure enough, the nightly jobs are reporting these files as missing too:

 

Contents of file /var/log/BackupPC/LOG, modified 2016-01-22 14:00:34

 

2016-01-21 21:00:00 Running 2 BackupPC_nightly jobs from 0..15 (out of 0..15)

2016-01-21 21:00:00 Running BackupPC_nightly -m -P 9 0 127 (pid=10496)

2016-01-21 21:00:00 Running BackupPC_nightly -P 9 128 255 (pid=10497)

2016-01-21 21:00:00 Next wakeup is 2016-01-21 21:30:00

2016-01-21 21:00:01 BackupPC_nightly now running BackupPC_refCountUpdate -m -s -c -P 9 -r 128-255

2016-01-21 21:00:01 BackupPC_nightly now running BackupPC_refCountUpdate -m -s -c -P 9 -r 0-127

2016-01-21 21:02:37  admin : Missing pool file 00000000000000000000000000000000 count 35

2016-01-21 21:02:37  admin : Missing pool file 001000001045283f904033e72800848e count 1

2016-01-21 21:02:37  admin : Missing pool file 01a995a601000010bda3f79705a48302 count 1

2016-01-21 21:02:37  admin : Missing pool file 0000c62cf2f281030000100000000000 count 2

2016-01-21 21:02:37  admin : Missing pool file 00f466f81d0000101000000000000000 count 1

2016-01-21 21:02:37  admin : Missing pool file 0010020000c702a9aa18000010190000 count 1

2016-01-21 21:02:37  admin : Missing pool file 0000100010330000f7b0b1aa05a48302 count 1

2016-01-21 21:02:37  admin : Missing pool file 0000d596bc9505a48302000080d007de count 1

2016-01-21 21:02:37  admin : Missing pool file 0000b5ce999705a48302000080fc0583 count 1

2016-01-21 21:02:38  admin1 : Missing pool file 80f8a701000010000010af95a7010000 count 1

2016-01-21 21:04:52  admin1 : Missing pool file 8800053438303139000085c5b4a505a4 count 1

…

2016-01-21 21:21:18  admin1 : BackupPC_refCountPrint: total errors: 25

2016-01-21 21:21:18  admin1 : xferPids

2016-01-21 21:21:18 Finished  admin1  (BackupPC_nightly -P 9 128 255)

2016-01-21 21:21:43  admin : BackupPC_refCountPrint: total errors: 39

2016-01-21 21:21:43  admin : xferPids

…

 

Is this something to be worried about? And what could cause it?

It’s running on server-grade hardware, ECC RAM etc., the ZFS Pool looks completely healthy, so I’d tend to rule out flaky hardware.

Is there a way to find out to which files these hashes belong to? Maybe there is something special about them.

 

Regards,
Christian

 

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