On 11/17/20 2:09 PM, Tim Evans wrote:
On 11/15/20 1:37 PM, Tim Evans wrote:
Just upgraded my server to Fedora 33 from F32 via command-line upgrade
process.
Since then, SMB backups of my Windows 10 client are failing
consistently, with this in the log file:
2020-11-15 13:00:02 incr backup started back to 2020-11-14 08:13:18
(backup #845) for share C$
2020-11-15 13:00:05 Got fatal error during xfer (Non-zero exit status
from smbclient)
2020-11-15 13:00:10 Backup aborted (Non-zero exit status from smbclient)
2020-11-15 13:00:10 Removing empty backup #845
Yesterday morning's (prior to F33 upgrade) was successful:
Update from the OP here. Have tried multiple things, with no success,
including:
Upping log level for both BackupPC (BackupPC-4.4.0-2.fc33.x86_64) and
smbclient itself: the former provided loads of info, but nothing about
the *nearly instant* fatal error from 'smbclient' (as shown above, it
takes about 3 seconds)
Downgrading 'smbclient' on the server from
samba-client-4.13.2-1.fc33.x86_64. No change here.
Command-line basic testing of 'smbclient' works fine, BTW:
[root@osprey ~]# smbclient -U backup //new-pelican/c$
Enter backup's password:
Try "help" to get a list of possible commands.
smb: \>
I've also booted the server back to the last remaining F32 kernel.
Nothing changed.
On the Windows 10 client, the update "Feature update to Windows 10,
version 20H2" was installed several days *before* these failures
started, and FOUR successful backups, including a full, have run since
then. None since the F33 upgrade, though.
So, in sum, 'smbclient' is failing almost immediately on startup of a
backup, with no indication as to bad/expired password or other
authentication issue.
Anyone have additional suggestions? Thanks.
Sure is quiet out there...so here I am again with more info. Hope this
tickles someone's knowledge and that you can help.
So, I have re-installed BackupPC (via dnf reinstall). Backups still
failing, but with different stuff in the log file. Here's a portion of
the errlog from a failed full backup (Note exit code 256 AND the
permission denied message as well on /var/lib/samba/lock/gencache.tdb )
XferLOG file /raptor/pc-backups//pc/new-pelican/XferLOG.891.z created
2020-11-20 11:00:02
Backup prep: type = full, case = 4, inPlace = 0, doDuplicate = 0,
newBkupNum = 891, newBkupIdx = 13, lastBkupNum = 890, lastBkupIdx = 12
(FillCycle = 0, noFillCnt = 0)
Running: /usr/bin/smbclient \\\\new-pelican\\C\$ -U backup -E -d 2 -c
tarmode\ full -Tc -
full backup started for share C$
Xfer PIDs are now 42721,42720
tar:1746 DUMP:t->to_process = 1
tar:1747 DUMP:t->mode.operation = TAR_CREATE
tar:1748 DUMP:t->mode.selection = TAR_INCLUDE
tar:1749 DUMP:t->mode.blocksize = 20
tar:1750 DUMP:t->mode.hidden = 1
tar:1751 DUMP:t->mode.system = 1
tar:1752 DUMP:t->mode.incremental = 0
tar:1753 DUMP:t->mode.reset = 0
tar:1754 DUMP:t->mode.dry = 0
tar:1755 DUMP:t->mode.verbose = 0
tar:1756 DUMP:t->total_size = 0
tar:1757 DUMP:t->tar_path = -
tar:1758 DUMP:t->path_list_size = 0
tar:1764 DUMP:t->path_list @ (nil) (0 elem)
rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
XferErr interpret_interface: Adding interface 192.168.252.3/255.255.255.0
[ skipped 1 lines ]
XferErr tdb(/var/lib/samba/lock/gencache.tdb): tdb_open_ex: could not
open file /var/lib/samba/lock/gencache.tdb: Permission denied
tarExtract: /usr/share/BackupPC/bin/BackupPC_tarExtract: got Full = 1
tarExtract: /usr/share/BackupPC/bin/BackupPC_tarExtract starting...
(XferLogLevel = 2)
[ skipped 54 lines ]
readOutput: sysread returns 0 and got EOF (exit ok = , )
XferErr Non-zero exit status from smbclient
[ skipped 2 lines ]
tarExtract: Unexpected end of tar archive (tot = 10993, num = 10240,
errno = , posn = )
tarExtract: Removing partial file
$Recycle.Bin/S-1-5-21-1479735809-3582899389-406748754-1003/$RYTAKUR.eml
[ skipped 60 lines ]
tarExtract: BackupPC_tarExtact aborting (Unexpected end of tar archive)
tarExtract: Done: 1 errors, 47 filesExist, 139478798 sizeExist,
137948090 sizeExistComp, 47 filesTotal, 139478798 sizeTotal, 0 filesNew,
0 sizeNew, 0 sizeNewComp, 10555998 inodeLast
BackupPC_tarExtract exited with fail status 256
So, I have tried running the smbclient command (see above) manually.
After about 30 seconds, a sigsegv with core dump was reported, and
Fedora prompted me to report the issue. See
https://bugzilla.redhat.com/show_bug.cgi?id=1900232 ("[abrt]
samba-client: remove_do_list_queue_head(): smbclient killed by SIGSEGV").
--
Tim Evans | 5 Chestnut Court
| Owings Mills, MD 21117
| 443-394-3864
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