Bug 37342 - Several tdbbackup processes piling up (blocked by samba)
Several tdbbackup processes piling up (blocked by samba)
Status: RESOLVED WONTFIX
Product: UCS
Classification: Unclassified
Component: Samba4
UCS 4.2
Other Linux
: P5 normal (vote)
: ---
Assigned To: Samba maintainers
:
Depends on: 37343
Blocks:
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Reported: 2014-12-15 12:43 CET by Arvid Requate
Modified: 2020-07-03 20:54 CEST (History)
0 users

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What kind of report is it?: Bug Report
What type of bug is this?: 1: Cosmetic issue or missing function but workaround exists
Who will be affected by this bug?: 2: Will only affect a few installed domains
How will those affected feel about the bug?: 1: Nuisance – not a big deal but noticeable
User Pain: 0.011
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School Customer affected?:
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Description Arvid Requate univentionstaff 2014-12-15 12:43:52 CET
In an internal UCS@school environment the Samba server was in an unusable state, blocking S4 LDAP searches:

ldap.SERVER_DOWN: {'desc': "Can't contact LDAP server"}

There was only one Samba process left, which apparently had refused to die during a samba restart:

 4924 ?        S      0:01 /usr/sbin/samba -D


The issue probably has caused several tdbbackup jobs piling up:

 2397 ?        Ss     0:04 /usr/sbin/cron
31430 ?        S      0:00  \_ /USR/SBIN/CRON
31462 ?        Ss     0:00  |   \_ /bin/sh -c /usr/sbin/univention-samba4-backup 
31470 ?        S      0:00  |       \_ /bin/bash /usr/sbin/univention-samba4-backup
31531 ?        S      0:00  |           \_ tdbbackup ./private/sam.ldb.d/DC=NAJJAR,DC=LOCAL.ldb
22854 ?        S      0:00  \_ /USR/SBIN/CRON
22892 ?        Ss     0:00  |   \_ /bin/sh -c /usr/sbin/univention-samba4-backup 
22900 ?        S      0:00  |       \_ /bin/bash /usr/sbin/univention-samba4-backup
22988 ?        S      0:00  |           \_ tdbbackup ./private/sam.ldb.d/DC=NAJJAR,DC=LOCAL.ldb
17992 ?        S      0:00  \_ /USR/SBIN/CRON
18031 ?        Ss     0:00      \_ /bin/sh -c /usr/sbin/univention-samba4-backup 
18038 ?        S      0:00          \_ /bin/bash /usr/sbin/univention-samba4-backup
18105 ?        S      0:00              \_ tdbbackup ./private/sam.ldb.d/DC=NAJJAR,DC=LOCAL.ldb

Cause and effect are a bit unclear, but judging from the PIDs I would guess that samba is the culprint. Anyway, The tdbbackup processes must not pile up like that.
Comment 1 Ingo Steuwer univentionstaff 2020-07-03 20:54:49 CEST
This issue has been filed against UCS 4.2.

UCS 4.2 is out of maintenance and many UCS components have changed in later releases. Thus, this issue is now being closed.

If this issue still occurs in newer UCS versions, please use "Clone this bug" or reopen it and update the UCS version. In this case please provide detailed information on how this issue is affecting you.