Bug 2227809 - snap-schedule: allow retention spec to specify max number of snaps to retain
Summary: snap-schedule: allow retention spec to specify max number of snaps to retain
Keywords:
Status: NEW
Alias: None
Product: Red Hat Ceph Storage
Classification: Red Hat Storage
Component: CephFS
Version: 7.0
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: ---
: 7.0
Assignee: Venky Shankar
QA Contact: Hemanth Kumar
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-07-31 14:50 UTC by Milind Changire
Modified: 2023-08-03 04:00 UTC (History)
4 users (show)

Fixed In Version:
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Clone Of: 2227806
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Red Hat Issue Tracker RHCEPH-7112 0 None None None 2023-07-31 14:51:26 UTC

Description Milind Changire 2023-07-31 14:50:06 UTC
+++ This bug was initially created as a clone of Bug #2227806 +++

Description of problem:
Along with daily, weekly, monthly and yearly snaps, users also need a way to mention the max number of snaps they need to retain if they feel that MAX_SNAPS_PER_PATH (50) is insufficient for their purpose.

eg. the new snap-schedule with the retention spec could be: /PATH 1d1m 75n

where a max of 75 snaps from the 1d1m snap-schedule will be retained. If number of snaps ('n') are not specified as the retention spec then the default of MAX_SNAPS_PER_PATH (50) should be applicable.

NOTE: the max number of snaps possible are also a function of the system-wide config named mds_max_snaps_per_dir, which currently defaults to 100

So, if the number of snaps for a path/dir that need to be created exceeds 100, then a user would first need to tweak the value for mds_max_snaps_per_dir before updating the snap-schedule retention spec beyond 100.

NOTE: Since mds_max_snaps_per_dir is a run-time system-wide spec, any change to that config will immediately affect existing snap-schedule retention specs.



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--- Additional comment from RHEL Program Management on 2023-07-31 20:15:26 IST ---

Please specify the severity of this bug. Severity is defined here:
https://bugzilla.redhat.com/page.cgi?id=fields.html#bug_severity.

Comment 1 RHEL Program Management 2023-07-31 14:50:22 UTC
Please specify the severity of this bug. Severity is defined here:
https://bugzilla.redhat.com/page.cgi?id=fields.html#bug_severity.


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