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Snapshots have stopped
Hi, I have had my ReadyNAS 314 for quite a number of years with Snapshots enabled and have only had one issue during all that time which the ReadyNAS team resolved for me after a firmware update (2 -...
The default setting was 95%, but they might have dropped it down to 90% after that (my own NAS is set to 90). If yours is set to 85%, then you probably adjusted it.
But I think that explains it. Your system is over the threshold (~86% full based on your earlier post). The system probably started deleting the oldest snapshots a while ago - bringing the free space back up to 85%. But your main volume continued to grow and eventually the system deleted them all.
So the solution is to expand the volume. Though you could bump the setting up a bit for now, I wouldn't go above 90.
I have 709 GB of 4.75 TB free - about 15%.
I see this message in the Logs, but have been comfortable with the space free until it drops below 10% - Volume: Less than 20% of volume data's capacity is free. Performance on volume data will degrade if additional capacity is consumed. NETGEAR recommends that you add capacity to avoid performance degradation.
Have you looked in the log zip file? snapper.log has a list of snapshots - you can use that to confirm that you have no recent ones.
Also look for "snapper" in system.log. You should see some indication that it is running (and hopefully saying why it failed to create a snapshot).
darthy wrote:
... have been comfortable with the space free until it drops below 10% - Volume: Less than 20% of volume data's capacity is free.
The on-disk snapshot space can sometimes increase dramatically very quickly, so I personally don't recommend allowing free space to drop to 10%. You easily can end up with problems that require you to destroy your volume and restore it from backup. I have run at 15% at times.
One problem with the smart snapshots is that the monthly ones are never pruned - so eventually they will fill the volume. Options to avoid that are
- manually delete old snapshots from time to time
- switch to custom snapshots, which have a retention setting.
Personally I use custom snapshots.
Anyway, you might want to delete some of the oldest snapshots after you get the main problem resolved (or consider switching to the custom settings).
Thanks for the advice, and will look to add more disk space and setup custom snapshots, but would like to get this issue resolved first.
I'm not sure where to find log.zip, however, in the rsyslog folder I have a syslog file and can see a few snapper entries in there but not really showing much except for these two entries:
Aug 6 19:03:30 ReadyNAS dbus[2875]: [system] Activating service name='org.opensuse.Snapper' (using servicehelper)
Aug 6 19:03:30 ReadyNAS dbus[2875]: [system] Successfully activated service 'org.opensuse.Snapper'
darthy wrote:I'm not sure where to find log.zip,
You download it from the log page in the admin web ui.
darthy wrote:
however, in the rsyslog folder
Are you using the LogAnalyzer app? There are quite a few posters who have run into problems with that app - in particular it can fill the OS partition on the NAS.
If you have ssh installed, then perhaps check the space utilitization for the OS.
Also, you can also look for snapper via journalctl
# journalctl --no-pager | grep -i snapper
Thanks again for the great help. I have run the following commands using ssh (I think they're the correct ones to run):
# btrfs fi show /data
Label: '43f61cdc:data' uuid: 3b5a9e34-5b9f-4833-9e0a-de5911368cb8
Total devices 1 FS bytes used 4.74TiB
devid 1 size 5.45TiB used 4.79TiB path /dev/md127# btrfs fi df /data
Data, single: total=4.76TiB, used=4.74TiB
System, DUP: total=32.00MiB, used=608.00KiB
Metadata, DUP: total=10.50GiB, used=6.40GiB
GlobalReserve, single: total=512.00MiB, used=0.00BLooks like almost no free space available on the data drive, which is not what the GUI is showing me, but not familiar with these commands so might be misinterpreting the results.
I downloaded the log files and looked at snapper.log, there is nothing really in here, it shows the following:
Config: 0, subvolume: /data/Software
Type | # | Pre # | Date | User | Cleanup | Description | Userdata
-------+---+-------+------+------+---------+-------------+---------
single | 0 | | | root | | current |Config: 1, subvolume: /data/Backup
Type | # | Pre # | Date | User | Cleanup | Description | Userdata
-------+---+-------+------+------+---------+-------------+---------
single | 0 | | | root | | current |Config: 2, subvolume: /data/Documents
Type | # | Pre # | Date | User | Cleanup | Description | Userdata
-------+---+-------+------+------+---------+-------------+---------
single | 0 | | | root | | current |Config: 3, subvolume: /data/Music
Type | # | Pre # | Date | User | Cleanup | Description | Userdata
-------+---+-------+------+------+---------+-------------+---------
single | 0 | | | root | | current |Config: 4, subvolume: /data/Pictures
Type | # | Pre # | Date | User | Cleanup | Description | Userdata
-------+---+-------+------+------+---------+-------------+---------
single | 0 | | | root | | current |Config: 5, subvolume: /data/readydrop
Type | # | Pre # | Date | User | Cleanup | Description | Userdata
-------+---+-------+------+------+---------+-------------+---------
single | 0 | | | root | | current |Config: 6, subvolume: /data/Videos
Type | # | Pre # | Date | User | Cleanup | Description | Userdata
-------+---+-------+------+------+---------+-------------+---------
single | 0 | | | root | | current |Config: 7, subvolume: /data/istat
Type | # | Pre # | Date | User | Cleanup | Description | Userdata
-------+---+-------+------+------+---------+-------------+---------
single | 0 | | | root | | current |Config: 8, subvolume: /data/rsyslog
Type | # | Pre # | Date | User | Cleanup | Description | Userdata
-------+---+-------+------+------+---------+-------------+---------
single | 0 | | | root | | current |
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