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zfsonlinux / pkg-zfs

Native ZFS packaging for Debian and Ubuntu
https://launchpad.net/~zfs-native/+archive/daily
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zfs-auto-snapshot fails on transition to winter time #100

Closed durandalTR closed 10 years ago

durandalTR commented 10 years ago

I found an edge case here. Last night was the transition from summer time to winter time so at 3am the clock was put back to 2am. 

cannot create snapshot 'tank@zfs-auto-snap_frequent-2013-10-27-0200': 
dataset already exists no snapshots were created

4 snapshots (every 15 mins between 2 and 3am (winter time) were not created as those times were already used in the filenames.

/etc/cron.hourly/zfs-auto-snapshot:
cannot create snapshot 'tank@zfs-auto-snap_hourly-2013-10-27-0217': 
dataset already exists no snapshots were created

1 hourly snapshot was not created either.

No other adverse effects observed.

dajhorn commented 10 years ago

This bug should be resolved by zfsonlinux/zfs-auto-snapshot#18, which makes UTC stamps the default. The fix is committed to head but has not yet been tagged for release.

dajhorn commented 10 years ago

This bug should be resolved by the 1.1.0 release.