[zfs-discuss] Can't rm file when "No space left on device"...

[Rudolf Potucek]

> NO.  Snapshotting is sacred

LOL!

Ok, ok, I admit that snapshotting the whole ZFS root filesystem (yes, we have ZFS root in production, oops) instead of creating individual snapshots for *each* individual ZFS is against the code of good sysadmin-ing. I bow to the developer gods and will only follow the approved gospel in the future ;)

> once you break the model where a snapshot is a point-in-time picture, all sorts of bad things can happen.   You've changed a fundamental assumption of snapshots, and this then impacts how we view them from all sorts of angles; it's a huge loss to trade away for a very small gain.

Hmm ... I can see how the assumption of a snapshot being unalterable could provide some programming shortcuts and opportunities for optimization of ZFS code. Not sure that I understand the "huge loss" perspective though. I think at the point where I am desperately scrabbling to free 30% of my root FS held hostage by an accidental snapshot while keeping on-line backup strategy in tact, I won't be too worried about performance ;)

> Should you want to modify a snapshot for some reason, that's what the 'zfs clone' function is for.  clone your snapshot,  promote it, and make your modifications.

Err ... hello ... filesystem already full ... hello?
-- 
This message posted from opensolaris.org