[linux-lvm] Snapshot behavior on classic LVM vs ThinLVM

Gionatan Danti g.danti at assyoma.it
Tue May 16 07:53:33 UTC 2017

On 15/05/2017 17:33, Zdenek Kabelac wrote:> Ever tested this:
> mount -o errors=remount-ro,data=journal ?

Yes, I tested it - same behavior: a full thinpool does *not* immediately 
put the filesystem in a read-only state, even when using sync/fsync and 

So, it seems EXT4 remounts in read-only mode only when *metadata* 
updates fail.

> I prefer 'remount-ro'  as the FS is still at least accessible/usable in 
> some way.

Fair enought.

>>> Things are getting better

Can you make an example?

> So again - all has its price....

True ;)


Danti Gionatan
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