Re: [lustre-discuss] space is not released when removing files using zfs-0.6.4.2-1 and Lustre 2.8.0

You can lfsck to see if there exists any orphan objects. I’m adding nasf into cc list and hopefully he can provide specific commands to run. Jinshan On Sep 15, 2016, at 11:23 PM, Xiong, Jinshan > wrote: It turned out that the object 136

Re: [lustre-discuss] space is not released when removing files using zfs-0.6.4.2-1 and Lustre 2.8.0

It turned out that the object 136 are an internal object for object accounting. Therefore, the results you posted seem to be normal. Jinshan On Sep 15, 2016, at 6:27 PM, Xiong, Jinshan > wrote: Thanks for the info. It makes more sense to

Re: [lustre-discuss] space is not released when removing files using zfs-0.6.4.2-1 and Lustre 2.8.0

Thanks for the info. It makes more sense to be an OST object - I was looking at wrong source where ’trusted.lma’ is extended for OST objects, which misled me to think this must be a MDT object. It seems like the objects on the MDT were deleted by ‘rm’ but somehow the objects on the OST side

Re: [lustre-discuss] space is not released when removing files using zfs-0.6.4.2-1 and Lustre 2.8.0

Hi Andreas, The one "broken object" that we removed as a test, did live in O/0/d*. This was the only file we removed while having a clone mounted as "native" ZFS (changing ZFS property "canmount=yes"). We had took a snapshot followed by ZFS send/receive to another zpool to accomplish this

Re: [lustre-discuss] space is not released when removing files using zfs-0.6.4.2-1 and Lustre 2.8.0

Note that the "broken objects" may be Lustre internal metadata, such as the Object Index files, so deleting them may be bad for your filesystem without knowing what they are. Not that I can say for sure your bug is fixed, but ZFS 0.6.4 is getting a bit long in the tooth (tagged April 8, 2015),

Re: [lustre-discuss] space is not released when removing files using zfs-0.6.4.2-1 and Lustre 2.8.0

Hi Jinshan, The examples in the first part of the thread are from one of our OST's. We had all previous files/dirs pinned" to the OST via setstripe; so there was a specific top level directory associated with this specific OST. After the recursive rm, we noticed the ZFS OST, still showed space

Re: [lustre-discuss] space is not released when removing files using zfs-0.6.4.2-1 and Lustre 2.8.0

Hi Tom, Just to narrow down the problem, when you saw the space was not freed from zpool, were you seeing this from MDT or OST zpool? It seems that the objects you dumped were from MDT pool. The object 138 should belong to a Lustre file, and it has a spilled block attached. Jinshan On Sep 9,