Why is a .snapshot directory listed in df command output in TIBCO LogLogic LMI?
Article ID: KB0077434
Updated On:
| Products | Versions |
|---|---|
| TIBCO LogLogic Enterprise Virtual Appliance | all versions up to 6.2.1 |
Description
If you are using NetApp as your NAS solution you may see output similar to the following in the df output on your appliance. The .snapshot entry is caused by using the snapshot feature of NetApp rather than any normal operation of LogLogic LMI. The existence of the .snapshot entry in the df output is expected based on NetApp documentation and allows the NFS client to access historical snapshots of the data hosted on the NetApp device. A .snapshot entry will be listed for each share mounted from the NetApp.
Logapp root:~ 0$ df -Ph
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.4G 196K 7.4G 1% /dev
tmpfs 7.4G 0 7.4G 0% /dev/shm
/dev/sda1 2.0G 1.6G 319M 84% /
/dev/sda2 2.0G 986M 880M 53% /failsafe
/dev/mapper/llvg-lllv_tmp 984M 1.7M 932M 1% /tmp
/dev/mapper/llvg-lllv_db 3.7T 3.2T 436G 89% /loglogic
none 751M 4.7M 747M 1% /loglogic/data/dbi
10.10.10.10:/data/vol1/NFS/logs 210T 169T 41T 81% /loglogic/data/archive/mount_2/vol1
10.10.10.10:/data/vol1/NFS/logs/.snapshot 210T 169T 41T 81% /loglogic/data/archive/mount_2/vol1/.snapshot
Note the above output is generated on an LMI running pre-6.2.1 version.
LMI does not support the snapshot feature being enabled on NetApp and visible on the clients so it should be disabled or hidden.
Logapp root:~ 0$ df -Ph
Filesystem Size Used Avail Use% Mounted on
devtmpfs 7.4G 196K 7.4G 1% /dev
tmpfs 7.4G 0 7.4G 0% /dev/shm
/dev/sda1 2.0G 1.6G 319M 84% /
/dev/sda2 2.0G 986M 880M 53% /failsafe
/dev/mapper/llvg-lllv_tmp 984M 1.7M 932M 1% /tmp
/dev/mapper/llvg-lllv_db 3.7T 3.2T 436G 89% /loglogic
none 751M 4.7M 747M 1% /loglogic/data/dbi
10.10.10.10:/data/vol1/NFS/logs 210T 169T 41T 81% /loglogic/data/archive/mount_2/vol1
10.10.10.10:/data/vol1/NFS/logs/.snapshot 210T 169T 41T 81% /loglogic/data/archive/mount_2/vol1/.snapshot
Note the above output is generated on an LMI running pre-6.2.1 version.
LMI does not support the snapshot feature being enabled on NetApp and visible on the clients so it should be disabled or hidden.
Issue/Introduction
This article explains why a .snapshot directory mountpoint is visible in the output of the df command on a LogLogic LMI appliance and how to remove it.
Environment
Only LMI appliances with archiving enabled using NetApp storage devices as the NFS server.
Resolution
See 000036898 for steps on how to disable or hide the snapshot feature on NetApp and the effects of not doing so.
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