[Gluster-users] Gluster USER SERVICEABLE SNAPSHOTS: Cannot see `.snaps` directory

[Aravinda VK]

Is the Snapshot activated?

gluster snapshot activate <snapname>

Aravinda Vishwanathapura
https://kadalu.io

> On 21-Dec-2021, at 4:06 PM, samfisher1 <samfisher1 at 126.com> wrote:
> 
> Sorry for disturbing you... Uh, I met a very strange GlusterFS problem: I can access snapshots by using FUSE mount and it works fine. However, when I test Gluster USER-SERVICEABLE snapshots feature, I find I cannot see .snap directory in the NFS shared directory. So pls help me solve this problem, many thanks~
> My Gluster version is glusterfs 8.6. My OS version is CentOS 7.9.2009 
> Here is gluster volume and snapshot info.
> 
> ```
> [root at pgsql-1 media-cifs]# gluster v info disperse_vol_2
> 
> Volume Name: disperse_vol_2
> Type: Disperse
> Volume ID: a8bd1d15-20c0-43af-a66e-eb166bd92f4c
> Status: Started
> Snapshot Count: 5
> Number of Bricks: 1 x (4 + 2) = 6
> Transport-type: tcp
> Bricks:
> Brick1: pgsql-1:/run/gluster/snaps/1c51095f455d4b93b1dd2fcfdfdb6127/brick1/data
> Brick2: pgsql-2:/run/gluster/snaps/1c51095f455d4b93b1dd2fcfdfdb6127/brick2/data
> Brick3: pgsql-3:/run/gluster/snaps/1c51095f455d4b93b1dd2fcfdfdb6127/brick3/data
> Brick4: pgsql-1:/run/gluster/snaps/1c51095f455d4b93b1dd2fcfdfdb6127/brick4/data
> Brick5: pgsql-2:/run/gluster/snaps/1c51095f455d4b93b1dd2fcfdfdb6127/brick5/data
> Brick6: pgsql-3:/run/gluster/snaps/1c51095f455d4b93b1dd2fcfdfdb6127/brick6/data
> Options Reconfigured:
> features.show-snapshot-directory: on
> features.snapshot-directory: .snaps_disperse_vol_2
> features.uss: enable
> storage.fips-mode-rchecksum: on
> transport.address-family: inet
> nfs.disable: on
> features.quota: off
> features.inode-quota: off
> features.quota-deem-statfs: off
> features.barrier: disable
> snap-activate-on-create: disable
> cluster.enable-shared-storage: enable
> ```
> Here is the snapshot info:
> 
> ```
> [root at pgsql-1 media-cifs]# gluster snap info snap_disperse_vol_2_test1
> Snapshot                  : snap_disperse_vol_2_test1
> Snap UUID                 : 8cab3954-3055-43aa-b34f-bbff58375881
> Created                   : 2021-12-21 09:23:43
> Snap Volumes:
> 
>         Snap Volume Name          : 4dd90c9a08f1449fb865a368676ebd61
>         Origin Volume name        : disperse_vol_2
>         Snaps taken for disperse_vol_2      : 5
>         Snaps available for disperse_vol_2  : 251
>         Status                    : Started
> ```
> But I can not see any .snaps directory in the media3 directory.
> 
> ```
> [root at pgsql-1 media-cifs]# mount -t nfs 10.10.10.1:/disperse_vol_2 /media3/
> [root at pgsql-1 media-cifs]# ls -a /media3
> .       21.txt  24.txt  27.txt  2.txt   32.txt  35.txt  
> ..      22.txt  25.txt  28.txt  30.txt  33.txt  36.txt   
> ```
> I can access snapshot by using FUSE mount and it works fine.
> ```
> [root at pgsql-1 media-cifs]# mount -t glusterfs 10.10.10.1:/snaps/snap_disperse_vol_2_test1/disperse_vol_2 /mnt/snap/
> [root at pgsql-1 media-cifs]# ls /mnt/snap/
> 20.txt  23.txt  26.txt  29.txt  31.txt  34.txt  37.txt  3.txt   42.txt  45.txt  48.txt  50.txt  7.txt
> 21.txt  24.txt  27.txt  2.txt   32.txt  35.txt  38.txt  40.txt  43.txt  46.txt  49.txt  5.txt   8.txt
> 22.txt  25.txt  28.txt  30.txt  33.txt  36.txt  39.txt  41.txt  44.txt  47.txt  4.txt   6.txt   9.txt
> ```
> I haven't any clues to solve this problems, pls help me. tks~
> 
> 
> --
> Lee.T
>   
>                                                            
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