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MSDP mount point reaches 90%

Dav1234
Level 5

Hello Experts,

One of my MSDP mount point reaches to 90%. 

XXXXXXXX:/msdp/data/dp1/3pdvol # df -h

/dev/vx/dsk/nbuapp/XXXX   4.1T  3.7T  443G  90% /msdp/data/dp1/XXXXX

There are many containers under questioned mount point and when I open one container, I see the files of dated 2020 but here we have local retention of 35 days only

 

xxxxxxx:/msdp/data/dp1/xxxxx/xxxx # ll

total 24689784

-rw-r----- 1 root root    25876 May 14  2020 1012738.bhd

-rw-r----- 1 root root  1176717 May 14  2020 1012738.bin

-rw-r----- 1 root root  1288612 Mar 14  2020 1012739.bhd

-rw-r----- 1 root root 67107160 Mar 14  2020 1012739.bin

-rw-r----- 1 root root   975520 May 14  2020 1012740.bhd

-rw-r----- 1 root root 48299517 May 14  2020 1012740.bin

-rw-r----- 1 root root  1621792 Mar 14  2020 1012741.bhd

-rw-r----- 1 root root 67107676 Mar 14  2020 1012741.bin

May be These files must be having references for other images hence they are not deleted but still my query is we have retention of 35 days only, it shouldn't show this much older data.

2 ACCEPTED SOLUTIONS

Accepted Solutions

Nicolai
Moderator
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hi @Dav1234 

Containers from 2020 can easily contain data block present in 2020 that is still present in 2023. Let's imagine you did a backup of a host in 2020 and still backup that host today, then data block from that time is still required to perform a restore today. Dedupe is basically a compare of unique fingerprint, do I have it, reference it, if not put it in a container file.  First when the reference count to a data block is 0, is the data block removed from the container files.

Never ever delete files manual from MSDP. Bad things will happen ;)

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Nicolai
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Correct, the files will not be deleted before all the unique data block (Image data) contained in the files are deleted.

/Nicolai

View solution in original post

3 REPLIES 3

Nicolai
Moderator
Moderator
Partner    VIP   

hi @Dav1234 

Containers from 2020 can easily contain data block present in 2020 that is still present in 2023. Let's imagine you did a backup of a host in 2020 and still backup that host today, then data block from that time is still required to perform a restore today. Dedupe is basically a compare of unique fingerprint, do I have it, reference it, if not put it in a container file.  First when the reference count to a data block is 0, is the data block removed from the container files.

Never ever delete files manual from MSDP. Bad things will happen ;)

Hello Nicolai,

Means below are the data blocks under containers? and it will not be deleted until all references to these data blocks are deleted?

-rw-r----- 1 root root 67107160 Mar 14  2020 1012739.bin

-rw-r----- 1 root root   975520 May 14  2020 1012740.bhd

-rw-r----- 1 root root 48299517 May 14  2020 1012740.bin

-rw-r----- 1 root root  1621792 Mar 14  2020 1012741.bhd

-rw-r----- 1 root root 67107676 Mar 14  2020 1012741.bin

And 

Nicolai
Moderator
Moderator
Partner    VIP   

Correct, the files will not be deleted before all the unique data block (Image data) contained in the files are deleted.

/Nicolai