Re: maxfilesize and compression
1997-02-28 10:38:35
Subject: |
Re: maxfilesize and compression |
From: |
Michael R Vogt <vogt AT AUK.NIST DOT GOV> |
Date: |
Fri, 28 Feb 1997 10:38:35 -0500 |
>Michael, was there sufficient room in the disk storage pool? If not,
>the files will go directly to tape.
>
>Ron Clendenny <rdclendenny AT cal.ue DOT com>
>Callaway Nuclear Power Plant
>Fulton, Missouri
Yes. The disk storage pool is 10GB and is about 50% full. And no migration
started during or after the backup.
I just did a "dsmc selective" on 1 file that was 19MB.
I got the message "Waiting for mount of offline media...." and yet the
summary showed "Total number of bytes transferred: 6,387.6 KB" and
"Compression percent reduction: 66.39%". A query occupancy shows:
Type Filespace Storage Number of Space
Name Pool Name Files Occupied
(MB)
---- ----------- ----------- --------- ----------
Bkup /home TAPE_BU 1 6.15
Bkup /home TAPE_BU 1 6.15
>>-----Original Message-----
>>From: Michael R Vogt [SMTP:vogt AT AUK.NIST DOT GOV]
>>Sent: Thursday, February 27, 1997 4:46 PM
>>To: ADSM-L AT VM.MARIST DOT EDU
>>Subject: maxfilesize and compression
>>
>>I have my primary storage pools defined as a hierarchy so that backup
>>files will be initially stored on disk, and then migrated to tape when
>>the disk storage pool becomes full.
>>
>>I have the "maxsize" parameter for my disk storage pool set to 16 M and yet
>>when some client backups run, files much smaller that 16 M are being stored
>>directly to tape.
>>
>>For example, yesterday I added a new client and at the end of the backup
>>session a query occupancy showed:
>>
>>Type Filespace Storage Number of Space
>> Name Pool Name Files Occupied
>> (MB)
>>---- ----------- ----------- --------- ----------
>>Bkup / DISK_BU 32,867 1,188.87
>>Bkup / TAPE_BU 3 8.67
>>
>>I also did a query content on the tape where the files were written and
>>it showed:
>>
>>Type Filespace Client's Name for File Stored Size Segment
>>Cached
>> Name Number
>>Copy?
>>---- ---------- ------------------------- ------------ ----------
>>------
>>Bkup / /usr/local/bin/ dataplot 5.67 M 1/1
>>No
>>Bkup / /usr/oracle/dbs/ systora.dbf 2.05 M 1/1
>>No
>>Bkup / /usr/people/jackal/ AMDbank.ps 991,000 1/1
>>No
>>
>>If a client chooses compression, does ADSM use the original file size rather
>>than the compressed file size to make the decision on which pool to store
>>the file in ???
>
|
|
|