DLT 7000 ufsdump compression
2007-12-24 21:00:00
We currently have a SUN Enterprise 4500 running Solaris 8 with a Storedge
L280 (DLT7000) tape unit. We do not have Veritas or network backup. I run a
ufsdump on the filesystems on a DLT tape IV which claims to be able to hold
35gb native to 70gb compressed.
For some reason I have been unable to make these filesystems compress using
the u or h options (See Below). Normally, I run the ufsdump on all of the
below filesystems which should fit on one tape. Any solutions?
# df -k
Filesystem kbytes used avail capacity Mounted on
/dev/dsk/c1t10d0s0 963869 479038 388445 56% /
/dev/dsk/c1t10d0s3 963869 772840 94643 90% /usr
/proc 0 0 0 0% /proc
fd 0 0 0 0% /dev/fd
mnttab 0 0 0 0% /etc/mnttab
/dev/dsk/c1t10d0s4 987302 195779 692793 23% /var
swap 3941240 16 3941224 1% /var/run
/dev/dsk/c1t11d0s4 7327165 3645616 2948833 56% /opt
/dev/dsk/c0t0d0s4 16636344 9890772 5081938 67% /opt2
/dev/dsk/c1t12d0s4 8574394 1494819 6993832 18% /opt1
/dev/dsk/c0t9d0s4 17410894 7480878 9755908 44% /opt5
/dev/dsk/c0t8d0s4 16636344 1948590 13024120 14% /opt4
/dev/dsk/c1t13d0s5 3099093 1161521 1875591 39% /oradata
swap 3943112 1888 3941224 1% /tmp
/dev/dsk/c1t10d0s5 3853640 1686597 1781679 49% /operator
/dev/dsk/c0t2d0s4 17413250 1273168 15965950 8% /opt6
/dev/dsk/c0t1d0s4 16636344 3173667 11799043 22% /opt3
/dev/dsk/c0t10d0s4 17413250 3933341 13305777 23% /opt7
/dev/dsk/c1t13d0s6 5473488 1330307 4088447 25% /hnmdata
archiver:/data1 35011461 28633458 6027889 83% /data1
archiver:/data2 35011461 25396373 9264974 74% /data2
First using the u option
# ufsdump 0uf /dev/rmt/1u /opt1
DUMP: Writing 32 Kilobyte records
DUMP: Date of this level 0 dump: Tue 16 Oct 2001 09:43:39 AM EDT
DUMP: Date of last level 0 dump: the epoch
DUMP: Dumping /dev/rdsk/c1t12d0s4 (hnmrcn1:/opt1) to /dev/rmt/1u.
DUMP: Mapping (Pass I) [regular files]
DUMP: Mapping (Pass II) [directories]
DUMP: Estimated 2989098 blocks (1459.52MB).
DUMP: Dumping (Pass III) [directories]
DUMP: Dumping (Pass IV) [regular files]
DUMP: Tape rewinding
DUMP: 2989054 blocks (1459.50MB) on 1 volume at 3950 KB/sec
DUMP: DUMP IS DONE
DUMP: Level 0 dump on Tue 16 Oct 2001 09:43:39 AM EDT
Second run using h instead of u option which does not seem to matter.
# ufsdump 0uf /dev/rmt/1h /opt1
DUMP: Writing 32 Kilobyte records
DUMP: Date of this level 0 dump: Tue 16 Oct 2001 09:54:43 AM EDT
DUMP: Date of last level 0 dump: the epoch
DUMP: Dumping /dev/rdsk/c1t12d0s4 (hnmrcn1:/opt1) to /dev/rmt/1h.
DUMP: Mapping (Pass I) [regular files]
DUMP: Mapping (Pass II) [directories]
DUMP: Estimated 2989142 blocks (1459.54MB).
DUMP: Dumping (Pass III) [directories]
DUMP: Dumping (Pass IV) [regular files]
DUMP: Tape rewinding
DUMP: 2989118 blocks (1459.53MB) on 1 volume at 3842 KB/sec
DUMP: DUMP IS DONE
DUMP: Level 0 dump on Tue 16 Oct 2001 09:54:43 AM EDT
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