Veritas-bu

[Veritas-bu] duplication speed

2006-02-01 07:14:25
Subject: [Veritas-bu] duplication speed
From: dave.markham AT fjserv DOT net (Dave Markham)
Date: Wed, 01 Feb 2006 12:14:25 +0000
People i am moving an infrastructure from one site to the other. As part 
of this we are splitting things between different trucks for resilience.

I performed a full backup of the infrastructure yesterday and today am 
duplicating it.

I run solaris 8 Netbackup 5.0 mp5S2.

I am slightly concerned as it reckons the job is only 1% through on the 
gui.

When i run iostat -xn |egrep "rmt/0|rmt/2" i can see around 5mb/s which 
is about right for the DLT7000 drives i have in the L1000.

There are 32 images in total to duplicated and the backups took around 8 
hours to complete 290 gig. I need the duplications to be finished by 
tomorrow and as it has been nearly 2 hours now and saying only 1% 
complete im worried it wont be done.

Looking in the bptm logs i can see entries like this :-


12:04:15.737 [307] <2> io_write_back_header: drive index 0, 
clienta_1138722148, file num = 23, mpx_headers = 7, copy 2
12:04:15.737 [307] <2> io_write_back_header: drive index 0, 
client2_1138722153, file num = 23, mpx_headers = 6, copy 2
12:04:15.738 [307] <2> io_write_back_header: drive index 0, 
client3_1138722154, file num = 23, mpx_headers = 5, copy 2
12:04:15.739 [307] <2> io_write_back_header: drive index 0, 
client4_1138722155, file num = 23, mpx_headers = 4, copy 2
12:04:15.740 [307] <2> io_write_back_header: drive index 0, 
client5_1138722156, file num = 23, mpx_headers = 3, copy 2
12:04:15.741 [307] <2> io_write_back_header: drive index 0, 
client6_1138722157, file num = 23, mpx_headers = 2, copy 2
12:04:15.741 [307] <2> io_write_back_header: drive index 0, 
client7_1138722158, file num = 23, mpx_headers = 1, copy 2
12:04:15.742 [307] <2> write_data: completed writing backup header, 
start writing data when first buffer is available, copy 2
12:04:15.742 [307] <2> write_data: first write, twin_index: 0 cindex: 0 
dont_process: 1 wrote_backup_hdr: 1 finished_buff: 0
12:04:15.742 [307] <2> write_data: received first buffer (64512 bytes), 
begin writing data



I am wondering what file num =  Surely its not actually a file number 
and its only written 23 files in 2 hours.

I used the below for the duplication as the backups are multiplexed.

bpduplicate -dp dupe_monthly -dstunit L1000 -hoursago 22 -sl Monthly 
-mpx -L /var/log/move-dupe.log &

Is it worth be canceling and just doing another full backup or do people 
think the duplication will complete?

Thanks

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