BackupViaDDsnapshot - Revision history

Drew: fix syntax for BackupViaDDsnapshot

2018-01-25T07:32:18Z

fix syntax for BackupViaDDsnapshot

← Older revision		Revision as of 01:32, 25 January 2018
Line 3:		Line 3:
	* http://www.linux-usb.org/FAQ.html#i5		* http://www.linux-usb.org/FAQ.html#i5
	* http://marc-abramowitz.com/archives/2007/02/17/getting-good-performance-out-of-usb-hard-drives-in-linux/		* http://marc-abramowitz.com/archives/2007/02/17/getting-good-performance-out-of-usb-hard-drives-in-linux/
	<~~pre~~># Speed up writes on USB HD		<syntaxhighlight lang=bash>
	echo 1024 > /sys/block/sdf/device/max_sectors;</~~pre~~>		# Speed up writes on USB HD
			echo 1024 > /sys/block/sdf/device/max_sectors;
			</syntaxhighlight>

	==Check Bus Speed USB Peripherals==		==Check Bus Speed USB Peripherals==
	<~~pre~~>[root@drewserv devices]# grep "" /sys/bus/usb/devices/*/speed		<syntaxhighlight lang=bash>
			[root@drewserv devices]# grep "" /sys/bus/usb/devices/*/speed
	/sys/bus/usb/devices/1-1/speed:480		/sys/bus/usb/devices/1-1/speed:480
	/sys/bus/usb/devices/3-2/speed:1.5		/sys/bus/usb/devices/3-2/speed:1.5
Line 14:		Line 17:
	/sys/bus/usb/devices/usb3/speed:12		/sys/bus/usb/devices/usb3/speed:12
	/sys/bus/usb/devices/usb4/speed:12		/sys/bus/usb/devices/usb4/speed:12
	/sys/bus/usb/devices/usb5/speed:12</~~pre~~>		/sys/bus/usb/devices/usb5/speed:12
			</syntaxhighlight>

	== Creating / copying snapshot ==		== Creating / copying snapshot ==
	<~~pre~~>[drew@drewserv ~]$ sudo lvcreate -L10G -s -n tmpbkup /dev/vg-raid5/lv-raid5		<syntaxhighlight lang=bash>
			[drew@drewserv ~]$ sudo lvcreate -L10G -s -n tmpbkup /dev/vg-raid5/lv-raid5
	Logical volume "tmpbkup" created		Logical volume "tmpbkup" created

Line 58:		Line 63:
	lv_root vg_drewserv -wi-ao 50.00g		lv_root vg_drewserv -wi-ao 50.00g
	lv_swap vg_drewserv -wi-ao 3.94g		lv_swap vg_drewserv -wi-ao 3.94g
	</~~pre~~>		</syntaxhighlight>

	== USB Hard Drive Perf Tests ==		== USB Hard Drive Perf Tests ==
	<~~pre~~>		<syntaxhighlight lang=bash>
	[root@drewserv backup]# dd if=dell-desktop7.22.2010.tar.gz of=/dev/null bs=4M		[root@drewserv backup]# dd if=dell-desktop7.22.2010.tar.gz of=/dev/null bs=4M
	6321+1 records in		6321+1 records in
Line 78:		Line 83:
	2500+0 records out		2500+0 records out
	10485760000 bytes (10 GB) copied, 264.512 s, 39.6 MB/s		10485760000 bytes (10 GB) copied, 264.512 s, 39.6 MB/s
	</~~pre~~>		</syntaxhighlight>

Drew at 01:44, 28 July 2011

2011-07-28T01:44:23Z

@@ Line 5: / Line 5: @@
 <pre># Speed up writes on USB HD
 echo 1024 > /sys/block/sdf/device/max_sectors;</pre>
 == Creating / copying snapshot ==

Drew at 10:20, 25 July 2011

2011-07-25T10:20:54Z

← Older revision		Revision as of 04:20, 25 July 2011
Line 1:		Line 1:
	==Speedup USB HD==		==Speedup USB HD==
	Apped to /etc/sysctl.conf		Apped to /etc/sysctl.conf per;
			* http://www.linux-usb.org/FAQ.html#i5
			* http://marc-abramowitz.com/archives/2007/02/17/getting-good-performance-out-of-usb-hard-drives-in-linux/
	<pre># Speed up writes on USB HD		<pre># Speed up writes on USB HD
	echo 1024 > /sys/block/sdf/device/max_sectors;</pre>		echo 1024 > /sys/block/sdf/device/max_sectors;</pre>

Drew at 07:46, 25 July 2011

2011-07-25T07:46:16Z

← Older revision		Revision as of 01:46, 25 July 2011
Line 1:		Line 1:
			==Speedup USB HD==
			Apped to /etc/sysctl.conf
			<pre># Speed up writes on USB HD
			echo 1024 > /sys/block/sdf/device/max_sectors;</pre>

	== Creating / copying snapshot ==		== Creating / copying snapshot ==
	<pre>[drew@drewserv ~]$ sudo lvcreate -L10G -s -n tmpbkup /dev/vg-raid5/lv-raid5		<pre>[drew@drewserv ~]$ sudo lvcreate -L10G -s -n tmpbkup /dev/vg-raid5/lv-raid5

Drew at 00:27, 25 July 2011

2011-07-25T00:27:03Z

@@ Line 1: / Line 1: @@
 <pre>[drew@drewserv ~]$ sudo lvcreate -L10G -s -n tmpbkup /dev/vg-raid5/lv-raid5
    Logical volume "tmpbkup" created
@@ Line 40: / Line 41: @@
    lv_root   vg_drewserv -wi-ao  50.00g
    lv_swap   vg_drewserv -wi-ao   3.94g
 </pre>

Drew: Created page with "

[drew@drewserv ~]$ sudo lvcreate -L10G -s -n tmpbkup /dev/vg-raid5/lv-raid5    Logical volume "tmpbkup" created  [drew@drewserv ~]$ sudo lvs   LV        VG          Attr   L..."

2011-07-25T00:12:08Z

Created page with "<pre>[drew@drewserv ~]$ sudo lvcreate -L10G -s -n tmpbkup /dev/vg-raid5/lv-raid5 Logical volume "tmpbkup" created [drew@drewserv ~]$ sudo lvs LV VG Attr L..."

New page

<pre>[drew@drewserv ~]$ sudo lvcreate -L10G -s -n tmpbkup /dev/vg-raid5/lv-raid5
Logical volume "tmpbkup" created

[drew@drewserv ~]$ sudo lvs
LV VG Attr LSize Origin Snap% Move Log Copy% Convert
lv-backup vg-backup -wi-ao 698.63g
lv-raid5 vg-raid5 owi-ao 698.63g
tmpbkup vg-raid5 swi-ao 10.00g lv-raid5 0.13
lv_home vg_drewserv -wi-ao 178.44g
lv_root vg_drewserv -wi-ao 50.00g
lv_swap vg_drewserv -wi-ao 3.94g

[root@drewserv ~]# date; dcfldd if=/dev/vg-raid5/tmpbkup of=/dev/vg-backup/lv-backup bs=4M; date
Sun Jul 24 05:29:04 MDT 2011
178688 blocks (714752Mb) written.
178850+0 records in
178850+0 records out
Sun Jul 24 12:14:20 MDT 2011

[root@drewserv ~]# tune2fs -U random /dev/vg-backup/lv-backup
tune2fs 1.41.14 (22-Dec-2010)

[root@drewserv etc]# mount /dev/vg-backup/lv-backup /mnt/backup

[root@drewserv backup]# ls -al /mnt/backup
total 33839996
drwxr-xr-x. 12 root root 4096 Jul 24 05:01 .
drwxr-xr-x. 5 root root 4096 Jul 23 19:05 ..
drwxr-xr-x. 5 user user 4096 Jul 24 00:06 backup

[root@drewserv ~]# lvremove /dev/vg-raid5/tmpbkup
Do you really want to remove active logical volume tmpbkup? [y/n]: y
Logical volume "tmpbkup" successfully removed

[drew@drewserv ~]$ sudo lvs
LV VG Attr LSize Origin Snap% Move Log Copy% Convert
lv-backup vg-backup -wi-ao 698.63g
lv-raid5 vg-raid5 -wi-ao 698.63g
lv_home vg_drewserv -wi-ao 178.44g
lv_root vg_drewserv -wi-ao 50.00g
lv_swap vg_drewserv -wi-ao 3.94g
</pre>