Comments for Weblog for Thomas S. Iversen http://zensonic.dk Life, Universe and everything Fri, 13 Aug 2010 04:31:26 +0000 hourly 1 http://wordpress.org/?v=3.0 Comment on Non-HP harddrives in an HP MSA20 by zensonic http://zensonic.dk/?p=96&cpage=1#comment-18005 zensonic Fri, 13 Aug 2010 04:31:26 +0000 http://zensonic.dk/?p=96#comment-18005 You can't. At least not from the MSA20 side of things. It has a stupid limitation about logical volumes not being larger than 2TB. So you have to slice the disks into LUNs of up to 2TB in size in the MSA and combine them into a single LV on the host. Annoying to say the least. Personally I took another approach at the customer site. Their data means everything to them, so redundancy and raidlevels are what really matters. => ctrl ch=data show config MSA20 in data (sn: PAAACABMQUEFDA, csn: E03KMLJ18F ) array A (SATA, Unused Space: 103320 MB) logicaldrive 1 (1.6 TB, RAID 6 (ADG), OK) logicaldrive 2 (1.6 TB, RAID 6 (ADG), OK) logicaldrive 3 (1.6 TB, RAID 6 (ADG), OK) logicaldrive 4 (1.6 TB, RAID 6 (ADG), OK) logicaldrive 5 (1.6 TB, RAID 6 (ADG), OK) physicaldrive 1:1 (box 1:bay 1, SATA, 1000.2 GB, OK) physicaldrive 1:2 (box 1:bay 2, SATA, 1000.2 GB, OK) physicaldrive 1:3 (box 1:bay 3, SATA, 1000.2 GB, OK) physicaldrive 1:4 (box 1:bay 4, SATA, 1000.2 GB, OK) physicaldrive 1:5 (box 1:bay 5, SATA, 1000.2 GB, OK) physicaldrive 1:6 (box 1:bay 6, SATA, 1000.2 GB, OK) physicaldrive 1:7 (box 1:bay 7, SATA, 1000.2 GB, OK) physicaldrive 1:8 (box 1:bay 8, SATA, 1000.2 GB, OK) physicaldrive 1:9 (box 1:bay 9, SATA, 1000.2 GB, OK) physicaldrive 1:10 (box 1:bay 10, SATA, 1000.2 GB, OK) physicaldrive 1:11 (box 1:bay 11, SATA, 1000.2 GB, OK) physicaldrive 1:12 (box 1:bay 12, SATA, 1000.2 GB, OK, spare) So raid-6, with a spare, that is 3 disks out of 12 is for redundancy purposes. The last 9 disks are sliced into 1.6TB LUNs and presented to the host. On the host side I use LVM to combine it directly. In a JBOD setup, it would use the md driver in linux. In my end: Finding volume group "alt" --- Volume group --- VG Name alt System ID Format lvm2 Metadata Areas 5 Metadata Sequence No 6 VG Access read/write VG Status resizable MAX LV 0 Cur LV 3 Open LV 3 Max PV 0 Cur PV 5 Act PV 5 VG Size 8,11 TB PE Size 4,00 MB Total PE 2125000 Alloc PE / Size 2073800 / 7,91 TB Free PE / Size 51200 / 200,00 GB VG UUID HChKy6-EKi7-uRzo-pFOi-uI9c-Qxn7-aAXJbU --- Logical volume --- LV Name /dev/alt/data VG Name alt LV UUID 9aeh2b-JG95-aA1F-SL35-iTlr-4ZUZ-k9yn3c LV Write Access read/write LV Status available # open 1 LV Size 2,00 TB Current LE 524288 Segments 2 Allocation inherit Read ahead sectors 0 Block device 253:0 --- Logical volume --- LV Name /dev/alt/permanent_to_tape VG Name alt LV UUID BW3WMN-27Lu-GGH5-2Cox-eJuQ-rpQT-E8jYEc LV Write Access read/write LV Status available # open 1 LV Size 200,00 GB Current LE 51200 Segments 1 Allocation inherit Read ahead sectors 0 Block device 253:1 --- Logical volume --- LV Name /dev/alt/home VG Name alt LV UUID F8m989-K1UI-ypiA-TLa8-T9nK-kl21-reLhlP LV Write Access read/write LV Status available # open 1 LV Size 5,72 TB Current LE 1498312 Segments 4 Allocation inherit Read ahead sectors 0 Block device 253:2 --- Physical volumes --- PV Name /dev/cciss/c0d5 PV UUID eMkVxm-A792-ccvU-T8Kh-XfpB-yLEL-ZNZuPu PV Status allocatable Total PE / Free PE 425000 / 0 PV Name /dev/cciss/c0d6 PV UUID qMFPjc-CQBf-tYa3-DeOF-1Q8m-5f0B-nZmRUf PV Status allocatable Total PE / Free PE 425000 / 51200 PV Name /dev/cciss/c0d7 PV UUID ImjS25-M24u-o0pK-2Uss-2YMm-2RjY-xl5V4s PV Status allocatable Total PE / Free PE 425000 / 0 PV Name /dev/cciss/c0d8 PV UUID bn9k8V-1ZVu-YvzT-B65R-UhzN-Hj8k-sKvwyQ PV Status allocatable Total PE / Free PE 425000 / 0 PV Name /dev/cciss/c0d9 PV UUID vwCnyZ-qZ3G-sERD-mKr5-zFwP-SbNo-SHC6hY PV Status allocatable Total PE / Free PE 425000 / 0 Hope you got some ideas on how to proceed. The short answer: the MSA20 is limited. You have to work around a 2TB LV limit. But hey, it is cheap storage ;-) You can’t. At least not from the MSA20 side of things. It has a stupid limitation about logical volumes not being larger than 2TB. So you have to slice the disks into LUNs of up to 2TB in size in the MSA and combine them into a single LV on the host. Annoying to say the least.

Personally I took another approach at the customer site. Their data means everything to them, so redundancy and raidlevels are what really matters.

=> ctrl ch=data show config

MSA20 in data (sn: PAAACABMQUEFDA, csn: E03KMLJ18F )

array A (SATA, Unused Space: 103320 MB)

logicaldrive 1 (1.6 TB, RAID 6 (ADG), OK)
logicaldrive 2 (1.6 TB, RAID 6 (ADG), OK)
logicaldrive 3 (1.6 TB, RAID 6 (ADG), OK)
logicaldrive 4 (1.6 TB, RAID 6 (ADG), OK)
logicaldrive 5 (1.6 TB, RAID 6 (ADG), OK)

physicaldrive 1:1 (box 1:bay 1, SATA, 1000.2 GB, OK)
physicaldrive 1:2 (box 1:bay 2, SATA, 1000.2 GB, OK)
physicaldrive 1:3 (box 1:bay 3, SATA, 1000.2 GB, OK)
physicaldrive 1:4 (box 1:bay 4, SATA, 1000.2 GB, OK)
physicaldrive 1:5 (box 1:bay 5, SATA, 1000.2 GB, OK)
physicaldrive 1:6 (box 1:bay 6, SATA, 1000.2 GB, OK)
physicaldrive 1:7 (box 1:bay 7, SATA, 1000.2 GB, OK)
physicaldrive 1:8 (box 1:bay 8, SATA, 1000.2 GB, OK)
physicaldrive 1:9 (box 1:bay 9, SATA, 1000.2 GB, OK)
physicaldrive 1:10 (box 1:bay 10, SATA, 1000.2 GB, OK)
physicaldrive 1:11 (box 1:bay 11, SATA, 1000.2 GB, OK)
physicaldrive 1:12 (box 1:bay 12, SATA, 1000.2 GB, OK, spare)

So raid-6, with a spare, that is 3 disks out of 12 is for redundancy purposes. The last 9 disks are sliced into 1.6TB LUNs and presented to the host. On the host side I use LVM to combine it directly. In a JBOD setup, it would use the md driver in linux. In my end:

Finding volume group “alt”
— Volume group —
VG Name alt
System ID
Format lvm2
Metadata Areas 5
Metadata Sequence No 6
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 5
Act PV 5
VG Size 8,11 TB
PE Size 4,00 MB
Total PE 2125000
Alloc PE / Size 2073800 / 7,91 TB
Free PE / Size 51200 / 200,00 GB
VG UUID HChKy6-EKi7-uRzo-pFOi-uI9c-Qxn7-aAXJbU

— Logical volume —
LV Name /dev/alt/data
VG Name alt
LV UUID 9aeh2b-JG95-aA1F-SL35-iTlr-4ZUZ-k9yn3c
LV Write Access read/write
LV Status available
# open 1
LV Size 2,00 TB
Current LE 524288
Segments 2
Allocation inherit
Read ahead sectors 0
Block device 253:0

— Logical volume —
LV Name /dev/alt/permanent_to_tape
VG Name alt
LV UUID BW3WMN-27Lu-GGH5-2Cox-eJuQ-rpQT-E8jYEc
LV Write Access read/write
LV Status available
# open 1
LV Size 200,00 GB
Current LE 51200
Segments 1
Allocation inherit
Read ahead sectors 0
Block device 253:1

— Logical volume —
LV Name /dev/alt/home
VG Name alt
LV UUID F8m989-K1UI-ypiA-TLa8-T9nK-kl21-reLhlP
LV Write Access read/write
LV Status available
# open 1
LV Size 5,72 TB
Current LE 1498312
Segments 4
Allocation inherit
Read ahead sectors 0
Block device 253:2

— Physical volumes —
PV Name /dev/cciss/c0d5
PV UUID eMkVxm-A792-ccvU-T8Kh-XfpB-yLEL-ZNZuPu
PV Status allocatable
Total PE / Free PE 425000 / 0

PV Name /dev/cciss/c0d6
PV UUID qMFPjc-CQBf-tYa3-DeOF-1Q8m-5f0B-nZmRUf
PV Status allocatable
Total PE / Free PE 425000 / 51200

PV Name /dev/cciss/c0d7
PV UUID ImjS25-M24u-o0pK-2Uss-2YMm-2RjY-xl5V4s
PV Status allocatable
Total PE / Free PE 425000 / 0

PV Name /dev/cciss/c0d8
PV UUID bn9k8V-1ZVu-YvzT-B65R-UhzN-Hj8k-sKvwyQ
PV Status allocatable
Total PE / Free PE 425000 / 0

PV Name /dev/cciss/c0d9
PV UUID vwCnyZ-qZ3G-sERD-mKr5-zFwP-SbNo-SHC6hY
PV Status allocatable
Total PE / Free PE 425000 / 0

Hope you got some ideas on how to proceed. The short answer: the MSA20 is limited. You have to work around a 2TB LV limit. But hey, it is cheap storage ;-)

]]> Comment on Non-HP harddrives in an HP MSA20 by Stephen Wagner http://zensonic.dk/?p=96&cpage=1#comment-18000 Stephen Wagner Fri, 13 Aug 2010 00:17:31 +0000 http://zensonic.dk/?p=96#comment-18000 Just curious, have you done any other tweeks or tricks on this MSA20 unit? I'm still trying to figure out how to get the host OS to see the disks as JBOD. I'm still choked about the logical partition limit! Just curious, have you done any other tweeks or tricks on this MSA20 unit?

I’m still trying to figure out how to get the host OS to see the disks as JBOD. I’m still choked about the logical partition limit!

]]> Comment on Portforwarding on a zyxel device using the ZynOS cli by Dale Jackson http://zensonic.dk/?p=106&cpage=1#comment-17987 Dale Jackson Thu, 12 Aug 2010 11:35:51 +0000 http://zensonic.dk/?p=106#comment-17987 Brilliant. Thanks Brilliant. Thanks

]]> Comment on How to use a broken IBM Thinkpad T43 for something useful using puppy linux. by zensonic http://zensonic.dk/?p=153&cpage=1#comment-17625 zensonic Mon, 26 Jul 2010 09:36:09 +0000 http://zensonic.dk/?p=153#comment-17625 2. I lost interest in it when I was done. Turned out, that it was the <strong>process</strong> that was interesting. Surprised me as well ;-) 2. I lost interest in it when I was done. Turned out, that it was the process that was interesting. Surprised me as well ;-)

]]> Comment on How to use a broken IBM Thinkpad T43 for something useful using puppy linux. by Rasmus http://zensonic.dk/?p=153&cpage=1#comment-17624 Rasmus Mon, 26 Jul 2010 09:32:36 +0000 http://zensonic.dk/?p=153#comment-17624 Very nice guide. So now the question remains: 1. Will you use it? or 2. Will it be stowed away on top of a wardrobe? Very nice guide.

So now the question remains:

1. Will you use it?
or
2. Will it be stowed away on top of a wardrobe?

]]> Comment on Linux (ubuntu Karmic Koala) on HP Elitebook 2530p by zensonic http://zensonic.dk/?p=47&cpage=1#comment-16530 zensonic Wed, 19 May 2010 17:59:42 +0000 http://zensonic.dk/?p=47#comment-16530 I no longer have the laptop, but it did. I only tested it briefly using a KDE application of some sort. I no longer have the laptop, but it did. I only tested it briefly using a KDE application of some sort.

]]> Comment on Linux (ubuntu Karmic Koala) on HP Elitebook 2530p by dani http://zensonic.dk/?p=47&cpage=1#comment-16485 dani Wed, 12 May 2010 15:16:54 +0000 http://zensonic.dk/?p=47#comment-16485 Does the webcam works????If it does how?? Does the webcam works????If it does how??

]]> Comment on Updating system firmware on an IBM Thinkpad T43 using pxeboot by Søren http://zensonic.dk/?p=120&cpage=1#comment-16440 Søren Sat, 01 May 2010 05:56:44 +0000 http://zensonic.dk/?p=120#comment-16440 PXE is very useful. In my new company we use this stuff to do imaging and installation: http://ping.windowsdream.com/ Simple setup, free, and flexible PXE is very useful. In my new company we use this stuff to do imaging and installation: http://ping.windowsdream.com/
Simple setup, free, and flexible

]]> Comment on Here we go again… by Another take on no coke. « Weblog for Thomas S. Iversen http://zensonic.dk/?p=24&cpage=1#comment-16417 Another take on no coke. « Weblog for Thomas S. Iversen Sun, 22 Nov 2009 20:11:02 +0000 http://zensonic.dk/?p=24#comment-16417 [...] have tried before. In 2004 I had a period of 1.5 year where I did not drink coke. I tried again in February 2008, but that did not last that long. Now I am at it again. I would really like to quit that habit. I [...] [...] have tried before. In 2004 I had a period of 1.5 year where I did not drink coke. I tried again in February 2008, but that did not last that long. Now I am at it again. I would really like to quit that habit. I [...]

]]> Comment on Enabling 32MB memory on the linksys WRT54G router (version 2.2 XH only!) by Linux (ubuntu Karmic Koala) on HP Elitebook 2530p « Weblog for Thomas S. Iversen http://zensonic.dk/?p=19&cpage=1#comment-16416 Linux (ubuntu Karmic Koala) on HP Elitebook 2530p « Weblog for Thomas S. Iversen Sat, 24 Oct 2009 21:56:23 +0000 http://zensonic.dk/?p=19#comment-16416 [...] the wireless would not work with my wrt54g. It worked with other wifi hotspots. Symptoms were that the laptop could not a dhcplease from the [...] [...] the wireless would not work with my wrt54g. It worked with other wifi hotspots. Symptoms were that the laptop could not a dhcplease from the [...]

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