Re: tar's default block size & shoe-shinning

Joshua Baker-LePain <jlb17 AT duke DOT edu> a écrit sur 19/06/2006 16:59:58 : > On Mon, 19 Jun 2006 at 4:31pm, Cyrille Bollu wrote > > > But, when we purchased the backup server I agreed to follow my boss' > > solution (it's always him you known ;-p) to buy that cheaper server with > > maximum 1,5TB RAID5 (6*300GB) instead of that nice DAS with up to 3,9TB > > RAID5. So, to save space I created one big volume containing both the OS > > and the data. > > What type of drives, and what RAID card? What OS/distro are we talking, > and what SCSI card for the tape drive? >
The server is a Dell PowerEdge 2850 with 2 Intel Xeon 3GHz processors and 8GB RAM.

I have one big RAID5 array made of 6 Seagate Cheetah ST3300007LC 10Krpm 300GB (http://support.euro.dell.com/support/edocs/storage/p76311sc/intro.htm). All connected to channel 0 of a Dell PowerEdge Expandable RAID Controller 4e/Di (http://support.euro.dell.com/support/edocs/storage/RAID/perc4e/en/ug/index.htm). See hereunder for more info.

I'm running Linux RedHat ES 3.3.

Nothing is running (except OpenManage (noweb)) when Amanda runs.

Does this speak to you?

Cyrille

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[root@srv-fhq-bkp scsi]# lspci
00:00.0 Host bridge: Intel Corp. Server Memory Controller Hub (rev 09)
00:02.0 PCI bridge: Intel Corp. Memory Controller Hub PCI Express Port A0 (rev 09)
00:04.0 PCI bridge: Intel Corp. Memory Controller Hub PCI Express Port B0 (rev 09)
00:05.0 PCI bridge: Intel Corp. Memory Controller Hub PCI Express Port B1 (rev 09)
00:06.0 PCI bridge: Intel Corp. Memory Controller Hub PCI Express Port C0 (rev 09)
00:1d.0 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #1 (rev 02)
00:1d.1 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #2 (rev 02)
00:1d.2 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB UHCI #3 (rev 02)
00:1d.7 USB Controller: Intel Corp. 82801EB/ER (ICH5/ICH5R) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corp. 82801BA/CA/DB/EB/ER Hub interface to PCI Bridge (rev c2)
00:1f.0 ISA bridge: Intel Corp. 82801EB/ER (ICH5/ICH5R) LPC Bridge (rev 02)
00:1f.1 IDE interface: Intel Corp. 82801EB/ER (ICH5/ICH5R) Ultra ATA 100 Storage Controller (rev 02)
01:00.0 PCI bridge: Intel Corp. 80332 [Dobson] I/O processor (rev 06)
01:00.2 PCI bridge: Intel Corp. 80332 [Dobson] I/O processor (rev 06)
02:0e.0 RAID bus controller: Dell PowerEdge Expandable RAID controller 4 (rev 06)
05:00.0 PCI bridge: Intel Corp. PCI Bridge Hub A (rev 09)
05:00.2 PCI bridge: Intel Corp. PCI Bridge Hub B (rev 09)
06:07.0 Ethernet controller: Intel Corp. 82541GI/PI Gigabit Ethernet Controller (rev 05)
07:08.0 Ethernet controller: Intel Corp. 82541GI/PI Gigabit Ethernet Controller (rev 05)
08:00.0 PCI bridge: Intel Corp. PCI Bridge Hub A (rev 09)
08:00.2 PCI bridge: Intel Corp. PCI Bridge Hub B (rev 09)
09:04.0 SCSI storage controller: Adaptec AHA-3960D / AIC-7899A U160/m (rev 01)
09:04.1 SCSI storage controller: Adaptec AHA-3960D / AIC-7899A U160/m (rev 01)
0a:03.0 Ethernet controller: Intel Corp. 82546EB Gigabit Ethernet Controller (Copper) (rev 01)
0a:03.1 Ethernet controller: Intel Corp. 82546EB Gigabit Ethernet Controller (Copper) (rev 01)
0b:0d.0 VGA compatible controller: ATI Technologies Inc Radeon RV100 QY [Radeon 7000/VE]
[root@srv-fhq-bkp scsi]#

[root@srv-fhq-bkp scsi]# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 06 Lun: 00
Vendor: IBM Model: ULTRIUM-TD3 Rev: 5480
Type: Sequential-Access ANSI SCSI revision: 03
Host: scsi2 Channel: 00 Id: 00 Lun: 00
Vendor: MegaRAID Model: LD 0 RAID5 1430G Rev: 521S
Type: Direct-Access ANSI SCSI revision: 02
Host: scsi2 Channel: 04 Id: 06 Lun: 00
Vendor: PE/PV Model: 1x6 SCSI BP Rev: 1.0
Type: Processor ANSI SCSI revision: 02
[root@srv-fhq-bkp scsi]#

[root@srv-fhq-bkp scsi]#dmesg
<*snip*>
SCSI subsystem driver Revision: 1.00
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
<Adaptec 3960D Ultra160 SCSI adapter>
aic7899: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs

scsi1 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
<Adaptec 3960D Ultra160 SCSI adapter>
aic7899: Ultra160 Wide Channel B, SCSI Id=7, 32/253 SCBs

blk: queue f77c5618, I/O limit 524287Mb (mask 0x7fffffffff)
(scsi0:A:6): 160.000MB/s transfers (80.000MHz DT, offset 127, 16bit)
Vendor: IBM Model: ULTRIUM-TD3 Rev: 5480
Type: Sequential-Access ANSI SCSI revision: 03
blk: queue f77c5418, I/O limit 524287Mb (mask 0x7fffffffff)
megaraid: v2.10.6-RH1 (Release Date: Fri May 14 08:36:49 EDT 2004)
megaraid: found 0x1028:0x0013:bus 2:slot 14:func 0
scsi2:Found MegaRAID controller at 0xf8873000, IRQ:38
megaraid: [521S:H430] detected 1 logical drives.
megaraid: supports extended CDBs.
megaraid: channel[0] is raid.
megaraid: channel[1] is scsi.
scsi2 : LSI Logic MegaRAID 521S 254 commands 16 targs 5 chans 7 luns
scsi2: scanning scsi channel 0 for logical drives.
Vendor: MegaRAID Model: LD 0 RAID5 1430G Rev: 521S
Type: Direct-Access ANSI SCSI revision: 02
blk: queue f77cca18, I/O limit 4294967295Mb (mask 0xffffffffffffffff)
scsi2: scanning scsi channel 1 for logical drives.
scsi2: scanning scsi channel 2 for logical drives.
scsi2: scanning scsi channel 4 [P0] for physical devices.
Vendor: PE/PV Model: 1x6 SCSI BP Rev: 1.0
Type: Processor ANSI SCSI revision: 02
blk: queue f77cc618, I/O limit 4294967295Mb (mask 0xffffffffffffffff)
scsi2: scanning scsi channel 5 [P1] for physical devices.
Attached scsi disk sda at scsi2, channel 0, id 0, lun 0
SCSI device sda: 2929459200 512-byte hdwr sectors (1499883 MB)
<*snip*>