Re: raid or not raid
On Mon, May 28, 2007 at 12:11:24AM +0200, Gabriel Rossetti wrote: Jerry McAllister wrote: On Thu, May 24, 2007 at 06:07:58AM -0500, [EMAIL PROTECTED] wrote: On 24/05/07, kalin mintchev [EMAIL PROTECTED] wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... thanks. Lots of people here know plenty about RAID, but you don't provide very much information. If dmesg itself returns none of the startup info, you can look in /var/log/dmesg.[today|yesterday]. /usr/sbin/pciconf can tell you what controller(s) may be attached. A proper RAID will show up as a single device, just like any hard drive (but different). It does seem odd to me that a (supposed) RAID would show up as /dev/ad4. A hardware raid will look like any other drive to the system. If it is SATA raid, it should be adN It is it SAS raid, it should be daN. I have an SATA RAID controller (rocketraid 1640) and the drive shows up as daN and not adN That may be correct.You may need to address the raid as /dev/dann I have not had a SATA raid to see what it did. I just know that the SAS raid showed up as da-something (I don't have it available to check. jerry When I tested the controller without the driver loaded the DRIVES showed up ad adN, I put drives in caps because this is what I think is happening here, the driver isn't loaded and/or no RAID devices were created, so the RAID controller's drives just show up as drives and the controller is just used as a non-RAID controller. I suspect this is why he sees a second disk. Gabriel Some systems allow you to address the drives as either individual drives or as the raid - maybe until you have configured it or something. Anyway, on a Dell 2950 I could see both designations but figured out which was the raid and used it and all was fine. jerry Possibilities: Your RAID really is on /dev/ad4 and /dev/ad6 is something unexplained. Your RAID controller is unsupported in 5.x and not Doing The Right Thing but somehow still (kind of) working as a normal [S]ATA controller. Your RAID controller is unsupported in 5.x and your hosting company realised this and wired the shebang up as a normal [S]ATA controller because they couldn't get FreeBSD to install otherwise. There is a RAID controller and there are two disks connected to it, but the controller was not set up correctly. There is a RAID controller and there are two disks connected to some other controller which might lead to some interesting phone calls. Your remote hosting company put a RAID with two disks in some random machine and someone else is complaining on some other list about the inverse of your problem. -- -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: raid or not raid
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of kalin mintchev Sent: Thursday, May 24, 2007 4:11 PM To: freebsd-questions@freebsd.org Cc: [EMAIL PROTECTED] Subject: Re: raid or not raid On Thu, May 24, 2007 at 06:30:06AM -0400, kalin mintchev wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions My (VIA Tech V-RAID) raid disk shows up as ar0, although the ad4 and ad6 device nodes exist as well. Do you have the ataraid device in the kernel? yes. but isn;t that in by default in 5.4 GENERIC?! they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. Then ask them how it's done. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... If you're seeing an ad device, it's not RAID-ed, AFAIK. is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... It should be in /var/run/dmesg.boot. thanks. i guess that solves the ad6 mistery: atapci0: Intel ICH5 UDMA100 controller port 0xfc00-0xfc0f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0 ata0: channel #0 on atapci0 ata1: channel #1 on atapci0 atapci1: Intel ICH5 SATA150 controller port 0xcc80-0xcc8f,0xcc98-0xcc9b,0xcca0-0xcca7,0xccb0-0xccb3,0xccb8-0xccbf irq 18 at device 31.2 on pci0 ata2: channel #0 on atapci1 ata3: channel #1 on atapci1 . ad4: 152587MB WDC WD1600JS-75MHB0/03.01C03 [310019/16/63] at ata2-master SATA150 ad6: 152587MB WDC WD1600JS-75MHB0/03.01C03 [310019/16/63] at ata3-master SATA150 Mounting root from ufs:/dev/ad4s1a unless at device 31.2 on pci0 points to some RAID evidence - which i think it's false - than i read this as the ad6 disk sits there unused. am i right?! according to pciconf the atapci0 and atapci1 are differnt conrollers - EIDE and SATA so they can both be on pci0 as 31.1 and 31.2?! still no RAID though... I've come late to this thread but it's been interesting watching the speculation. Yes, they F'd up the installation. Badly. But you need to back up every scrap of data before trying to fix it. And use FBSD 6.2 on the next one. There's been lots of driver fixes in the ata driver that you want. ata raid should show all your data on AR not AD!! Here's an example from my mailserver: mail# cat /etc/fstab # DeviceMountpoint FStype Options Dump Pass# /dev/ar0s1b noneswapsw 0 0 /dev/ar0s1a / ufs rw 1 1 /dev/ar0s1e /usrufs rw 2 2 /dev/ar0s1d /varufs rw 2 2 /dev/acd0 /cdrom cd9660 ro,noauto 0 0 mail# Also, note the following. VERY important! When you go to setup a RAID mirror on a system, using a UDMA or SATA controller, (ie: NOT using a RAID5 card or SCSI card or some such) here is what you do. Start by going into the system RAID BIOS on boot, setup your RAID, then boot the install disk. Disks ad4 and ad6 will always show. If disk ar0 also shows, you can select ar0 and install to that. IF DISK ar0 DOES NOT SHOW, then your BIOS metadata isn't compatible. STOP. Reboot system. GO into BIOS. DESELECT and DISABLE the RAID. Boot system with install CD. At the screen that displays ad4 and ad6, select ad4. Select Minimal install. Don't bother answering any post install questions. Finish install. Reboot and login to root. At command line, issue command: atacontrol create RAID1 ad4 ad6 Immediately reboot from the install CD. Now, at the disk selection screen you will see ar0. Select this. Delete all existing partitions and recreate them, install the full system and your in business. Ted ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: raid or not raid
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of kalin mintchev Sent: Thursday, May 24, 2007 4:11 PM To: freebsd-questions@freebsd.org Cc: [EMAIL PROTECTED] Subject: Re: raid or not raid On Thu, May 24, 2007 at 06:30:06AM -0400, kalin mintchev wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions My (VIA Tech V-RAID) raid disk shows up as ar0, although the ad4 and ad6 device nodes exist as well. Do you have the ataraid device in the kernel? yes. but isn;t that in by default in 5.4 GENERIC?! they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. Then ask them how it's done. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... If you're seeing an ad device, it's not RAID-ed, AFAIK. is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... It should be in /var/run/dmesg.boot. thanks. i guess that solves the ad6 mistery: atapci0: Intel ICH5 UDMA100 controller port 0xfc00-0xfc0f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0 ata0: channel #0 on atapci0 ata1: channel #1 on atapci0 atapci1: Intel ICH5 SATA150 controller port 0xcc80-0xcc8f,0xcc98-0xcc9b,0xcca0-0xcca7,0xccb0-0xccb3,0xccb8-0xccbf irq 18 at device 31.2 on pci0 ata2: channel #0 on atapci1 ata3: channel #1 on atapci1 . ad4: 152587MB WDC WD1600JS-75MHB0/03.01C03 [310019/16/63] at ata2-master SATA150 ad6: 152587MB WDC WD1600JS-75MHB0/03.01C03 [310019/16/63] at ata3-master SATA150 Mounting root from ufs:/dev/ad4s1a unless at device 31.2 on pci0 points to some RAID evidence - which i think it's false - than i read this as the ad6 disk sits there unused. am i right?! according to pciconf the atapci0 and atapci1 are differnt conrollers - EIDE and SATA so they can both be on pci0 as 31.1 and 31.2?! still no RAID though... I've come late to this thread but it's been interesting watching the speculation. Yes, they F'd up the installation. Badly. But you need to back up every scrap of data before trying to fix it. And use FBSD 6.2 on the next one. There's been lots of driver fixes in the ata driver that you want. ata raid should show all your data on AR not AD!! Here's an example from my mailserver: mail# cat /etc/fstab # DeviceMountpoint FStype Options Dump Pass# /dev/ar0s1b noneswapsw 0 0 /dev/ar0s1a / ufs rw 1 1 /dev/ar0s1e /usrufs rw 2 2 /dev/ar0s1d /varufs rw 2 2 /dev/acd0 /cdrom cd9660 ro,noauto 0 0 mail# Also, note the following. VERY important! When you go to setup a RAID mirror on a system, using a UDMA or SATA controller, (ie: NOT using a RAID5 card or SCSI card or some such) here is what you do. Start by going into the system RAID BIOS on boot, setup your RAID, then boot the install disk. Disks ad4 and ad6 will always show. If disk ar0 also shows, you can select ar0 and install to that. IF DISK ar0 DOES NOT SHOW, then your BIOS metadata isn't compatible. STOP. Reboot system. GO into BIOS. DESELECT and DISABLE the RAID. Boot system with install CD. At the screen that displays ad4 and ad6, select ad4. Select Minimal install. Don't bother answering any post install questions. Finish install. Reboot and login to root. At command line, issue command: atacontrol create RAID1 ad4 ad6 Immediately reboot from the install CD. Now, at the disk selection screen you will see ar0. Select this. Delete all existing partitions and recreate them, install the full system and your in business. nice... thank you. i love condensed instructions. saves so much time... Ted ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: raid or not raid
-Original Message- From: kalin mintchev [mailto:[EMAIL PROTECTED] Sent: Sunday, May 27, 2007 5:04 AM To: Ted Mittelstaedt Cc: [EMAIL PROTECTED]; freebsd-questions@freebsd.org; [EMAIL PROTECTED] Subject: RE: raid or not raid -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of kalin mintchev Sent: Thursday, May 24, 2007 4:11 PM To: freebsd-questions@freebsd.org Cc: [EMAIL PROTECTED] Subject: Re: raid or not raid On Thu, May 24, 2007 at 06:30:06AM -0400, kalin mintchev wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions My (VIA Tech V-RAID) raid disk shows up as ar0, although the ad4 and ad6 device nodes exist as well. Do you have the ataraid device in the kernel? yes. but isn;t that in by default in 5.4 GENERIC?! they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. Then ask them how it's done. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... If you're seeing an ad device, it's not RAID-ed, AFAIK. is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... It should be in /var/run/dmesg.boot. thanks. i guess that solves the ad6 mistery: atapci0: Intel ICH5 UDMA100 controller port 0xfc00-0xfc0f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0 ata0: channel #0 on atapci0 ata1: channel #1 on atapci0 atapci1: Intel ICH5 SATA150 controller port 0xcc80-0xcc8f,0xcc98-0xcc9b,0xcca0-0xcca7,0xccb0-0xccb3,0xccb8-0xccbf irq 18 at device 31.2 on pci0 ata2: channel #0 on atapci1 ata3: channel #1 on atapci1 . ad4: 152587MB WDC WD1600JS-75MHB0/03.01C03 [310019/16/63] at ata2-master SATA150 ad6: 152587MB WDC WD1600JS-75MHB0/03.01C03 [310019/16/63] at ata3-master SATA150 Mounting root from ufs:/dev/ad4s1a unless at device 31.2 on pci0 points to some RAID evidence - which i think it's false - than i read this as the ad6 disk sits there unused. am i right?! according to pciconf the atapci0 and atapci1 are differnt conrollers - EIDE and SATA so they can both be on pci0 as 31.1 and 31.2?! still no RAID though... I've come late to this thread but it's been interesting watching the speculation. Yes, they F'd up the installation. Badly. But you need to back up every scrap of data before trying to fix it. And use FBSD 6.2 on the next one. There's been lots of driver fixes in the ata driver that you want. ata raid should show all your data on AR not AD!! Here's an example from my mailserver: mail# cat /etc/fstab # DeviceMountpoint FStype Options Dump Pass# /dev/ar0s1b noneswapsw 0 0 /dev/ar0s1a / ufs rw 1 1 /dev/ar0s1e /usrufs rw 2 2 /dev/ar0s1d /varufs rw 2 2 /dev/acd0 /cdrom cd9660 ro,noauto 0 0 mail# Also, note the following. VERY important! When you go to setup a RAID mirror on a system, using a UDMA or SATA controller, (ie: NOT using a RAID5 card or SCSI card or some such) here is what you do. Start by going into the system RAID BIOS on boot, setup your RAID, then boot the install disk. Disks ad4 and ad6 will always show. If disk ar0 also shows, you can select ar0 and install to that. IF DISK ar0 DOES NOT SHOW, then your BIOS metadata isn't compatible. STOP. Reboot system. GO into BIOS. DESELECT and DISABLE the RAID. Boot system with install CD. At the screen that displays ad4 and ad6, select ad4. Select Minimal install. Don't bother answering any post install questions. Finish install. Reboot and login to root. At command line, issue command: atacontrol create RAID1 ad4 ad6 Immediately reboot from the install CD. Now, at the disk selection screen you will see ar0. Select this. Delete all existing partitions and recreate them, install the full system and your in business. nice... thank you. i love condensed instructions. saves so much time... I should have mentioned that it also isn't necessary to put both disks on separate
Re: raid or not raid
Jerry McAllister wrote: On Thu, May 24, 2007 at 06:07:58AM -0500, [EMAIL PROTECTED] wrote: On 24/05/07, kalin mintchev [EMAIL PROTECTED] wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... thanks. Lots of people here know plenty about RAID, but you don't provide very much information. If dmesg itself returns none of the startup info, you can look in /var/log/dmesg.[today|yesterday]. /usr/sbin/pciconf can tell you what controller(s) may be attached. A proper RAID will show up as a single device, just like any hard drive (but different). It does seem odd to me that a (supposed) RAID would show up as /dev/ad4. A hardware raid will look like any other drive to the system. If it is SATA raid, it should be adN It is it SAS raid, it should be daN. I have an SATA RAID controller (rocketraid 1640) and the drive shows up as daN and not adN When I tested the controller without the driver loaded the DRIVES showed up ad adN, I put drives in caps because this is what I think is happening here, the driver isn't loaded and/or no RAID devices were created, so the RAID controller's drives just show up as drives and the controller is just used as a non-RAID controller. I suspect this is why he sees a second disk. Gabriel Some systems allow you to address the drives as either individual drives or as the raid - maybe until you have configured it or something. Anyway, on a Dell 2950 I could see both designations but figured out which was the raid and used it and all was fine. jerry Possibilities: Your RAID really is on /dev/ad4 and /dev/ad6 is something unexplained. Your RAID controller is unsupported in 5.x and not Doing The Right Thing but somehow still (kind of) working as a normal [S]ATA controller. Your RAID controller is unsupported in 5.x and your hosting company realised this and wired the shebang up as a normal [S]ATA controller because they couldn't get FreeBSD to install otherwise. There is a RAID controller and there are two disks connected to it, but the controller was not set up correctly. There is a RAID controller and there are two disks connected to some other controller which might lead to some interesting phone calls. Your remote hosting company put a RAID with two disks in some random machine and someone else is complaining on some other list about the inverse of your problem. -- -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On Thu, 24 May 2007 19:11:27 -0400 (EDT)
kalin mintchev [EMAIL PROTECTED] wrote:
unless at device 31.2 on pci0 points to some RAID evidence - which i
think it's false - than i read this as the ad6 disk sits there unused.
am i right?!
FWIW, you can use gstat (as root) to see if a certain geom device (eg, any
storage ) is being accessed, and its load.
the gstat is pretty cool. it shows something like this:
L(q) ops/sr/s kBps ms/rw/s kBps ms/w %busy Name
0 6 66278.5 0 00.05.0| ad4
0 6 66278.5 0 00.05.0| ad4s1
0 0 0 00.0 0 00.00.0| ad6
0 0 0 00.0 0 00.00.0| ad4s1a
0 0 0 00.0 0 00.00.0| ad4s1b
0 0 0 00.0 0 00.00.0| ad4s1c
0 0 0 00.0 0 00.00.0| ad4s1d
0 0 0 00.0 0 00.00.0| ad4s1e
0 0 0 00.0 0 00.00.0| ad4s1f
0 6 66278.5 0 00.05.0| ad4s1g
how come there is ad4s1b and ad4s1c when those names don't appear in the
fstab or df?
thanks
it works at leat on 6.x - not sure about 5.x.
_
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Re: raid or not raid
how come there is ad4s1b and ad4s1c when those names don't appear in the fstab or df? Very often ad4s1b will be the swap and ad4s1c the full slice. That is not an absolute rule, but it is very much recommended (at least for ad4s1c) to keep it equivalent to the full slice. Olivier ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
how come there is ad4s1b and ad4s1c when those names don't appear in the fstab or df? Very often ad4s1b will be the swap and ad4s1c the full slice. That is not an absolute rule, but it is very much recommended (at least for ad4s1c) to keep it equivalent to the full slice. but there is ad4s1 (without [a-g]) - isn;t that the full slice? or ad4s1 is more like ad4 (only one slice) - cause if you notice on the output i sent in the previous message the kBps value is the same for ad4, ad4s1 and ad4s1g which (to me) it basically says that only the g partition is being accessed at that moment. thanks... Olivier ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On Fri, 25 May 2007 15:41:28 +0700 (ICT)
Olivier Nicole [EMAIL PROTECTED] wrote:
how come there is ad4s1b and ad4s1c when those names don't appear in the
fstab or df?
because df shows mounted disks, and fstab what to mount. neither of them affect
b (usually swap) or c (as per Olivier below).
you can see b by using the right command, for example, swapinfo:
$ swapinfo
Device 1K-blocks UsedAvail Capacity
/dev/ad0s1b.eli 41943040 4194304 0%
( mine has .eli @ the end because it's an encrypted swap device).
Very often ad4s1b will be the swap and ad4s1c the full slice.
That is not an absolute rule, but it is very much recommended (at
least for ad4s1c) to keep it equivalent to the full slice.
indeed :) gstat shows them anyway because they are part of the GEOM subsys - u
just need the right tool to see them.
Regards,
B
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Re: raid or not raid
On Fri, 25 May 2007 04:37:25 -0400 (EDT)
kalin mintchev [EMAIL PROTECTED] wrote:
replying to your email down the thread...but using this content...
L(q) ops/sr/s kBps ms/rw/s kBps ms/w %busy Name
0 6 66278.5 0 00.05.0| ad4
The actual disk, ad4
0 6 66278.5 0 00.05.0| ad4s1
the first slice in the disk
0 0 0 00.0 0 00.00.0| ad6
0 0 0 00.0 0 00.00.0| ad4s1a
0 0 0 00.0 0 00.00.0| ad4s1b
0 0 0 00.0 0 00.00.0| ad4s1c
0 0 0 00.0 0 00.00.0| ad4s1d
0 0 0 00.0 0 00.00.0| ad4s1e
0 0 0 00.0 0 00.00.0| ad4s1f
0 6 66278.5 0 00.05.0| ad4s1g
the g partition in slice 1 of disk ad4.
They all get used (from the GEOM POV) when , for example, userland access the
fs located in ad4s1g .
clear as mud? ;)
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Your reasoning is excellent -- it's only your basic assumptions that are wrong.
I speak for myself, not my employer. Contents may be hot. Slippery when wet.
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Re: raid or not raid
On Fri, 25 May 2007 04:37:25 -0400 (EDT)
kalin mintchev [EMAIL PROTECTED] wrote:
replying to your email down the thread...but using this content...
L(q) ops/sr/s kBps ms/rw/s kBps ms/w %busy Name
0 6 66278.5 0 00.05.0| ad4
The actual disk, ad4
0 6 66278.5 0 00.05.0| ad4s1
the first slice in the disk
0 0 0 00.0 0 00.00.0| ad6
0 0 0 00.0 0 00.00.0| ad4s1a
0 0 0 00.0 0 00.00.0| ad4s1b
0 0 0 00.0 0 00.00.0| ad4s1c
0 0 0 00.0 0 00.00.0| ad4s1d
0 0 0 00.0 0 00.00.0| ad4s1e
0 0 0 00.0 0 00.00.0| ad4s1f
0 6 66278.5 0 00.05.0| ad4s1g
the g partition in slice 1 of disk ad4.
They all get used (from the GEOM POV) when , for example, userland access
the fs located in ad4s1g .
clear as mud? ;)
that's what i meant... well... cool.. thanks to all...
now i have to make some 'interesting' phone calls
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Your reasoning is excellent -- it's only your basic assumptions that are
wrong.
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Re: raid or not raid
so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... thanks. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On 24/05/07, kalin mintchev [EMAIL PROTECTED] wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... thanks. Lots of people here know plenty about RAID, but you don't provide very much information. If dmesg itself returns none of the startup info, you can look in /var/log/dmesg.[today|yesterday]. /usr/sbin/pciconf can tell you what controller(s) may be attached. A proper RAID will show up as a single device, just like any hard drive (but different). It does seem odd to me that a (supposed) RAID would show up as /dev/ad4. Possibilities: Your RAID really is on /dev/ad4 and /dev/ad6 is something unexplained. Your RAID controller is unsupported in 5.x and not Doing The Right Thing but somehow still (kind of) working as a normal [S]ATA controller. Your RAID controller is unsupported in 5.x and your hosting company realised this and wired the shebang up as a normal [S]ATA controller because they couldn't get FreeBSD to install otherwise. There is a RAID controller and there are two disks connected to it, but the controller was not set up correctly. There is a RAID controller and there are two disks connected to some other controller which might lead to some interesting phone calls. Your remote hosting company put a RAID with two disks in some random machine and someone else is complaining on some other list about the inverse of your problem. -- -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
[EMAIL PROTECTED] wrote: On 24/05/07, kalin mintchev [EMAIL PROTECTED] wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... thanks. Lots of people here know plenty about RAID, but you don't provide very much information. If dmesg itself returns none of the startup info, you can look in /var/log/dmesg.[today|yesterday]. /usr/sbin/pciconf can tell you what controller(s) may be attached. A proper RAID will show up as a single device, just like any hard drive (but different). It does seem odd to me that a (supposed) RAID would show up as /dev/ad4. Possibilities: Your RAID really is on /dev/ad4 and /dev/ad6 is something unexplained. Your RAID controller is unsupported in 5.x and not Doing The Right Thing but somehow still (kind of) working as a normal [S]ATA controller. Your RAID controller is unsupported in 5.x and your hosting company realised this and wired the shebang up as a normal [S]ATA controller because they couldn't get FreeBSD to install otherwise. There is a RAID controller and there are two disks connected to it, but the controller was not set up correctly. There is a RAID controller and there are two disks connected to some other controller which might lead to some interesting phone calls. Your remote hosting company put a RAID with two disks in some random machine and someone else is complaining on some other list about the inverse of your problem. Also what type of RAID? If it's Hardware RAID _and_ it's using a 3ware card, you can install tw_cli from /usr/ports/sysutils. It's a nice little utility and will show you the status of your units/ports/drives and how many drives you have on that controller. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... thanks. Lots of people here know plenty about RAID, but you don't provide very much information. ok. fair enough... thanks. If dmesg itself returns none of the startup info, you can look in /var/log/dmesg.[today|yesterday]. as i mentioned the machine has been up without reboot for almost 2 years... /usr/sbin/pciconf can tell you what controller(s) may be attached. right, i forgot about pciconf... i can see one SATA and one EIDE controllers. both ATA subclass. no RAID controllers. nothing about RAID anywhere from pciconf A proper RAID will show up as a single device, just like any hard drive (but different). what do you mean by 'but different'? the actual df output lists this: # df -h Filesystem SizeUsed Avail Capacity Mounted on /dev/ad4s1a290M 81M186M30%/ devfs 1.0K1.0K 0B 100%/dev /dev/ad4s1d989M 50K910M 0%/tmp /dev/ad4s1f 15G5.0G8.4G37%/usr /dev/ad4s1e989M 33M877M 4%/var /dev/ad4s1g126G 90G 25G78%/work i read it as one disk - ad4 - with one big slice 1 and 5 partitions. am i wrong? fstab shows same devices. It does seem odd to me that a (supposed) RAID would show up as /dev/ad4. please elaborate. do you mean that the raided disks will have another id/name rather than 'ad'? Possibilities: Your RAID really is on /dev/ad4 and /dev/ad6 is something unexplained. Your RAID controller is unsupported in 5.x and not Doing The Right Thing but somehow still (kind of) working as a normal [S]ATA controller. Your RAID controller is unsupported in 5.x and your hosting company realised this and wired the shebang up as a normal [S]ATA controller because they couldn't get FreeBSD to install otherwise. There is a RAID controller and there are two disks connected to it, but the controller was not set up correctly. There is a RAID controller and there are two disks connected to some other controller which might lead to some interesting phone calls. Your remote hosting company put a RAID with two disks in some random machine and someone else is complaining on some other list about the inverse of your problem. ok. i guess i'd explore the 'interesting phone calls' one. if it doesn;t walk like a duck and it doesn;t quack like a duck it must be some other bird/thing... -- -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
Also what type of RAID? If it's Hardware RAID _and_ it's using a 3ware card, doubt it. i don't see anything that ponts to that in the pciconf output.. you can install tw_cli from /usr/ports/sysutils. It's a nice little utility and will show you the status of your units/ports/drives and how many drives you have on that controller. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
At 05:30 AM 5/24/2007, kalin mintchev wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... thanks. It is likely a hardware raid setup in the hardware BEFORE FreeBSD was installed. In this type of setup the RAID array just looks like a regular hard disk to the OS. -Derek -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks transtec Computers for their support. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On 24/05/07, kalin mintchev [EMAIL PROTECTED] wrote: i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... thanks. . . . A proper RAID will show up as a single device, just like any hard drive (but different). what do you mean by 'but different'? the actual df output lists this: # df -h Filesystem SizeUsed Avail Capacity Mounted on /dev/ad4s1a290M 81M186M30%/ devfs 1.0K1.0K 0B 100%/dev /dev/ad4s1d989M 50K910M 0%/tmp /dev/ad4s1f 15G5.0G8.4G37%/usr /dev/ad4s1e989M 33M877M 4%/var /dev/ad4s1g126G 90G 25G78%/work i read it as one disk - ad4 - with one big slice 1 and 5 partitions. am i wrong? fstab shows same devices. It does seem odd to me that a (supposed) RAID would show up as /dev/ad4. please elaborate. do you mean that the raided disks will have another id/name rather than 'ad'? Not knowing what hardware you have, I would still hazard that a RAID device will not show up as /dev/adN. I would guess that the RAID controllers that use cam might have their devices called by the /dev/daN convention, but I don't know that. ok. i guess i'd explore the 'interesting phone calls' one. if it doesn;t walk like a duck and it doesn;t quack like a duck it must be some other bird/thing... I would agree with that. -- -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On 24/05/07, Derek Ragona [EMAIL PROTECTED] wrote: At 05:30 AM 5/24/2007, kalin mintchev wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... thanks. It is likely a hardware raid setup in the hardware BEFORE FreeBSD was installed. In this type of setup the RAID array just looks like a regular hard disk to the OS. Now I'm curious: are there RAID controllers that FreeBSD just sees as a [S]ATA controller with a [S]ATA disk attached? -- -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On Thu, May 24, 2007 at 06:30:06AM -0400, kalin mintchev wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions My (VIA Tech V-RAID) raid disk shows up as ar0, although the ad4 and ad6 device nodes exist as well. Do you have the ataraid device in the kernel? they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. Then ask them how it's done. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... If you're seeing an ad device, it's not RAID-ed, AFAIK. is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... It should be in /var/run/dmesg.boot. Roland -- R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) pgpibRZkquGy6.pgp Description: PGP signature
Re: raid or not raid
On 24/05/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: On 24/05/07, kalin mintchev [EMAIL PROTECTED] wrote: please elaborate. do you mean that the raided disks will have another id/name rather than 'ad'? Not knowing what hardware you have, I would still hazard that a RAID device will not show up as /dev/adN. I would guess that the RAID controllers that use cam might have their devices called by the /dev/daN convention, but I don't know that. One of those days here, sorry. The last RAID controller I used under FreeBSD was a compaq 2i which showed up as /dev/ida0 and (IIRC) the RAID was /dev/idad0 (so idad0s1a, idad0s1b, and so on). The disks were all SCSI, but since none of them were plugged into either of the (more normal) SCSI controllers there were no /dev/daN at all. -- -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On Thursday 24 May 2007 06:30:06 am kalin mintchev wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... My guess would be that it's not actually doing RAID. Real hardware RAID controllers either require their own drivers (twe, for instance shows disks as twed0, etc) or present disks as SCSI devices (e.g. da0). ATA pseudo-raid hardware supported by FreeBSD's ata(4) driver shows both the raw disks (ad4, ad6, etc) AND an array device like ar0. If RAID was set up in the BIOS then FreeBSD is probably ignoring it, perhaps because ata(4) doesn't grok the metadata format used by the RAID card. If I were you I would aim to migrate to gmirror RSN. JN ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On Thu, May 24, 2007 at 06:07:58AM -0500, [EMAIL PROTECTED] wrote: On 24/05/07, kalin mintchev [EMAIL PROTECTED] wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... thanks. Lots of people here know plenty about RAID, but you don't provide very much information. If dmesg itself returns none of the startup info, you can look in /var/log/dmesg.[today|yesterday]. /usr/sbin/pciconf can tell you what controller(s) may be attached. A proper RAID will show up as a single device, just like any hard drive (but different). It does seem odd to me that a (supposed) RAID would show up as /dev/ad4. A hardware raid will look like any other drive to the system. If it is SATA raid, it should be adN It is it SAS raid, it should be daN. Some systems allow you to address the drives as either individual drives or as the raid - maybe until you have configured it or something. Anyway, on a Dell 2950 I could see both designations but figured out which was the raid and used it and all was fine. jerry Possibilities: Your RAID really is on /dev/ad4 and /dev/ad6 is something unexplained. Your RAID controller is unsupported in 5.x and not Doing The Right Thing but somehow still (kind of) working as a normal [S]ATA controller. Your RAID controller is unsupported in 5.x and your hosting company realised this and wired the shebang up as a normal [S]ATA controller because they couldn't get FreeBSD to install otherwise. There is a RAID controller and there are two disks connected to it, but the controller was not set up correctly. There is a RAID controller and there are two disks connected to some other controller which might lead to some interesting phone calls. Your remote hosting company put a RAID with two disks in some random machine and someone else is complaining on some other list about the inverse of your problem. -- -- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On Thu, 24 May 2007, kalin mintchev wrote: Also what type of RAID? If it's Hardware RAID _and_ it's using a 3ware card, doubt it. i don't see anything that ponts to that in the pciconf output.. you can install tw_cli from /usr/ports/sysutils. It's a nice little utility and will show you the status of your units/ports/drives and how many drives you have on that controller. I have a similiar setup and some RAID controller will appear as ad4. I have RAID5 on a Dell PE2400. There is no doubt it's RAID since I put the disks in and formatted the array. So I am pretty sure :) This is a fairly old machine and FreeBSD does not support the controller in that to do any kind of repairs/changes to the array must be done via the BIOS. __ The dmesg: atapci0: GENERIC ATA controller port 0xfc00-0xfc0f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0 ata0: channel #0 on atapci0 ata1: channel #1 on atapci0 atapci1: GENERIC ATA controller port 0xbc60-0xbc6f,0xbc78-0xbc7b,0xbc80-0xbc87,0xbc90-0xbc93,0xbc 98-0xbc9f irq 20 at device 31.2 on pci0 ata2: channel #0 on atapci1 ata3: channel #1 on atapci1 : ad4: 76293MB WDC WD800JD-75MSA2/10.01E03 [155009/16/63] at ata2-master UDMA33 Mounting root from ufs:/dev/ad4s3a ___ df Filesystem 1K-blocks UsedAvail Capacity Mounted on /dev/ad4s3a50763058900 40812013%/ devfs 110 100%/dev /dev/ad4s3g 61419970 44879206 1162716879%/home /dev/ad4s3e507630 70 466950 0%/tmp /dev/ad4s3f 6090094 1807368 379552032%/usr /dev/ad4s3d 3045006 1431302 137010451%/var That said it works perfectly (if invisibly). I have had single disk failures over the years and happily raid'ed on until I could swap out the disk and rebuild the array. Unfortunately the only thing hot about the swap was my blood pressure. So the answer is you can not tell that its not RAID. If you have a remote console and can see the BIOS messages on a reboot - that should clear it up I hope this helps ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On Thu, May 24, 2007 at 06:30:06AM -0400, kalin mintchev wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions My (VIA Tech V-RAID) raid disk shows up as ar0, although the ad4 and ad6 device nodes exist as well. Do you have the ataraid device in the kernel? yes. but isn;t that in by default in 5.4 GENERIC?! they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. Then ask them how it's done. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... If you're seeing an ad device, it's not RAID-ed, AFAIK. is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... It should be in /var/run/dmesg.boot. thanks. i guess that solves the ad6 mistery: atapci0: Intel ICH5 UDMA100 controller port 0xfc00-0xfc0f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0 ata0: channel #0 on atapci0 ata1: channel #1 on atapci0 atapci1: Intel ICH5 SATA150 controller port 0xcc80-0xcc8f,0xcc98-0xcc9b,0xcca0-0xcca7,0xccb0-0xccb3,0xccb8-0xccbf irq 18 at device 31.2 on pci0 ata2: channel #0 on atapci1 ata3: channel #1 on atapci1 . ad4: 152587MB WDC WD1600JS-75MHB0/03.01C03 [310019/16/63] at ata2-master SATA150 ad6: 152587MB WDC WD1600JS-75MHB0/03.01C03 [310019/16/63] at ata3-master SATA150 Mounting root from ufs:/dev/ad4s1a unless at device 31.2 on pci0 points to some RAID evidence - which i think it's false - than i read this as the ad6 disk sits there unused. am i right?! according to pciconf the atapci0 and atapci1 are differnt conrollers - EIDE and SATA so they can both be on pci0 as 31.1 and 31.2?! still no RAID though... thanks again... Roland -- R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On Thu, May 24, 2007 at 07:11:27PM -0400, kalin mintchev wrote: On Thu, May 24, 2007 at 06:30:06AM -0400, kalin mintchev wrote: so nobody on this list knows anything about raid? wrong list? hi all.. i have a box in a remote hosting facility that claims that the machine has two discs raided in it but df and fstab show only one disc with a bunch of slices. under devices there is another name - ad6 - but it's not mounted anywhere. the one i see both in df and the fstab is ad4 with one big slice and different partitions My (VIA Tech V-RAID) raid disk shows up as ar0, although the ad4 and ad6 device nodes exist as well. Do you have the ataraid device in the kernel? yes. but isn;t that in by default in 5.4 GENERIC?! they insist there are 2 raided discs in tha machine. the os is 5.4 and i think at that point the raid drivers were still considered 'experimental'. Then ask them how it's done. it makes sense to me that if i don't see a second drive in the fstab there isn;t any mounting which means that there is no raid going on... If you're seeing an ad device, it's not RAID-ed, AFAIK. is there any other way i can make sure if raid is actually on? would there will be any logs somewhere? the machine has been up for about 2 years and the dmesg is long gone... It should be in /var/run/dmesg.boot. thanks. i guess that solves the ad6 mistery: atapci0: Intel ICH5 UDMA100 controller port 0xfc00-0xfc0f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0 ata0: channel #0 on atapci0 ata1: channel #1 on atapci0 atapci1: Intel ICH5 SATA150 controller port 0xcc80-0xcc8f,0xcc98-0xcc9b,0xcca0-0xcca7,0xccb0-0xccb3,0xccb8-0xccbf irq 18 at device 31.2 on pci0 ata2: channel #0 on atapci1 ata3: channel #1 on atapci1 . ad4: 152587MB WDC WD1600JS-75MHB0/03.01C03 [310019/16/63] at ata2-master SATA150 ad6: 152587MB WDC WD1600JS-75MHB0/03.01C03 [310019/16/63] at ata3-master SATA150 Mounting root from ufs:/dev/ad4s1a unless at device 31.2 on pci0 points to some RAID evidence - which i think it's false - than i read this as the ad6 disk sits there unused. am i right?! That is what this looks like. It looks like two 150 GB drives being handled separately. The raids I have handled have been SCSI or SAS, but I presume would be handled the same except switching da to ad. I have always had SCSI and so I have never had to muck with Master/Slave but it looks like you have the disks plugged in to channels 0 1 of the second controller. That doesn't look like it is set up for raid. Maybe something needs to be done in BIOS. I remember, as mentioned before, on the most recent systems I did, that both the individual drives and the raid device showed up in the DMESG output and it took a while to even notice the small single line with the raid device mentioned amidst the mass amount of stuff on the individual drives - there were 6. I almost missed it, but once I found it and used it, the system treated things just right.I don't know what would have happened if I had tried to build a system on the individual drive 0 instead of the raid device, since, fortunately I found it and built on the raid. jerry according to pciconf the atapci0 and atapci1 are differnt conrollers - EIDE and SATA so they can both be on pci0 as 31.1 and 31.2?! still no RAID though... thanks again... Roland -- R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: raid or not raid
On Thu, 24 May 2007 19:11:27 -0400 (EDT)
kalin mintchev [EMAIL PROTECTED] wrote:
unless at device 31.2 on pci0 points to some RAID evidence - which i
think it's false - than i read this as the ad6 disk sits there unused.
am i right?!
FWIW, you can use gstat (as root) to see if a certain geom device (eg, any
storage ) is being accessed, and its load.
it works at leat on 6.x - not sure about 5.x.
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not in circumstances.
Emerson
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