similar to: ssacli start rebuild?

On a CentOS 6 64bit system, I added a couple prototype SAS SSDs on a HP P411 raid controller (I believe this is a rebranded LSI megaraid with HP firmware) and am trying to format them for best random IO performance with something like postgresql. so, I used the raid command tool to build a raid0 with 2 SAS SSDs # hpacucli ctrl slot=1 logicaldrive 3 show detail Smart Array P410 in Slot 1

On Fri, 2020-11-06 at 12:08 +0100, Thomas Bendler wrote: > Am Fr., 6. Nov. 2020 um 00:52 Uhr schrieb hw <hw at gc-24.de>: > > > [...] > > logicaldrive 1 (14.55 TB, RAID 1+0, Ready for Rebuild) > > [...] > > Have you checked the rebuild priority: > > ? ssacli ctrl slot=0 show config detail | grep "Rebuild Priority" >

Am Fr., 6. Nov. 2020 um 00:52 Uhr schrieb hw <hw at gc-24.de>: > [...] > logicaldrive 1 (14.55 TB, RAID 1+0, Ready for Rebuild) > [...] Have you checked the rebuild priority: ? ssacli ctrl slot=0 show config detail | grep "Rebuild Priority" ~ Rebuild Priority: Medium ? Slot needs to be adjusted to your

Hello all I'm gathering the output of the hpacucli program from as much configurations as possible. If you can find some free time for me, can you send me the output of: hpacucli ctrl all show detail hpacucli ctrl slot=1 show config hpacucli ctrl slot=1 array all show hpacucli ctrl slot=1 array A show hpacucli ctrl slot=1 physicaldrive all show hpacucli ctrl slot=1 physicaldrive 2I:1:1

On Mon, 2020-11-09 at 16:30 +0100, Thomas Bendler wrote: > Am Fr., 6. Nov. 2020 um 20:38 Uhr schrieb hw <hw at gc-24.de>: > > > [...] > > Some search results indicate that it's possible that other disks in the > > array have read errors and might prevent rebuilding for RAID 5. I don't > > know if there are read errors, and if it's read errors, I

On Wed, 2020-11-11 at 11:34 +0100, Thomas Bendler wrote: > Am Mi., 11. Nov. 2020 um 07:28 Uhr schrieb hw <hw at gc-24.de>: > > > [...] > > With this experience, these controllers are now deprecated. RAID > > controllers > > that can't rebuild an array after a disk has failed and has been replaced > > are virtually useless. > > [...] > >

Am Fr., 6. Nov. 2020 um 20:38 Uhr schrieb hw <hw at gc-24.de>: > [...] > Some search results indicate that it's possible that other disks in the > array have read errors and might prevent rebuilding for RAID 5. I don't > know if there are read errors, and if it's read errors, I think it would > mean that these errors would have to affect just the disk which is

Am Mi., 11. Nov. 2020 um 07:28 Uhr schrieb hw <hw at gc-24.de>: > [...] > With this experience, these controllers are now deprecated. RAID > controllers > that can't rebuild an array after a disk has failed and has been replaced > are virtually useless. > [...] HW RAID is often delivered with quite limited functionality. Because of this I switched in most cases to

On Nov 11, 2020, at 2:01 PM, hw <hw at gc-24.de> wrote: > > I have yet to see software RAID that doesn't kill the performance. When was the last time you tried it? Why would you expect that a modern 8-core Intel CPU would impede I/O in any measureable way as compared to the outdated single-core 32-bit RISC CPU typically found on hardware RAID cards? These are the same CPUs,

> On Nov 11, 2020, at 6:00 PM, John Pierce <jhn.pierce at gmail.com> wrote: > > On Wed, Nov 11, 2020 at 3:38 PM Warren Young <warren at etr-usa.com> wrote: > >> On Nov 11, 2020, at 2:01 PM, hw <hw at gc-24.de> wrote: >>> >>> I have yet to see software RAID that doesn't kill the performance. >> >> When was the last time you

On Nov 11, 2020, at 6:37 PM, Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote: > > how do you map failed software RAID drive to physical port of, say, SAS-attached enclosure. With ZFS, you set a partition label on the whole-drive partition pool member, then mount the pool with something like ?zpool mount -d /dev/disk/by-partlabel?, which then shows the logical disk names in

On Wed, Nov 11, 2020 at 5:47 PM Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote: > I?m sure you can reflash LSI card to make it SATA or SAS HBA, or MegaRAD > hardware RAID adapter. Is far as I recollect it is the same electronics > board. I reflashed a couple of HBAs to make them MegaRAID boards. > you can reflash SOME megaraid cards to put them in IT 'hba' mode,

On Sat, Nov 14, 2020, 4:57 AM hw <hw at gc-24.de> wrote: > On Wed, 2020-11-11 at 16:38 -0700, Warren Young wrote: > > > > And where > > > do you get cost-efficient cards that can do JBOD? > > > > $69, 8 SATA/SAS ports: https://www.newegg.com/p/0ZK-08UH-0GWZ1 > > That says it's for HP. So will you still get firmware updates once > the

> On Wed, 2020-11-11 at 16:38 -0700, Warren Young wrote: >> On Nov 11, 2020, at 2:01 PM, hw <hw at gc-24.de> wrote: >> > I have yet to see software RAID that doesn't kill the performance. >> >> When was the last time you tried it? > > I'm currently using it, and the performance sucks. Perhaps it's > not the software itself or the CPU but

On Sat, 2020-11-14 at 07:11 -0800, John Pierce wrote: > On Sat, Nov 14, 2020, 4:57 AM hw <hw at gc-24.de> wrote: > > > On Wed, 2020-11-11 at 16:38 -0700, Warren Young wrote: > > > > > > And where > > > > do you get cost-efficient cards that can do JBOD? > > > > > > $69, 8 SATA/SAS ports: https://www.newegg.com/p/0ZK-08UH-0GWZ1

> On Nov 11, 2020, at 5:38 PM, Warren Young <warren at etr-usa.com> wrote: > > On Nov 11, 2020, at 2:01 PM, hw <hw at gc-24.de> wrote: >> >> I have yet to see software RAID that doesn't kill the performance. > > When was the last time you tried it? > > Why would you expect that a modern 8-core Intel CPU would impede I/O in any measureable way as

On Nov 14, 2020, at 5:56 AM, hw <hw at gc-24.de> wrote: > > On Wed, 2020-11-11 at 16:38 -0700, Warren Young wrote: >> On Nov 11, 2020, at 2:01 PM, hw <hw at gc-24.de> wrote: >>> I have yet to see software RAID that doesn't kill the performance. >> >> When was the last time you tried it? > > I'm currently using it, and the performance

in large raids, I label my disks with the last 4 or 6 digits of the drive serial number (or for SAS disks, the WWN). this is visible via smartctl, and I record it with the zpool documentation I keep on each server (typically a text file on a cloud drive). zpools don't actually care WHAT slot a given pool member is in, you can shut the box down, shuffle all the disks, boot back up and

On Sat, 2020-11-14 at 18:55 +0100, Simon Matter wrote: > > On Wed, 2020-11-11 at 16:38 -0700, Warren Young wrote: > > > On Nov 11, 2020, at 2:01 PM, hw <hw at gc-24.de> wrote: > > > > I have yet to see software RAID that doesn't kill the performance. > > > > > > When was the last time you tried it? > > > > I'm currently using

On Wed, Nov 11, 2020 at 3:38 PM Warren Young <warren at etr-usa.com> wrote: > On Nov 11, 2020, at 2:01 PM, hw <hw at gc-24.de> wrote: > > > > I have yet to see software RAID that doesn't kill the performance. > > When was the last time you tried it? > > Why would you expect that a modern 8-core Intel CPU would impede I/O in > any measureable way as