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 array C Logical Drive: 3 Size: 186.3 GB Fault Tolerance: RAID 0 Heads: 255 Sectors Per Track: 32 Cylinders: 47869 Strip Size: 256 KB Status: OK Array Accelerator: Enabled Unique Identifier: 600508B1001C2EDB6026F9ADF9F88A09 Disk Name: /dev/sdc Mount Points: /ssd 186.3 GB Logical Drive Label: AF36B716PACCRCN810E1R9J646A # hpacucli ctrl slot=1 show config Smart Array P410 in Slot 1 (sn: PACCRCN810E1R9J) .... array C (Solid State SAS, Unused Space: 0 MB) logicaldrive 3 (186.3 GB, RAID 0, OK) physicaldrive 1I:1:23 (port 1I:box 1:bay 23, Solid State SAS, 100 GB, OK) physicaldrive 1I:1:24 (port 1I:box 1:bay 24, Solid State SAS, 100 GB, OK) # hpacucli ctrl slot=1 show ssdinfo detail Smart Array P410 in Slot 1 Total Solid State Drives with Wearout Status: 0 Total Smart Array Solid State Drives: 2 Total Solid State SAS Drives: 2 Total Solid State Drives: 2 array C physicaldrive 1I:1:23 Port: 1I Box: 1 Bay: 23 Status: OK Drive Type: Data Drive Interface Type: Solid State SAS Size: 100 GB Firmware Revision: 1234 Serial Number: 999999999999999999 Model: XYZZY M2011 Current Temperature (C): 30 Maximum Temperature (C): 37 SSD Smart Trip Wearout: Not Supported PHY Count: 2 PHY Transfer Rate: 6.0GBPS, Unknown physicaldrive 1I:1:24 Port: 1I Box: 1 Bay: 24 Status: OK Drive Type: Data Drive Interface Type: Solid State SAS Size: 100 GB Firmware Revision: 1234 Serial Number: 999999999999999999 Model: XYZZY M2011 Current Temperature (C): 29 Maximum Temperature (C): 36 SSD Smart Trip Wearout: Not Supported PHY Count: 2 PHY Transfer Rate: 6.0GBPS, Unknown # tail /var/log/messages Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: Attached scsi generic sg3 type 0 Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] 390611040 512-byte logical blocks: (199 GB/186 GiB) Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] 8192-byte physical blocks Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] Write Protect is off Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA Oct 22 22:56:24 svfis-dl180b kernel: sdc: unknown partition table Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] Attached SCSI disk Oct 22 22:56:36 svfis-dl180b cmaeventd[2540]: Logical drive 3 of Array Controller in slot 1, has changed from status Unconfigured to OK # mkfs.ext4 /dev/sdc mke2fs 1.41.12 (17-May-2010) /dev/sdc is entire device, not just one partition! Proceed anyway? (y,n) y Filesystem labelOS type: Linux Block size=8192 (log=3) Fragment size=8192 (log=3) Stride=1 blocks, Stripe width=0 blocks 12210528 inodes, 24413190 blocks 1220659 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=4311218176 373 block groups 65528 blocks per group, 65528 fragments per group 32736 inodes per group Superblock backups stored on blocks: 65528, 196584, 327640, 458696, 589752, 1638200, 1769256, 3210872, 5307768, 8191000, 15923304, 22476104 Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done # mount -t ext4 /dev/sdc /ssd mount: wrong fs type, bad option, bad superblock on /dev/sdc, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so # tail /var/log/messages ... Oct 22 23:54:36 svfis-dl180b kernel: EXT4-fs (sdc): bad block size 8192 ok, so lets try 4K blocks? # mkfs.ext4 -b 4096 /dev/sdc mke2fs 1.41.12 (17-May-2010) /dev/sdc is entire device, not just one partition! Proceed anyway? (y,n) y mkfs.ext4: Invalid argument while setting blocksize; too small for device hmmm. can't do that either? can I configure this 64bit system for large pages or something so it will support 8K blocks? -- john r pierce N 37, W 122 santa cruz ca mid-left coast
Maybe try to partition it to see what happens. On 10/23/2011 12:07 AM, John R Pierce wrote:> 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 > > array C > > Logical Drive: 3 > Size: 186.3 GB > Fault Tolerance: RAID 0 > Heads: 255 > Sectors Per Track: 32 > Cylinders: 47869 > Strip Size: 256 KB > Status: OK > Array Accelerator: Enabled > Unique Identifier: 600508B1001C2EDB6026F9ADF9F88A09 > Disk Name: /dev/sdc > Mount Points: /ssd 186.3 GB > Logical Drive Label: AF36B716PACCRCN810E1R9J646A > > # hpacucli ctrl slot=1 show config > > Smart Array P410 in Slot 1 (sn: PACCRCN810E1R9J) > .... > array C (Solid State SAS, Unused Space: 0 MB) > > > logicaldrive 3 (186.3 GB, RAID 0, OK) > > physicaldrive 1I:1:23 (port 1I:box 1:bay 23, Solid State SAS, 100 > GB, OK) > physicaldrive 1I:1:24 (port 1I:box 1:bay 24, Solid State SAS, 100 > GB, OK) > > # hpacucli ctrl slot=1 show ssdinfo detail > > Smart Array P410 in Slot 1 > Total Solid State Drives with Wearout Status: 0 > Total Smart Array Solid State Drives: 2 > Total Solid State SAS Drives: 2 > Total Solid State Drives: 2 > > > array C > > physicaldrive 1I:1:23 > Port: 1I > Box: 1 > Bay: 23 > Status: OK > Drive Type: Data Drive > Interface Type: Solid State SAS > Size: 100 GB > Firmware Revision: 1234 > Serial Number: 999999999999999999 > Model: XYZZY M2011 > Current Temperature (C): 30 > Maximum Temperature (C): 37 > SSD Smart Trip Wearout: Not Supported > PHY Count: 2 > PHY Transfer Rate: 6.0GBPS, Unknown > > physicaldrive 1I:1:24 > Port: 1I > Box: 1 > Bay: 24 > Status: OK > Drive Type: Data Drive > Interface Type: Solid State SAS > Size: 100 GB > Firmware Revision: 1234 > Serial Number: 999999999999999999 > Model: XYZZY M2011 > Current Temperature (C): 29 > Maximum Temperature (C): 36 > SSD Smart Trip Wearout: Not Supported > PHY Count: 2 > PHY Transfer Rate: 6.0GBPS, Unknown > > > > # tail /var/log/messages > Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: Attached scsi generic > sg3 type 0 > Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] 390611040 > 512-byte logical blocks: (199 GB/186 GiB) > Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] 8192-byte > physical blocks > Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] Write Protect is off > Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] Write cache: > disabled, read cache: enabled, doesn't support DPO or FUA > Oct 22 22:56:24 svfis-dl180b kernel: sdc: unknown partition table > Oct 22 22:56:24 svfis-dl180b kernel: sd 0:0:0:3: [sdc] Attached SCSI disk > Oct 22 22:56:36 svfis-dl180b cmaeventd[2540]: Logical drive 3 of Array > Controller in slot 1, has changed from status Unconfigured to OK > > # mkfs.ext4 /dev/sdc > mke2fs 1.41.12 (17-May-2010) > /dev/sdc is entire device, not just one partition! > Proceed anyway? (y,n) y > Filesystem label> OS type: Linux > Block size=8192 (log=3) > Fragment size=8192 (log=3) > Stride=1 blocks, Stripe width=0 blocks > 12210528 inodes, 24413190 blocks > 1220659 blocks (5.00%) reserved for the super user > First data block=0 > Maximum filesystem blocks=4311218176 > 373 block groups > 65528 blocks per group, 65528 fragments per group > 32736 inodes per group > Superblock backups stored on blocks: > 65528, 196584, 327640, 458696, 589752, 1638200, 1769256, 3210872, > 5307768, 8191000, 15923304, 22476104 > > Writing inode tables: done > Creating journal (32768 blocks): done > Writing superblocks and filesystem accounting information: done > > > # mount -t ext4 /dev/sdc /ssd > mount: wrong fs type, bad option, bad superblock on /dev/sdc, > missing codepage or helper program, or other error > In some cases useful info is found in syslog - try > dmesg | tail or so > > # tail /var/log/messages > ... > Oct 22 23:54:36 svfis-dl180b kernel: EXT4-fs (sdc): bad block size 8192 > > ok, so lets try 4K blocks? > > # mkfs.ext4 -b 4096 /dev/sdc > mke2fs 1.41.12 (17-May-2010) > /dev/sdc is entire device, not just one partition! > Proceed anyway? (y,n) y > mkfs.ext4: Invalid argument while setting blocksize; too small for device > > > > hmmm. can't do that either? > > can I configure this 64bit system for large pages or something so it > will support 8K blocks? > > > >
From: John R Pierce <pierce at hogranch.com>> On a CentOS 6 64bit system, I added a couple prototype SAS SSDs on a HP > P411 raid controller ... > ? ? ? ? ? Disk Name: /dev/sdc > ...Just wondering how come the array is detected as /dev/sd* instead of the classical /dev/cciss/c0d*... Is the P411 a fake raid? JD