Hi New to Linux, not sure if this is a legitimate fault, or if I am doing something wrong. Please can you advise on which release of LVM2 (if any) fixes this issue. Initially tested using SL6.4, now testing with SL6.5. I have used both LiveDVD and basic “Minimal Desktop” Installations on the target computer and inside a VirtualBox Virtual Machine. I am preparing to install SL6.5 on a small system with 3x750GB Disks. As a pre-requisite, I wish to testing the performance of the disks using different chunk/block sizes using LVM2 RAID5. It is a preference to use LVM2 RAID5 rather than mdraid and LVM2 to reduce the complexity of setting up and managing the system. However I am experiencing a problem when creating the Logical Volume. This issue occurs with both SL6.4 and SL6.5: /dev/vg_system1/lv_system1: read failed after 0 of 4096 at 0: Input/output error /dev/vg_system1/lv_system1: write failed after 0 of 4096 at 0: Input/output error There was one additional issue with SL6.4 which also appears to be partially resolved in SL6.5. Certain commands function without an issue, however once the issue manifests, it appears in most or all commands: [root@localhost ~]# pvscan -vd Wiping cache of LVM-capable devices Wiping internal VG cache Walking through all physical volumes /dev/vg_system1/lv_system1: read failed after 0 of 4096 at 5368643584: Input/output error /dev/vg_system1/lv_system1: read failed after 0 of 4096 at 5368700928: Input/output error /dev/vg_system1/lv_system1: read failed after 0 of 4096 at 0: Input/output error /dev/vg_system1/lv_system1: read failed after 0 of 4096 at 4096: Input/output error /dev/vg_system1/lv_system1: read failed after 0 of 4096 at 0: Input/output error PV /dev/sdb1 VG vg_system1 lvm2 [16.00 GiB / 13.50 GiB free] PV /dev/sdc1 VG vg_system1 lvm2 [16.00 GiB / 13.50 GiB free] PV /dev/sdd1 VG vg_system1 lvm2 [16.00 GiB / 13.50 GiB free] PV /dev/sda2 VG VolGroup lvm2 [11.51 GiB / 0 free] Total: 4 [59.50 GiB] / in use: 4 [59.50 GiB] / in no VG: 0 [0 ] I am at a loss to explain this, I cannot find any information relating to these errors. If I cannot resolve this within a reasonable period of time, I will be forced to use mdraid which is much less flexible – i.e. if I wish to use different RAID modes, I have to use separate partitions/volume groups for example I would consider using unraided partitions for /boot, RAID 0 for SWAP and /tmp and RAID 5 for the rest of the system. Separating these into different partitions means the system will have to span further across the disk at times. I am considering possibly testing a later revision of LVM2 as I understand that SL6.5 has LVM2-2.02.100-8 while subversions 101 – 105 are available. I understand that to do this I may have to download the source code of this and dependant packages and compile it. This is not something I can easily do, but am prepared to try if I can get some guidance. It may be useful to test this in RHEL 6.5 and CentOS 6.5 though I could only do this on the latter myself. Below are the scripts to destroy the test LV/VG/PV and a test pass, and a script to create the PV/VG/LV as executed on a test system. Each attempt I execute the destroy script prior to running the create script. There is also a dump of the partition tables. I hope you can point me in the right direction! Thanks and Regards, J Woolliscroft [root@localhost ~]# cat d_lv lvremove /dev/vg_system1/lv_system1 vgremove vg_system1 pvremove /dev/sdb1 /dev/sdc1 /dev/sdd1 ===== [root@localhost ~]# . ./d_lv Do you really want to remove active logical volume lv_system1? [y/n]: y Logical volume "lv_system1" successfully removed Volume group "vg_system1" successfully removed Labels on physical volume "/dev/sdb1" successfully wiped Labels on physical volume "/dev/sdc1" successfully wiped Labels on physical volume "/dev/sdd1" successfully wipeda [root@localhost ~]# cat c_lv parted -l pvcreate -M2 -v /dev/sdb1 /dev/sdc1 /dev/sdd1 pvs -v -d pvscan -v -d vgcreate -s 4kib -v vg_system1 /dev/sdb1 /dev/sdc1 /dev/sdd1 vgs -v -d vgscan -v -d lvcreate --type raid5 -i 2 -I 4 -L 5G -ay -Zy -v -n lv_system1 vg_system1 lvs -v -d lvscan -v -d [root@localhost ~]# . ./c_lv Model: ATA VBOX HARDDISK (scsi) Disk /dev/sda: 12.9GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 525MB 524MB primary ext4 boot 2 525MB 12.9GB 12.4GB primary lvm Model: ATA VBOX HARDDISK (scsi) Disk /dev/sdb: 17.2GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 17.2GB 17.2GB primary lvm Model: ATA VBOX HARDDISK (scsi) Disk /dev/sdc: 17.2GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 17.2GB 17.2GB primary lvm Model: ATA VBOX HARDDISK (scsi) Disk /dev/sdd: 17.2GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 17.2GB 17.2GB primary lvm Model: Linux device-mapper (linear) (dm) Disk /dev/mapper/VolGroup-lv_swap: 2147MB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size File system Flags 1 0.00B 2147MB 2147MB linux-swap(v1) Model: Linux device-mapper (linear) (dm) Disk /dev/mapper/VolGroup-lv_root: 10.2GB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size File system Flags 1 0.00B 10.2GB 10.2GB ext4 Set up physical volume for "/dev/sdb1" with 33552351 available sectors Zeroing start of device /dev/sdb1 Writing physical volume data to disk "/dev/sdb1" Physical volume "/dev/sdb1" successfully created Set up physical volume for "/dev/sdc1" with 33552351 available sectors Zeroing start of device /dev/sdc1 Writing physical volume data to disk "/dev/sdc1" Physical volume "/dev/sdc1" successfully created Set up physical volume for "/dev/sdd1" with 33552351 available sectors Zeroing start of device /dev/sdd1 Writing physical volume data to disk "/dev/sdd1" Physical volume "/dev/sdd1" successfully created Scanning for physical volume names Wiping cache of LVM-capable devices PV VG Fmt Attr PSize PFree DevSize PV UUID /dev/sda2 VolGroup lvm2 a-- 11.51g 0 11.51g JjV0kz-rW98-zTxe-X1jm-T9h3-i6SG-Frd325 /dev/sdb1 lvm2 a-- 16.00g 16.00g 16.00g k7kxWU-W1bh-Eqda-xVj8-aBva-efN4-Et5B94 /dev/sdc1 lvm2 a-- 16.00g 16.00g 16.00g 9M29V5-qldE-mSVl-Z2UY-h9nM-1F3i-AEsNYu /dev/sdd1 lvm2 a-- 16.00g 16.00g 16.00g zPpXzZ-ptwp-qxok-ubNq-asmz-Ifcj-QtRvfv Wiping cache of LVM-capable devices Wiping internal VG cache Walking through all physical volumes PV /dev/sda2 VG VolGroup lvm2 [11.51 GiB / 0 free] PV /dev/sdb1 lvm2 [16.00 GiB] PV /dev/sdc1 lvm2 [16.00 GiB] PV /dev/sdd1 lvm2 [16.00 GiB] Total: 4 [59.50 GiB] / in use: 1 [11.51 GiB] / in no VG: 3 [48.00 GiB] Wiping cache of LVM-capable devices Wiping cache of LVM-capable devices Adding physical volume '/dev/sdb1' to volume group 'vg_system1' Adding physical volume '/dev/sdc1' to volume group 'vg_system1' Adding physical volume '/dev/sdd1' to volume group 'vg_system1' Archiving volume group "vg_system1" metadata (seqno 0). Creating volume group backup "/etc/lvm/backup/vg_system1" (seqno 1). Volume group "vg_system1" successfully created Finding all volume groups Finding volume group "vg_system1" Finding volume group "VolGroup" VG Attr Ext #PV #LV #SN VSize VFree VG UUID VProfile VolGroup wz--n- 4.00m 1 2 0 11.51g 0 oaJmPd-ElY9-a0E9-hUlu-SLxE-XTje-LfpO31 vg_system1 wz--n- 4.00k 3 0 0 47.99g 47.99g hZTC0w-k0bJ-6M2A-Fmky-hHLo-hzHM-k8gdPl Wiping cache of LVM-capable devices Wiping internal VG cache Reading all physical volumes. This may take a while... Finding all volume groups Finding volume group "vg_system1" Found volume group "vg_system1" using metadata type lvm2 Finding volume group "VolGroup" Found volume group "VolGroup" using metadata type lvm2 Setting logging type to disk Finding volume group "vg_system1" Archiving volume group "vg_system1" metadata (seqno 1). Creating logical volume lv_system1 Creating logical volume lv_system1_rimage_0 Creating logical volume lv_system1_rmeta_0 Creating logical volume lv_system1_rimage_1 Creating logical volume lv_system1_rmeta_1 Creating logical volume lv_system1_rimage_2 Creating logical volume lv_system1_rmeta_2 activation/volume_list configuration setting not defined: Checking only host tags for vg_system1/lv_system1_rmeta_0 Creating vg_system1-lv_system1_rmeta_0 Loading vg_system1-lv_system1_rmeta_0 table (253:2) Resuming vg_system1-lv_system1_rmeta_0 (253:2) Clearing metadata area of vg_system1/lv_system1_rmeta_0 Clearing start of logical volume "lv_system1_rmeta_0" Removing vg_system1-lv_system1_rmeta_0 (253:2) activation/volume_list configuration setting not defined: Checking only host tags for vg_system1/lv_system1_rmeta_1 Creating vg_system1-lv_system1_rmeta_1 Loading vg_system1-lv_system1_rmeta_1 table (253:2) Resuming vg_system1-lv_system1_rmeta_1 (253:2) Clearing metadata area of vg_system1/lv_system1_rmeta_1 Clearing start of logical volume "lv_system1_rmeta_1" Removing vg_system1-lv_system1_rmeta_1 (253:2) activation/volume_list configuration setting not defined: Checking only host tags for vg_system1/lv_system1_rmeta_2 Creating vg_system1-lv_system1_rmeta_2 Loading vg_system1-lv_system1_rmeta_2 table (253:2) Resuming vg_system1-lv_system1_rmeta_2 (253:2) Clearing metadata area of vg_system1/lv_system1_rmeta_2 Clearing start of logical volume "lv_system1_rmeta_2" Removing vg_system1-lv_system1_rmeta_2 (253:2) Creating volume group backup "/etc/lvm/backup/vg_system1" (seqno 3). activation/volume_list configuration setting not defined: Checking only host tags for vg_system1/lv_system1 Creating vg_system1-lv_system1_rmeta_0 Loading vg_system1-lv_system1_rmeta_0 table (253:2) Resuming vg_system1-lv_system1_rmeta_0 (253:2) Creating vg_system1-lv_system1_rimage_0 Loading vg_system1-lv_system1_rimage_0 table (253:3) Resuming vg_system1-lv_system1_rimage_0 (253:3) Creating vg_system1-lv_system1_rmeta_1 Loading vg_system1-lv_system1_rmeta_1 table (253:4) Resuming vg_system1-lv_system1_rmeta_1 (253:4) Creating vg_system1-lv_system1_rimage_1 Loading vg_system1-lv_system1_rimage_1 table (253:5) Resuming vg_system1-lv_system1_rimage_1 (253:5) Creating vg_system1-lv_system1_rmeta_2 Loading vg_system1-lv_system1_rmeta_2 table (253:6) Resuming vg_system1-lv_system1_rmeta_2 (253:6) Creating vg_system1-lv_system1_rimage_2 Loading vg_system1-lv_system1_rimage_2 table (253:7) Resuming vg_system1-lv_system1_rimage_2 (253:7) Creating vg_system1-lv_system1 Loading vg_system1-lv_system1 table (253:8) Resuming vg_system1-lv_system1 (253:8) Monitoring vg_system1/lv_system1 Clearing start of logical volume "lv_system1" /dev/vg_system1/lv_system1: read failed after 0 of 4096 at 0: Input/output error /dev/vg_system1/lv_system1: write failed after 0 of 4096 at 0: Input/output error Creating volume group backup "/etc/lvm/backup/vg_system1" (seqno 3). Logical volume "lv_system1" created Finding all logical volumes LV VG #Seg Attr LSize Maj Min KMaj KMin Pool Origin Data% Meta% Move Cpy%Sync Log Convert LV UUID LProfile lv_root VolGroup 1 -wi-ao---- 9.51g -1 -1 253 0 BG77rR-C2lS-UXzm-V4KI-ptcG-1BZu-0yqVcV lv_swap VolGroup 1 -wi-ao---- 2.00g -1 -1 253 1 i6uo0r-9T2P-OW60-Z1i7-6o7y-id1Q-1R7Lli lv_system1 vg_system1 1 rwi-a-r-r- 5.00g -1 -1 253 8 100.00 GM0hKc-BHNV-CUAR-y0US-5Iw9-Ihi0-GSFD1V Finding all logical volumes ACTIVE '/dev/vg_system1/lv_system1' [5.00 GiB] inherit ACTIVE '/dev/VolGroup/lv_root' [9.51 GiB] inherit ACTIVE '/dev/VolGroup/lv_swap' [2.00 GiB] inherit [root@localhost ~]# |
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