Red Hat Bugzilla – Bug 206419
pvcreate fails with: Cant' open exclusively
Last modified: 2013-02-28 23:04:21 EST
Description of problem: When I try to create pv's for LVM2 on four 250GB Sata disks it failed with error: [root@uni-media Documentation]# pvcreate /dev/sdc Can't open /dev/sdc exclusively. Mounted filesystem? Version-Release number of selected component (if applicable): both RHEL4 update 3 and RHEL4 update 4 are affected. How reproducible: Every time Steps to Reproduce: 1. plug any SATA disk in RAID controller 2. try to launch "pvcreate /dev/[diskname]" Actual results: Can't open [diskname] exclusively. Mounted filesystem? Expected results: succesfully created PV Additional info: I've found exact the same problem here: http://www.redhat.com/archives/linux-lvm/2006-May/msg00040.html I've wrote author of that message about my problem, here is his answer: =========== I have four drives attached to this controller and they are all detected. It is a PDC20276 controller, with limitations. (so I've read). The kernel uses this chip in some sort of "native" mode I think (I am no expert on this) anyway there are no kernel modules loaded for this. I used "Chip Select" (CS) on the drives in which case the controller should assign Master/Slave settings. But somehow this fails. I set the jumpers on the disks from CS to Master/Slave and now it magically works. Don't know if this is just luck, magic or expected behaviour... ========== Maybe bug is related to RAID drivers or something like that. My hw info: 00:00.0 Host bridge: Intel Corporation 82875P/E7210 Memory Controller Hub (rev 02) 00:01.0 PCI bridge: Intel Corporation 82875P Processor to AGP Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev c2) 00:1f.0 ISA bridge: Intel Corporation 82801EB/ER (ICH5/ICH5R) LPC Interface Bridge (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801EB/ER (ICH5/ICH5R) IDE Controller (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02) 00:1f.3 SMBus: Intel Corporation 82801EB/ER (ICH5/ICH5R) SMBus Controller (rev 02) 02:07.0 RAID bus controller: Promise Technology, Inc. PDC20319 (FastTrak S150 TX4) (rev 02) 02:09.0 VGA compatible controller: ATI Technologies Inc Rage XL (rev 27) 02:0a.0 Ethernet controller: Intel Corporation 82541EI Gigabit Ethernet Controller (Copper) 02:0b.0 Ethernet controller: Intel Corporation 82541EI Gigabit Ethernet Controller (Copper)
I'm able to run mkfs.ext3 /dev/sdc1 but I can't mount it. mount -v /dev/sdd1 /tmp/1 mount: you didn't specify a filesystem type for /dev/sdd1 I will try type ext3 mount: /dev/sdd1 already mounted or /tmp/1 busy So, I suppose, that this bug isn't related to LVM2 anymore, but to sata_promise driver.
Seem like some configuration or hw-related problem here, not lvm2 related. I am closing this bug, if you hit this again with RHEL4 kernel update, please contact official Red Hat Enterprise Linux support http://www.redhat.com/support and file a support ticket for this hw compatibility problem. Thanks.