On Thu, 18 Sep 2014 12:38:55 +0200 Marco Schindler <marco.schindler@xxxxxxxxx> wrote: > > On 18.09.2014, at 12:03, NeilBrown <neilb@xxxxxxx> wrote: > > > Getting a "change" even on spindown is causing the problem I suspect. > > A change in 3.3.1 causes "mdadm -I" to be run on a device when it 'changes'. > > That will read from the device which will wake it up. > > (commit 25392f5fc59f96fb76 - revert it and the symptom will probably go away). > > > > I really think the "bug" here is that the change event is emitted on > > 'spindown', but maybe the bug is that the exact meaning of 'change' isn't > > well documented. > > > > I can probably get "mdadm -I" to use O_EXCL which will fail on devices > > already in an array, but I'm not sure that is a complete solution. You could > > still get wakeups on other devices. > > > > Can you rung the 'udevadm monitor' again, but this time with '--property'. > > Maybe there is some property associated with spindown events which we can use > > to ignore them. > > > > NeilBrown > > sure. I also took separate logs for standby and wakeup. > > change events only occur when the drive goes standby (see below). > strangely enough, there are no events when the drive wakes up. > > monitor will print the received events for: > UDEV - the event which udev sends out after rule processing > KERNEL - the kernel uevent ... Thanks. There is nothing there which point to the device being spun down. I tried spinning down disks on a couple of machines and no udev events were created. So I'm a bit suspicious that there is something I'm missing. How exactly do you spin down the devices? I use "hdparm -Y /dev/sda" or "hdparm -S 1 /dev/sda". NeilBrown > > KERNEL[558130.868218] change /devices/pci0000:00/0000:00:06.0/0000:09:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/block/sda (block) > ACTION=change > DEVNAME=/dev/sda > DEVPATH=/devices/pci0000:00/0000:00:06.0/0000:09:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/block/sda > DEVTYPE=disk > MAJOR=8 > MINOR=0 > SEQNUM=3239 > SUBSYSTEM=block > > KERNEL[558132.028485] change /devices/pci0000:00/0000:00:06.0/0000:09:00.0/host0/port-0:1/end_device-0:1/target0:0:1/0:0:1:0/block/sdb (block) > ACTION=change > DEVNAME=/dev/sdb > DEVPATH=/devices/pci0000:00/0000:00:06.0/0000:09:00.0/host0/port-0:1/end_device-0:1/target0:0:1/0:0:1:0/block/sdb > DEVTYPE=disk > MAJOR=8 > MINOR=16 > SEQNUM=3240 > SUBSYSTEM=block > > UDEV [558139.263973] change /devices/pci0000:00/0000:00:06.0/0000:09:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/block/sda (block) > ACTION=change > DEVLINKS=/dev/disk/by-id/ata-WDC_WD20EARS-00S8B1_WD-WCAVY1872131 /dev/disk/by-id/wwn-0x50014ee203dca984 /dev/disk/by-path/pci-0000:09:00.0-sas-0x4433221103000000-lun-0 > DEVNAME=/dev/sda > DEVPATH=/devices/pci0000:00/0000:00:06.0/0000:09:00.0/host0/port-0:0/end_device-0:0/target0:0:0/0:0:0:0/block/sda > DEVTYPE=disk > ID_ATA=1 > ID_ATA_DOWNLOAD_MICROCODE=1 > ID_ATA_FEATURE_SET_AAM=1 > ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=254 > ID_ATA_FEATURE_SET_AAM_ENABLED=0 > ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=128 > ID_ATA_FEATURE_SET_HPA=1 > ID_ATA_FEATURE_SET_HPA_ENABLED=1 > ID_ATA_FEATURE_SET_PM=1 > ID_ATA_FEATURE_SET_PM_ENABLED=1 > ID_ATA_FEATURE_SET_PUIS=1 > ID_ATA_FEATURE_SET_PUIS_ENABLED=0 > ID_ATA_FEATURE_SET_SECURITY=1 > ID_ATA_FEATURE_SET_SECURITY_ENABLED=0 > ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=408 > ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=408 > ID_ATA_FEATURE_SET_SMART=1 > ID_ATA_FEATURE_SET_SMART_ENABLED=1 > ID_ATA_SATA=1 > ID_ATA_SATA_SIGNAL_RATE_GEN1=1 > ID_ATA_SATA_SIGNAL_RATE_GEN2=1 > ID_ATA_WRITE_CACHE=1 > ID_ATA_WRITE_CACHE_ENABLED=1 > ID_BUS=ata > ID_FS_LABEL=alina.o81.5:media3 > ID_FS_LABEL_ENC=alina.o81.5:media3 > ID_FS_TYPE=linux_raid_member > ID_FS_USAGE=raid > ID_FS_UUID=058bd7b0-455c-0d7e-6de0-a845ea05ee38 > ID_FS_UUID_ENC=058bd7b0-455c-0d7e-6de0-a845ea05ee38 > ID_FS_UUID_SUB=da1c1cad-6661-174c-b0b9-4bc1a712902d > ID_FS_UUID_SUB_ENC=da1c1cad-6661-174c-b0b9-4bc1a712902d > ID_FS_VERSION=1.2 > ID_MODEL=WDC_WD20EARS-00S8B1 > ID_MODEL_ENC=WDC\x20WD20EARS-00S8B1\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20 > ID_PATH=pci-0000:09:00.0-sas-0x4433221103000000-lun-0 > ID_PATH_TAG=pci-0000_09_00_0-sas-0x4433221103000000-lun-0 > ID_REVISION=80.00A80 > ID_SERIAL=WDC_WD20EARS-00S8B1_WD-WCAVY1872131 > ID_SERIAL_SHORT=WD-WCAVY1872131 > ID_TYPE=disk > ID_WWN=0x50014ee203dca984 > ID_WWN_WITH_EXTENSION=0x50014ee203dca984 > MAJOR=8 > MINOR=0 > SEQNUM=3239 > SUBSYSTEM=block > USEC_INITIALIZED=2003 > > UDEV [558139.293742] change /devices/pci0000:00/0000:00:06.0/0000:09:00.0/host0/port-0:1/end_device-0:1/target0:0:1/0:0:1:0/block/sdb (block) > ACTION=change > DEVLINKS=/dev/disk/by-id/ata-WDC_WD20EARS-00S8B1_WD-WCAVY1879365 /dev/disk/by-id/wwn-0x50014ee25931e63a /dev/disk/by-path/pci-0000:09:00.0-sas-0x4433221102000000-lun-0 > DEVNAME=/dev/sdb > DEVPATH=/devices/pci0000:00/0000:00:06.0/0000:09:00.0/host0/port-0:1/end_device-0:1/target0:0:1/0:0:1:0/block/sdb > DEVTYPE=disk > ID_ATA=1 > ID_ATA_DOWNLOAD_MICROCODE=1 > ID_ATA_FEATURE_SET_AAM=1 > ID_ATA_FEATURE_SET_AAM_CURRENT_VALUE=254 > ID_ATA_FEATURE_SET_AAM_ENABLED=0 > ID_ATA_FEATURE_SET_AAM_VENDOR_RECOMMENDED_VALUE=128 > ID_ATA_FEATURE_SET_HPA=1 > ID_ATA_FEATURE_SET_HPA_ENABLED=1 > ID_ATA_FEATURE_SET_PM=1 > ID_ATA_FEATURE_SET_PM_ENABLED=1 > ID_ATA_FEATURE_SET_PUIS=1 > ID_ATA_FEATURE_SET_PUIS_ENABLED=0 > ID_ATA_FEATURE_SET_SECURITY=1 > ID_ATA_FEATURE_SET_SECURITY_ENABLED=0 > ID_ATA_FEATURE_SET_SECURITY_ENHANCED_ERASE_UNIT_MIN=408 > ID_ATA_FEATURE_SET_SECURITY_ERASE_UNIT_MIN=408 > ID_ATA_FEATURE_SET_SMART=1 > ID_ATA_FEATURE_SET_SMART_ENABLED=1 > ID_ATA_SATA=1 > ID_ATA_SATA_SIGNAL_RATE_GEN1=1 > ID_ATA_SATA_SIGNAL_RATE_GEN2=1 > ID_ATA_WRITE_CACHE=1 > ID_ATA_WRITE_CACHE_ENABLED=1 > ID_BUS=ata > ID_FS_LABEL=alina.o81.5:media3 > ID_FS_LABEL_ENC=alina.o81.5:media3 > ID_FS_TYPE=linux_raid_member > ID_FS_USAGE=raid > ID_FS_UUID=058bd7b0-455c-0d7e-6de0-a845ea05ee38 > ID_FS_UUID_ENC=058bd7b0-455c-0d7e-6de0-a845ea05ee38 > ID_FS_UUID_SUB=ade4cbb9-501c-cd2c-00b2-607f1699133b > ID_FS_UUID_SUB_ENC=ade4cbb9-501c-cd2c-00b2-607f1699133b > ID_FS_VERSION=1.2 > ID_MODEL=WDC_WD20EARS-00S8B1 > ID_MODEL_ENC=WDC\x20WD20EARS-00S8B1\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20 > ID_PATH=pci-0000:09:00.0-sas-0x4433221102000000-lun-0 > ID_PATH_TAG=pci-0000_09_00_0-sas-0x4433221102000000-lun-0 > ID_REVISION=80.00A80 > ID_SERIAL=WDC_WD20EARS-00S8B1_WD-WCAVY1879365 > ID_SERIAL_SHORT=WD-WCAVY1879365 > ID_TYPE=disk > ID_WWN=0x50014ee25931e63a > ID_WWN_WITH_EXTENSION=0x50014ee25931e63a > MAJOR=8 > MINOR=16 > SEQNUM=3240 > SUBSYSTEM=block > USEC_INITIALIZED=2361
Attachment:
signature.asc
Description: PGP signature
