Hi,
What could be the reason for scsi_wait_scan not waiting untill all disks are
found?
I'm testing 2.6.30.5 on hardware with LSI Logic / Symbios Logic MegaRAID 530
SCSI 320-0X RAID controller and modprobe scsi_wait_scan finishes earlier than
disks are found.
My initrd (romfs) does:
insmod /lib/modules/2.6.30.5-0.3/kernel/drivers/scsi/scsi_mod.ko
insmod /lib/modules/2.6.30.5-0.3/kernel/drivers/scsi/megaraid/megaraid_mm.ko
insmod /lib/modules/2.6.30.5-0.3/kernel/drivers/scsi/megaraid/megaraid_mbox.ko
insmod /lib/modules/2.6.30.5-0.3/kernel/lib/crc-t10dif.ko
insmod /lib/modules/2.6.30.5-0.3/kernel/drivers/scsi/sd_mod.ko
insmod /lib/modules/2.6.30.5-0.3/kernel/drivers/scsi/scsi_wait_scan.ko
insmod /lib/modules/2.6.30.5-0.3/kernel/fs/exportfs/exportfs.ko
insmod /lib/modules/2.6.30.5-0.3/kernel/fs/xfs/xfs.ko
if [ "${ROOT##/dev/}" != "${ROOT}" ]; then
rootnr="$(busybox awk -v rootnode="${ROOT##/dev/}" '$4 == rootnode { print 256
* $1 + $2 }' /proc/partitions)"
if [ -n "$rootnr" ]; then
echo "$rootnr" > /proc/sys/kernel/real-root-dev
fi
Now if I add sleep few seconds or /bin/sh at the end of this initrd, then boot
and then disks are detected properly and rootfs is mounted properly (after I
exit from sh in case when /bin/sh is used).
The question remains - why scsi_wait_scan doesn't wait?
[root@rhea ~]# zgrep SCSI /proc/config.gz
CONFIG_CISS_SCSI_TAPE=y
# SCSI device support
CONFIG_SCSI=m
CONFIG_SCSI_DMA=y
CONFIG_SCSI_TGT=m
CONFIG_SCSI_NETLINK=y
CONFIG_SCSI_PROC_FS=y
# SCSI support type (disk, tape, CD-ROM)
CONFIG_SCSI_ENCLOSURE=m
# Some SCSI devices (e.g. CD jukebox) support multiple LUNs
CONFIG_SCSI_MULTI_LUN=y
# CONFIG_SCSI_CONSTANTS is not set
CONFIG_SCSI_LOGGING=y
CONFIG_SCSI_SCAN_ASYNC=y
CONFIG_SCSI_WAIT_SCAN=m
# SCSI Transports
CONFIG_SCSI_SPI_ATTRS=m
CONFIG_SCSI_FC_ATTRS=m
CONFIG_SCSI_FC_TGT_ATTRS=y
CONFIG_SCSI_ISCSI_ATTRS=m
CONFIG_SCSI_SAS_ATTRS=m
CONFIG_SCSI_SAS_LIBSAS=m
CONFIG_SCSI_SAS_ATA=y
CONFIG_SCSI_SAS_HOST_SMP=y
# CONFIG_SCSI_SAS_LIBSAS_DEBUG is not set
CONFIG_SCSI_SRP_ATTRS=m
CONFIG_SCSI_SRP_TGT_ATTRS=y
CONFIG_SCSI_LOWLEVEL=y
CONFIG_ISCSI_TCP=m
CONFIG_SCSI_CXGB3_ISCSI=m
CONFIG_SCSI_3W_9XXX=m
CONFIG_SCSI_ACARD=m
CONFIG_SCSI_AACRAID=m
CONFIG_SCSI_AIC7XXX=m
CONFIG_SCSI_AIC7XXX_OLD=m
CONFIG_SCSI_AIC79XX=m
CONFIG_SCSI_AIC94XX=m
CONFIG_SCSI_DPT_I2O=m
CONFIG_SCSI_ADVANSYS=m
CONFIG_SCSI_ARCMSR=m
CONFIG_SCSI_ARCMSR_AER=y
CONFIG_SCSI_MPT2SAS=m
CONFIG_SCSI_MPT2SAS_MAX_SGE=128
CONFIG_SCSI_MPT2SAS_LOGGING=y
CONFIG_SCSI_HPTIOP=m
CONFIG_SCSI_BUSLOGIC=m
CONFIG_SCSI_DMX3191D=m
CONFIG_SCSI_EATA=m
CONFIG_SCSI_EATA_TAGGED_QUEUE=y
CONFIG_SCSI_EATA_LINKED_COMMANDS=y
CONFIG_SCSI_EATA_MAX_TAGS=62
CONFIG_SCSI_FUTURE_DOMAIN=m
CONFIG_SCSI_GDTH=m
CONFIG_SCSI_IPS=m
CONFIG_SCSI_INITIO=m
CONFIG_SCSI_INIA100=m
CONFIG_SCSI_PPA=m
CONFIG_SCSI_IMM=m
# CONFIG_SCSI_IZIP_EPP16 is not set
# CONFIG_SCSI_IZIP_SLOW_CTR is not set
CONFIG_SCSI_MVSAS=m
CONFIG_SCSI_STEX=m
CONFIG_SCSI_SYM53C8XX_2=m
CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=1
CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS=16
CONFIG_SCSI_SYM53C8XX_MAX_TAGS=256
CONFIG_SCSI_SYM53C8XX_MMIO=y
CONFIG_SCSI_IPR=m
CONFIG_SCSI_IPR_TRACE=y
CONFIG_SCSI_IPR_DUMP=y
CONFIG_SCSI_QLOGIC_1280=m
CONFIG_SCSI_QLA_FC=m
CONFIG_SCSI_QLA_ISCSI=m
CONFIG_SCSI_LPFC=m
# CONFIG_SCSI_LPFC_DEBUG_FS is not set
CONFIG_SCSI_DC395x=m
CONFIG_SCSI_DC390T=m
CONFIG_SCSI_DEBUG=m
CONFIG_SCSI_SRP=m
CONFIG_SCSI_LOWLEVEL_PCMCIA=y
CONFIG_SCSI_DH=m
CONFIG_SCSI_DH_RDAC=m
CONFIG_SCSI_DH_HP_SW=m
CONFIG_SCSI_DH_EMC=m
CONFIG_SCSI_DH_ALUA=m
CONFIG_SCSI_OSD_INITIATOR=m
CONFIG_SCSI_OSD_ULD=m
CONFIG_SCSI_OSD_DPRINT_SENSE=1
# CONFIG_SCSI_OSD_DEBUG is not set
CONFIG_I2O_SCSI=m
# NOTE: USB_STORAGE depends on SCSI but BLK_DEV_SD may
CONFIG_ISCSI_IBFT_FIND=y
CONFIG_ISCSI_IBFT=m
--
Arkadiusz Miśkiewicz PLD/Linux Team
arekm / maven.pl http://ftp.pld-linux.org/
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