Bug 488679
| Summary: | /dev/root automatically unlinked? | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Tetsuo Handa <penguin-kernel> |
| Component: | mkinitrd | Assignee: | Peter Jones <pjones> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | low | ||
| Version: | 10 | CC: | hdegoede, katzj, pjones, wtogami |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2009-05-06 16:48:34 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
There are a few timing things which are resolved with the current mkinitrd in Fedora 10 updates including what looks like this one |
Description of problem: It seems to me that /dev/root is deleted immediately after /dev/root was created by "mkrootdev" command, resulting boot failure. Version-Release number of selected component (if applicable): Linux kernel 2.6.29-rcX on Fedora 10. How reproducible: Almost always. Steps to Reproduce: 1. Compile kernel 2.6.29-rcX on Fedora 10. 2. Reboot. Actual results: Mounting /dev/root on /sysroot fails. Expected results: Mounting /dev/root on /sysroot succeeds. Additional info: I'm using Fedora 10 on VMware Workstation 6.5.1 . Below is /init taken from /boot/initrd-2.6.29-rc7.img . ---------- #!/bin/nash mount -t proc /proc /proc setquiet echo Mounting proc filesystem echo Mounting sysfs filesystem mount -t sysfs /sys /sys echo Creating /dev mount -o mode=0755 -t tmpfs /dev /dev mkdir /dev/pts mount -t devpts -o gid=5,mode=620 /dev/pts /dev/pts mkdir /dev/shm mkdir /dev/mapper echo Creating initial device nodes mknod /dev/null c 1 3 mknod /dev/zero c 1 5 mknod /dev/systty c 4 0 mknod /dev/tty c 5 0 mknod /dev/console c 5 1 mknod /dev/ptmx c 5 2 mknod /dev/fb c 29 0 mknod /dev/tty0 c 4 0 mknod /dev/tty1 c 4 1 mknod /dev/tty2 c 4 2 mknod /dev/tty3 c 4 3 mknod /dev/tty4 c 4 4 mknod /dev/tty5 c 4 5 mknod /dev/tty6 c 4 6 mknod /dev/tty7 c 4 7 mknod /dev/tty8 c 4 8 mknod /dev/tty9 c 4 9 mknod /dev/tty10 c 4 10 mknod /dev/tty11 c 4 11 mknod /dev/tty12 c 4 12 mknod /dev/ttyS0 c 4 64 mknod /dev/ttyS1 c 4 65 mknod /dev/ttyS2 c 4 66 mknod /dev/ttyS3 c 4 67 /lib/udev/console_init tty0 daemonize --ignore-missing /bin/plymouthd plymouth --show-splash echo Setting up hotplug. hotplug echo Creating block device nodes. mkblkdevs echo Creating character device nodes. mkchardevs echo "Loading scsi_transport_spi module" modprobe -q scsi_transport_spi echo "Loading mptbase module" modprobe -q mptbase echo "Loading mptscsih module" modprobe -q mptscsih echo "Loading mptspi module" modprobe -q mptspi modprobe scsi_wait_scan rmmod scsi_wait_scan mkblkdevs echo Creating root device. mkrootdev -t ext3 -o defaults,ro UUID=47c7cb9e-a15b-4554-9fce-60cd7c84c8b2 echo Mounting root filesystem. mount /sysroot cond -ne 0 plymouth --hide-splash echo Setting up other filesystems. setuproot loadpolicy plymouth --newroot=/sysroot echo Switching to new root and running init. switchroot echo Booting has failed. sleep -1 ---------- Under specific circumstances, mounting /dev/root on /sysroot fails. ---------- Creating root device. Mounting root filesystem. mount: could not find filesystem '/dev/root' ---------- Cases where mount (almost always) suceeds: (1) Commenting out the "echo Mounting root filesystem." line. Whether "Mounting root filesystem." is printed or not should not affect whether mounting /dev/root on /sysroot suceeds or not. (2) Booting with 1 virtual CPU or booting with "nosmp" option. Case where mount (sometimes) fails: (3) Inserting "find /dev" line before "echo Mounting root filesystem." line and booting with 1 virtual CPU. Whether files under /dev/ directory are printed or not should not affect whether mounting /dev/root on /sysroot suceeds or not. Also, note that /dev/root is not printed by "find /dev" when fails. This bug is similar to #481761 and #475773 , but I'm not using LVM nor RAID. Really plain single ext3 partion. # fdisk -l Disk /dev/sda: 6442 MB, 6442450944 bytes 255 heads, 63 sectors/track, 783 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x0001fbd1 Device Boot Start End Blocks Id System /dev/sda1 * 1 783 6289416 83 Linux This seems to be timing dependent problem.