Package: initramfs-tools Version: 0.98.8 Severity: normal Hello,
On my box (Sunblade 1000) the LVM initialization does not happen fast enough, so mounting root filesystem fails in roughly 95% of the cases: [ 90.520448] qla2xxx 0001:00:04.0: Allocated (252 KB) for firmware dump... [ 90.764373] qla2xxx 0001:00:04.0: LIP reset occurred (f8e8). [ 90.867334] scsi0 : qla2xxx [ 90.935081] qla2xxx 0001:00:04.0: LIP occurred (f7f7). [ 91.031152] qla2xxx 0001:00:04.0: LOOP UP detected (1 Gbps). [ 91.135284] qla2xxx 0001:00:04.0: [ 91.135288] QLogic Fibre Channel HBA Driver: 8.03.05-k0 [ 91.135293] QLogic QLA22xx - [ 91.135297] ISP2200: PCI (66 MHz) @ 0001:00:04.0 hdma-, host#=0, fw=2.02.08 TP Begin: Loading essential drivers ... done. Begin: Run[ 91.621764] device-mapper: uevent: version 1.0.3 ning /scripts/init-premount ... don[ 91.713376] device-mapper: ioctl: 4.18.0-ioctl (2010-06-29) initialised: dm-de...@redhat.com e. Begin: Mounting root file system ... Begin: Running /scrip[ 91.879330] scsi 0:0:0:0: Direct-Access HITACHI DKR1C-J072FC D7V5 PQ: 0 ANSI: 3 ts/local-top ... [ 92.031443] sd 0:0:0:0: Attached scsi generic sg2 type 0 [ 92.035463] sd 0:0:0:0: [sdb] 142410400 512-byte logical blocks: (72.9 GB/67.9 GiB) [ 92.054186] sd 0:0:0:0: [sdb] Write Protect is off [ 92.061913] sd 0:0:0:0: [sdb] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 92.101015] sdb: sdb1 sdb2 sdb3 [ 92.607567] sd 0:0:0:0: [sdb] Attached SCSI disk Volume group "debian" not found Skipping volume group debian Unable to find LVM volume debian/root done. Begin: Waiting for root file system ... done. Gave up waiting for root device. Common problems: - Boot args (cat /proc/cmdline) - Check rootdelay= (did the system wait long enough?) - Check root= (did the system wait for the right device?) - Missing modules (cat /proc/modules; ls /dev) ALERT! /dev/mapper/debian-root does not exist. Dropping to a shell! BusyBox v1.17.1 (Debian 1:1.17.1-10) built-in shell (ash) Enter 'help' for a list of built-in commands. /bin/sh: can't access tty; job control turned off (initramfs) Running 'vgchange -a y' at this point activates all volume groups and exiting the initramfs shell causes the boot to proceed normally. The problem can be solved by passing either 'scsi_mod.scan=sync' or 'rootdelay=20' on the command line. The rootdelay option handling is slightly counterintuitive: in /scripts/init-top/udev we will sleep for $ROOTDELAY seconds if it is set, however if rootdelay= is not specified on the command line we will not sleep here, and boot will fail. in /scripts/local ROOTDELAY is set to a default of 30 seconds if rootdelay= is not set, but sleeping here does not help, as the LVM devices will not magically appear without vgchange being called, and that's not going to happen, because /scripts/local/top have been run at this point already. There are a few options of fixing it in the generic case: 1. Make scsi_mod.scan=sync the default. The implication of this are unclear to me. 2. Try to activate the volume groups at the end of the waiting-for-root time in /scripts/local. 3. Come up with some way of asynchronous notification of volume groups being available for activation, and invoke vgchange on this notification. I clearly don't know about how LVM works internally to accomplish something like this, an udev hook, perhaps? While the bug is fairly harmless and plenty of workarounds exist, I consider fixing it desirable, as it would case a boot failure on some systems immediately after installation, and figuring out what's going on may be a bit of a challenge for the user. Best regards, -- Jurij Smakov ju...@wooyd.org Key: http://www.wooyd.org/pgpkey/ KeyID: C99E03CC -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20110306165327.ga3...@droopy.oc.cox.net
