Bug 244202
| Summary: | Boot fails if any LVM snapshots are full | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | Stephen Tweedie <sct> | ||||
| Component: | mkinitrd | Assignee: | Peter Jones <pjones> | ||||
| Status: | CLOSED ERRATA | QA Contact: | James Laska <jlaska> | ||||
| Severity: | low | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | 5.0 | CC: | jturner, k.georgiou | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | RHBA-2008-0437 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2008-05-21 15:26:19 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: | |||||||
| Attachments: |
|
||||||
Boot log from the boot failure: device-mapper: ioctl: 4.11.0-ioctl (2006-09-14) initialised: dm-devel Reading all physical volumes. This may take a while... Found volume group "spectre" using metadata type lvm2 device-mapper: snapshots: snapshot is marked invalid device-mapper: table: 253:3: snapshot: Failed to read snapshot metadata device-mapper: ioctl: error adding target to table device-mapper: reload ioctl failed: Invalid argument 10 logical volume(s) in volume group "spectre" now active nash received SIGSEGV! Backtrace: [0x804f8f4] [0xf6e420] [0x805c7b4] [0x805d327] [0x805e07b] [0x805b2c3] [0x805b4a5] [0x805b5bf] [0x805b606] [0x804cf23] [0x804f7c2] [0x804fca7] [0x81780b8] [0x8048131] Kernel panic - not syncing: Attempted to kill init! Fortunately, a readonly rescue boot off CD _does_ boot successfully, and the situation can then be recovered by removing the full snapshot volume. Created attachment 157009 [details]
this is a fix.
Fix is attached. Proposing for 5.2 .
Related to bug 244215 - activation of snapshot marked invalid. This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release. Fixed in mkinitrd-5.1.19.6-20 . Unable to reproduce on 5.1, however 5.0 appears to consistently trigger the failure. With the help of Stephen, created a 5.0 and 5.2 (snap#5 20080409) install with a full lvm snapshot, as seen below: LV VG Attr LSize Origin Snap% Move Log Copy% root VolGroup00 owi-ao 3.91G snap1 VolGroup00 Swi-I- 32.00M root 100.00 swap VolGroup00 -wi-ao 1.94G * The i386+x86_64+ppc+s390x 5.0 systems nash segfault on reboot as noted in comment#0. * The i386+x86_64+ppc+s390x 5.2 systems do not segfault upon reboot. Moving to VERIFIED An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2008-0437.html |
Description of problem: When booting off LVM, the initrd tries to activate all LVs. This fails if there are any full snapshots, and initrd fails to recover from the error, leading to a failure to boot. Version-Release number of selected component (if applicable): lvm2-2.02.16-3.el5 mkinitrd-5.1.19.6-1 How reproducible: 100%, I believe. Steps to Reproduce: 1. Create a small snapshot of the root filesystem ("lvcreate -s ...") 2. Write enough data to the root filesystem to overflow the snapshot ("lvs" will show it at 100% full) 3. Reboot Actual results: Boot fails with a nash SEGV Expected results: Should boot!