APAR status
Closed as program error.
Error description
A vSnap host kernel panic may occur during a zfs pool scrub. As a result the vSnap host may repeatedly crash and reboot. In the crash dump (vmcore-dmesg.txt) under /var/crash, the following call trace is seen at the end of the file: Call Trace: rs_get_start+0xc/0x20 [zfs] scan_io_queue_fetch_ext+0x52/0x90 [zfs] scan_io_queues_run_one+0xde/0x250 [zfs] taskq_thread+0x213/0x3d0 [spl] ? wake_up_q+0x70/0x70 kthread+0xf8/0x130 ? task_done+0x80/0x80 [spl] ? kthread_bind+0x10/0x10 ret_from_fork+0x35/0x40 IBM Spectrum Protect Plus Versions Affected: IBM Spectrum Protect Plus 10.1.5 | MDVREGR 10.1.5-5737SPLUS | Initial Impact: Medium Additional Keywords: SPP, SPPLUS, TS003811628, crash, zfs
Local fix
1. Find the pool ID with the command : zpool status 2. Cancel the scrub using the command : zpool scrub -s vpool<ID> The scrub can be resumed once updated to the fixing version.
Problem summary
**************************************************************** * USERS AFFECTED: * * IBM Spectrum Protect Plus level 10.1.5 * **************************************************************** * PROBLEM DESCRIPTION: * * See Error Description * **************************************************************** * RECOMMENDATION: * * Apply fixing level when available. This problem is currently * * projected to be fixed in IBM Spectrum Protect Plus level * * 10.1.5.2218 and 10.1.6. Note that this is subject to change * * at the discretion of IBM. * ****************************************************************
Problem conclusion
The kernel module for the filesystem contained an incorrect check for a null pointer during pool scrub. This resulted in a kernel panic and system crash. The problem has been resolved in an updated version of the kernel module which has been incorporated into a newer version of vSnap.
Temporary fix
Comments
APAR Information
APAR number
IT33425
Reported component name
SP PLUS
Reported component ID
5737SPLUS
Reported release
A15
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2020-07-06
Closed date
2020-07-27
Last modified date
2020-07-27
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
SP PLUS
Fixed component ID
5737SPLUS
Applicable component levels
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSNQFQ","label":"IBM Spectrum Protect Plus"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"A15","Line of Business":{"code":"LOB26","label":"Storage"}}]
Document Information
Modified date:
31 January 2024