Private bug reported:
While transferring SFTP data to a KVM guest that has ECKD/DASD disks
(via virtio vda) the following error message occurs in dmesg on Ubuntu
KVM host:
[7348348.534818] dasd-eckd 0.0.d7bf: An error occurred in the DASD device
driver, reason=06
[7348348.534832] dasd(eckd): I/O status report for device 0.0.d7bf:
dasd(eckd): in req: 0000000001d2bce8 CC:00 FC:04 AC:00 SC:17
DS:0E CS:40 fcxs:01 schxs:00 RC:0
dasd(eckd): device 0.0.d7bf: Failing TCW: 0000000001d2be40
dasd(eckd): tsb->length 64
dasd(eckd): tsb->flags f1
dasd(eckd): tsb->dcw_offset 0
dasd(eckd): tsb->count 4096
dasd(eckd): residual 4068
dasd(eckd): tsb->tsa.iostat.dev_time 4993
dasd(eckd): tsb->tsa.iostat.def_time 4960
dasd(eckd): tsb->tsa.iostat.queue_time 0
dasd(eckd): tsb->tsa.iostat.dev_busy_time 0
dasd(eckd): tsb->tsa.iostat.dev_act_time 0
dasd(eckd): Sense(hex) 0- 7: 00 40 00 00 bf ff ff 00
dasd(eckd): Sense(hex) 8-15: 00 00 00 00 00 00 00 04
dasd(eckd): Sense(hex) 16-23: e5 28 50 3d d7 00 0f 00
dasd(eckd): Sense(hex) 24-31: 00 00 60 e2 00 00 05 05
dasd(eckd): 24 Byte: 0 MSG 0, no MSGb to SYSOP
Information about guest:
The guest freezes and can only be (re-)started from KVM host.
Afterwards only the (virtual) root disk is mounted, the second disk will no
longer be mounted.
See dmesg messages:
[ 10.188638] random: nonblocking pool is initialized
[ 10.210052] cgroup: new mount options do not match the existing superblock,
will be ignored
/etc/fstab (UUIDs with blkid verified)
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
# / was on /dev/vda1 during installation
UUID=be8ca44a-3ec6-48fd-80ce-bb4c8bc340ae / ext4
errors=remount-ro 0 1
# swap was on /dev/vda5 during installation
#UUID=6e906a67-d604-46ab-857c-d4cb3261bee3 none swap sw
0 0
UUID=87d096f8-7987-452b-9a00-208922abd536 /opt/batch ext4
rw,suid,dev,exec,noauto,async,atime 0 2
(last line is the disk causing issues)
'mount -a' doesn't allow to mount the disk, too.
With explicit path mount works, but guest/VM crashes again after trying to copy
again some data.
(see attached files for more logs)
** Affects: ubuntu-z-systems
Importance: Critical
Assignee: bugproxy (bugproxy)
Status: Triaged
** Tags: s390x
** Attachment added: "logs.zip"
https://bugs.launchpad.net/bugs/1723340/+attachment/4969560/+files/logs.zip
** Information type changed from Public to Private
** Package changed: zfcpdump-kernel (Ubuntu) => ubuntu-z-systems
** Changed in: ubuntu-z-systems
Status: New => Triaged
** Changed in: ubuntu-z-systems
Importance: Undecided => Critical
** Changed in: ubuntu-z-systems
Assignee: (unassigned) => bugproxy (bugproxy)
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https://bugs.launchpad.net/bugs/1723340
Title:
ECKD/DASD problem in KVM guest
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