Oracle ZFS Storage Appliance: Panic - "dirtying snapshot !"

Asset ID:	1-72-2097924.1
Update Date:	2018-01-05
Keywords:

Solution Type Problem Resolution Sure

Solution 2097924.1 : Oracle ZFS Storage Appliance: Panic - "dirtying snapshot !"

Applies to:

Sun ZFS Storage 7420 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7120 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7320 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS3-4 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS3-2 - Version All Versions to All Versions [Release All Releases]
7000 Appliance OS (Fishworks)

Symptoms

System panic:

Dec 14 15:41:45 sn02 ^Mpanic[cpu18]/thread=ffffff01ec84cc20:
Dec 14 15:41:45 sn02 genunix: [ID 599946 kern.notice] dirtying snapshot!
Dec 14 15:41:45 sn02 unix: [ID 100000 kern.notice]
Dec 14 15:41:45 sn02 genunix: [ID 802836 kern.notice] ffffff01ec84b4c0 fffffffff7a3f007 ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84b520 zfs:dnode_setdirty+101 ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84b630 zfs:dbuf_dirty_impl+6fe ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84b650 zfs:dbuf_dirty+1b ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84b760 zfs:dbuf_dirty_impl+5f2 ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84b780 zfs:dbuf_dirty+1b ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84b890 zfs:dbuf_dirty_impl+5f2 ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84b8b0 zfs:dbuf_dirty+1b ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84b9c0 zfs:dbuf_dirty_impl+5f2 ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84b9e0 zfs:dbuf_dirty+1b ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84baf0 zfs:dbuf_dirty_impl+5f2 ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84bb10 zfs:dbuf_dirty+1b ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84bc20 zfs:dbuf_dirty_impl+5f2 ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84bc40 zfs:dbuf_dirty+1b ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84bd50 zfs:dbuf_dirty_impl+5f2 ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84bd70 zfs:dbuf_dirty+1b ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84bdd0 zfs:dnode_setdirty+dd ()
Dec 14 15:41:45 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84bee0 zfs:dbuf_dirty_impl+74b ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84bf00 zfs:dbuf_dirty+1b ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84bf40 zfs:dbuf_will_dirty+6f ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84bfe0 zfs:sa_attr_op+ba ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84c050 zfs:sa_bulk_update_impl+72 ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84c0a0 zfs:sa_bulk_update+44 ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84c220 zfs:zfs_link_create+242 ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84c2f0 zfs:zfs_link+371 ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84c370 genunix:fop_link+121 ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84c5b0 nfssrv:rfs4_op_link+1d1 ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84c790 nfssrv:rfs4_compound+34f ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84c810 nfssrv:rfs4_dispatch+180 ()
Dec 14 15:41:46 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84c930 nfssrv:common_dispatch+a2b ()
Dec 14 15:41:44 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84c950 nfssrv:rfs_dispatch+2d ()
Dec 14 15:41:44 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84ca30 rpcmod:svc_process_request+184 ()
Dec 14 15:41:44 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84ca80 rpcmod:stp_dispatch+b9 ()
Dec 14 15:41:44 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84cb10 genunix:taskq_d_thread+c1 ()
Dec 14 15:41:44 sn02 genunix: [ID 655072 kern.notice] ffffff01ec84cb20 unix:thread_start+8 ()
Dec 14 15:41:44 sn02 unix: [ID 100000 kern.notice]
Dec 14 15:41:44 sn02 genunix: [ID 672855 kern.notice] syncing file systems...
Dec 14 15:41:44 sn02 unix: [ID 836849 kern.notice]
Dec 14 15:41:44 sn02 ^Mpanic[cpu18]/thread=ffffff01ec84cc20:
Dec 14 15:41:44 sn02 genunix: [ID 715357 kern.notice] panic sync timeout
Dec 14 15:41:44 sn02 unix: [ID 100000 kern.notice]
Dec 14 15:41:44 sn02 genunix: [ID 111219 kern.notice] dumping to /dev/zvol/dsk/system/dump, offset 65536, content: kernel + curproc
Dec 14 15:45:44 sn02 genunix: [ID 100000 kern.notice]
Dec 14 15:45:44 sn02 genunix: [ID 665016 kern.notice] ^M100% done: 6991653 pages dumped,
Dec 14 15:45:44 sn02 genunix: [ID 851671 kern.notice] dump succeeded

Cause

Panic happens when creating hard link to a snapshot file.

Bug 20241825 - zfs_link(): dirtying snapshot!

Solution

Please engage Oracle Support via a Service Request to provide access to Appliance Firmware Micro Release AK 2013.1 Update 4.4 which contains the fix for this issue.

References

<BUG:20241825> - ZFS_LINK: DIRTYING SNAPSHOT!

Attachments

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