Oracle ZFS Storage Appliance: Writes to an iSCSI or FC LUN fail with medium errors, filesystem becomes read-only
Last updated on JANUARY 05, 2018
Applies to:Oracle ZFS Storage ZS3-BA - Version All Versions and later
Oracle ZFS Storage ZS4-4 - Version All Versions and later
Oracle ZFS Storage Appliance Racked System ZS4-4 - Version All Versions and later
Sun Storage 7310 Unified Storage System - Version All Versions and later
Sun ZFS Storage 7120 - Version All Versions and later
7000 Appliance OS (Fishworks)
On an iSCSI or FC client, a filesystem residing on a ZFSSA LUN has become read-only.
The client system log reports write failures due to "Medium Errors".
Example - on a Linux client:
After running a filesystem check (fsck, e2fsck), the filesystem can be mounted read/write. But when resuming write operations, it goes back to read-only.
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