Date: Sat, 18 Jan 2020 05:18:45 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 243421] Zfs send/recv backup over USB 3.0/eSATA crashes /dev after 466 GB Message-ID: <bug-243421-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D243421 Bug ID: 243421 Summary: Zfs send/recv backup over USB 3.0/eSATA crashes /dev after 466 GB Product: Base System Version: 12.1-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: jon@xyinn.org Hello all, I made a post earlier in the week on the FreeBSD forums in extensive detail= to see if I could get a solution before having to file a bug report (https://forums.freebsd.org/threads/dev-directory-basically-acompletely-emp= ty-after-4-8-hours-after-i-start-an-external-drive-over-usb-backup-zfs-send= -recv.73699/). Since after doing various tests and purchasing new equipment (with FreeBSD compatible parts), it still didn't solve the issue. TLDR: For whatever reason when I do a zfs send | recv from my OS pool (tank= ) to my backup pool (backup) over USB 3.0 or eSATA, once the stream hits 466 GB = (469 GB in this particular dataset, and a few hundred for GB in other datasets),= the zfs program crashes, and the entire /dev directory vanishes. The only thing left in /dev after this is "null". This effectively means that even though FreeBSD is still running, most applications stop functioning since they can= 't find any resources in /dev (Example: zpool status would no longer work sinc= e it can't communicate with the hardware via /dev/zfs). It's very weird since I don't see any error messages in 'dmesg'. It's like it's a "clean crash". At the moment I will leave FreeBSD running on the box to see if we can reso= lve this, but if not I will need to switch back to Linux since this is literally preventing me from making my external pool backups. Thank you and please let me know if there is any other info I can provide. --=20 You are receiving this mail because: You are the assignee for the bug.=
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