Date: Mon, 4 May 2020 23:51:47 +0200 From: Harry Schmalzbauer <freebsd@omnilan.de> To: freebsd-current@freebsd.org Subject: zfs.core, 'send' crashing - how to debug offline? Message-ID: <dc0331ce-2322-fab2-5e97-7b5cffd79a2a@omnilan.de>
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Hello, playing with -current snapshot provides all kinds of surprises :-) The one regarding the topic: 'zfs send' aborts with "invalid argument". The machine in question doesn't have internet access (but local FreeBSD FTP mirror, so I managed to install matching base-dbg). What debugger am I supposed to use these days for -current? Sorry for that ignorant/stupid question – all I know about the transition to llvm/clang is that it's still 'cc' ;-) There's still /usr/libexe/kdgb, but I can't use it for my userland core dump, can I? Not beeing able to dump ZFS is a very severe problem for me and I'd like to provide at least some useful problem reports. Any help highly appreciated, thanks, -harry P.S. No matter if I try to send snapshots or unmounted fielsystems - 'send' is always aborting (scrub doesn't detect inconsistencies). P.P.S.: sendmail(8) is back in base!?! and DMA gone???????? P.P.P.S.: efi\freebsd\loader.efi doesn't work well – raised and already commented by bcran@ P.P.P.P.S: kern.vt.fb.default_mode vs. efi_max_resolution for loader.conf(8) was hard to invalidate reading vt(4) – still completely unsure how/if to change non-KMS UEFI/GOP resolution outside loader(8).
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