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Vladimir Smirnov
Do your duty, come what usual
Do your duty, come what usual
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Чертова тенденция всё усложнять без необходимости! Если программа предназначена для сложных задач (3DMAX, ANSYS, Materials Studio) она может быть сложной в управлении; если для простых -- не может. Такие уродства, как grub2, systemd, pulseaudio -- не просто сложны в управлении, они ещё толком и не документированы.
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In "my" type of distributed HPC & GPU envs. we are using Firefox as a default. Just remember: NEW about:config (RMB at any place) Var "browser.disableResetPrompt" = true. Hack, I know. But it helps.
UPD: and don't forget about "browser.cache.disk.parent_directory"
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AD tricks: the DNS updating is broken for long. For kerberized stuff to work correctly, before adding Linux client with static IP to the domain that is served by Windows by 'net ads join', launch dnsmgmt.msc and create DNS records. Note: pam_krb5+nss_ldap logins are working even with broken client krb5.keytab.
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Supermicro X10SRA-F: as of 2015/16, 2011v3 platform is immature and unfinished. Stock graphical BIOS was awkward, clumsy and buggy. SR-IOV support is buggy. And if you install video card and select "EFI' for its bootstrap, there will be no more graphical BIOS screen at all (black screen), though BIOS code remains operational.
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Родные линуксовые средства хранения данных (mdadm, btrfs) в части удобства администрирования и качества документации вчистую сливают ZFS. В btrfs нет снапшотов (только клоны) и нет команды rollback. Об mdadm нужно запомнить главное: "mdadm --zero-superblock </dev/...> --force".
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ZFS: Kingston SSDNow SSDs can NOT be used in RaidZ2 (pool of 4 SSDNow-s and two Intel SSDs): numerous checksum errors on powerup, pool corruption (only 'import -F' works, undeletable files in datasets). Intel SSDs (3500) are Ok.
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Experiments with IB (Arch, 3.18ck): for QLogic cards, if opensm complains about "sm port is down" and ibstate shows physical state as "sleep", issue "ibportstate -D 0 1 enable" (-D HCA# Port#).
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For long time, Fedora uses systemd, but IB subnet manager is launched from shell script 'while true; do /usr/bin/opensm; sleep 30; done' that, in turn, is called from unit file. Нахрен тогда вообще системд нужен?
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