{"id":83100,"date":"2020-05-28T13:42:10","date_gmt":"2020-05-28T11:42:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/administrirovanie\/bekap-hranilishhe-dlya-tysyach-virtualnyh-mashin-svobodnymi-instrumentami"},"modified":"2020-05-28T13:42:10","modified_gmt":"2020-05-28T11:42:10","slug":"bekap-hranilishhe-dlya-tysyach-virtualnyh-mashin-svobodnymi-instrumentami","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/bekap-hranilishhe-dlya-tysyach-virtualnyh-mashin-svobodnymi-instrumentami","title":{"rendered":"Z\u00e1lohovac\u00ed \u00falo\u017ei\u0161t\u011b pro tis\u00edce virtu\u00e1ln\u00edch stroj\u016f pomoc\u00ed voln\u00fdch n\u00e1stroj\u016f","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Z\u00e1lohovac\u00ed \u00falo\u017ei\u0161t\u011b pro tis\u00edce virtu\u00e1ln\u00edch stroj\u016f pomoc\u00ed voln\u00fdch n\u00e1stroj\u016f\" src=\"\/wp-content\/uploads\/2020\/05\/e1be85f9fdec702ce8db043ac72dd507.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Ahoj, ned\u00e1vno jsem se setkal se zaj\u00edmav\u00fdm \u00fakolem nastavit \u00falo\u017ei\u0161t\u011b pro z\u00e1lohov\u00e1n\u00ed velk\u00e9ho mno\u017estv\u00ed blokov\u00fdch za\u0159\u00edzen\u00ed.<\/p>\n<p><\/p>\n<p>Ka\u017ed\u00fd t\u00fdden prov\u00e1d\u00edme z\u00e1lohov\u00e1n\u00ed v\u0161ech virtu\u00e1ln\u00edch stroj\u016f v na\u0161em cloudu, a proto mus\u00edme um\u011bt spravovat tis\u00edce z\u00e1loh a d\u011blat to co nejrychleji a nejefektivn\u011bji.<\/p>\n<p><\/p>\n<p>Bohu\u017eel standardn\u00ed konfigurace <strong>RAID5<\/strong>, <strong>RAID6<\/strong> v tomto p\u0159\u00edpad\u011b nebudou vyhovovat, proto\u017ee proces obnovy na tak velk\u00fdch disc\u00edch, jako m\u00e1me my, bude nesm\u00edrn\u011b dlouh\u00fd a pravd\u011bpodobn\u011b nikdy neskon\u010d\u00ed.<\/p>\n<p><\/p>\n<p>Pod\u00edvejme se na alternativy:<\/p>\n<p><\/p>\n<p><strong><noindex><a rel=\"nofollow\" href=\"https:\/\/docs.min.io\/docs\/minio-erasure-code-quickstart-guide.html\">Erasure Coding<\/a><\/noindex><\/strong> \u2014 analog RAID5, RAID6, ale s nastavovatelnou \u00farovn\u00ed paritn\u00ed kontroly. Z\u00e1lohov\u00e1n\u00ed se prov\u00e1d\u00ed nikoli po bloc\u00edch, ale pro ka\u017ed\u00fd objekt zvl\u00e1\u0161\u0165. Nejsnaz\u0161\u00ed zp\u016fsob, jak vyzkou\u0161et erasure coding, je nasadit <noindex><a rel=\"nofollow\" href=\"https:\/\/min.io\/\">minio<\/a><\/noindex>.<\/p>\n<p><\/p>\n<p><strong><noindex><a rel=\"nofollow\" href=\"https:\/\/openzfs.github.io\/openzfs-docs\/Basic%20Concepts\/dRAID%20Howto.html?highlight=draid\">DRAID<\/a><\/noindex><\/strong> \u2014 je to v sou\u010dasnosti je\u0161t\u011b nevydan\u00e1 funkce ZFS. Na rozd\u00edl od RAIDZ m\u00e1 DRAID distribuovan\u00fd paritn\u00ed blok a p\u0159i obnov\u011b se okam\u017eit\u011b zapoj\u00ed v\u0161echny disky v poli, co\u017e l\u00e9pe odol\u00e1v\u00e1 chyb\u00e1m disk\u016f a rychleji se obnovuje po v\u00fdpadku. <\/p>\n<p><noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<p><img decoding=\"async\" alt=\"Z\u00e1lohovac\u00ed \u00falo\u017ei\u0161t\u011b pro tis\u00edce virtu\u00e1ln\u00edch stroj\u016f pomoc\u00ed voln\u00fdch n\u00e1stroj\u016f\" src=\"\/wp-content\/uploads\/2020\/05\/aa867bbd4f52501c8708636d2cd1fb27.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Z\u00e1lohovac\u00ed \u00falo\u017ei\u0161t\u011b pro tis\u00edce virtu\u00e1ln\u00edch stroj\u016f pomoc\u00ed voln\u00fdch n\u00e1stroj\u016f\" src=\"\/wp-content\/uploads\/2020\/05\/47b0a233d5db5b66472e17fb5a822fad.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p>K dispozici je server <strong>Fujitsu Primergy RX300 S7<\/strong> s procesorem <strong>Intel Xeon CPU E5-2650L 0 @ 1.80GHz<\/strong>, dev\u00edti moduly opera\u010dn\u00ed pam\u011bti <strong>Samsung DDR3-1333 8Gb PC3L-10600R ECC Registered (M393B1K70DH0-YH9)<\/strong>, diskov\u00e1 schr\u00e1nka <strong>Supermicro SuperChassis 847E26-RJBOD1<\/strong>, p\u0159ipojen\u00e1 p\u0159es <strong>Dual LSI SAS2X36 Expander<\/strong> a 45 disk\u016f <strong>Seagage ST6000NM0115-1YZ110<\/strong> o <strong>6TB<\/strong> ka\u017ed\u00fd.<\/p>\n<p><\/p>\n<p>Ne\u017e n\u011bco rozhodneme, mus\u00edme nejprve v\u0161e \u0159\u00e1dn\u011b otestovat.<\/p>\n<p><\/p>\n<p>K tomu jsem se p\u0159ipravil a provedl testov\u00e1n\u00ed r\u016fzn\u00fdch konfigurac\u00ed. K tomu jsem pou\u017eil minio, kter\u00e9 slou\u017eilo jako S3 backend a spou\u0161t\u011bl jsem ho v r\u016fzn\u00fdch re\u017eimech s r\u016fzn\u00fdm po\u010dtem c\u00edl\u016f.<\/p>\n<p><\/p>\n<p>Hlavn\u011b jsem testoval p\u0159\u00edpad minio v erasure coding vs software raid se stejn\u00fdm po\u010dtem disk\u016f a paritn\u00edch disk\u016f, toti\u017e: RAID6, RAIDZ2 a DRAID2.<\/p>\n<p><\/p>\n<blockquote><p>Pro informaci: kdy\u017e spust\u00edte minio s jedin\u00fdm c\u00edlem, pak minio pracuje v re\u017eimu S3 br\u00e1ny a poskytuje va\u0161e lok\u00e1ln\u00ed souborov\u00fd syst\u00e9m jako S3 \u00falo\u017ei\u0161t\u011b. Pokud v\u0161ak spust\u00edte minio s n\u011bkolika c\u00edli, automaticky se aktivuje re\u017eim Erasure Coding, kter\u00fd rozprost\u0159e data mezi va\u0161imi c\u00edli a zajist\u00ed odolnost v\u016f\u010di chyb\u00e1m.<\/p>\n<p>Minio standardn\u011b rozd\u011bluje c\u00edle do skupin po 16 disc\u00edch, kde na ka\u017edou skupinu p\u0159ipadnou 2 parity. To znamen\u00e1, \u017ee sou\u010dasn\u011b mohou selhat dva disky bez ztr\u00e1ty dat.<\/p><\/blockquote>\n<p>Pro testov\u00e1n\u00ed v\u00fdkonu jsem pou\u017eil 16 disk\u016f po 6TB ka\u017ed\u00fd a zapisoval na n\u011b mal\u00e9 objekty o velikosti 1MB, co\u017e co nejp\u0159esn\u011bji odr\u00e1\u017eelo na\u0161i budouc\u00ed z\u00e1t\u011b\u017e, proto\u017ee v\u0161echny modern\u00ed n\u00e1stroje pro z\u00e1lohov\u00e1n\u00ed d\u011bl\u00ed data na bloky o n\u011bkolika megabajtech a zapisuj\u00ed je t\u00edmto zp\u016fsobem.<\/p>\n<p><\/p>\n<p>Pro proveden\u00ed benchmarku byla pou\u017eita utilita s3bench spu\u0161t\u011bn\u00e1 na vzd\u00e1len\u00e9m serveru, kter\u00e1 do Minio pos\u00edlala des\u00edtky tis\u00edc takov\u00fdch objekt\u016f ve stovk\u00e1ch vl\u00e1ken. Pot\u00e9 se stejn\u00fdm zp\u016fsobem sna\u017eila je z\u00edskat zp\u011bt.<\/p>\n<p><\/p>\n<p>V\u00fdsledky benchmarku jsou uvedeny v n\u00e1sleduj\u00edc\u00ed tabulce:<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Z\u00e1lohovac\u00ed \u00falo\u017ei\u0161t\u011b pro tis\u00edce virtu\u00e1ln\u00edch stroj\u016f pomoc\u00ed voln\u00fdch n\u00e1stroj\u016f\" src=\"\/wp-content\/uploads\/2020\/05\/218a14dcd9311e4b350a3b7aafbd290c.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Jak vid\u00edme, Minio v re\u017eimu vlastn\u00edho erasure coding funguje v\u00fdrazn\u011b h\u016f\u0159e p\u0159i z\u00e1pisu ne\u017e Minio spu\u0161t\u011bn\u00e9 nad softwarov\u00fdm RAID6, RAIDZ2 a DRAID2 ve stejn\u00e9 konfiguraci.<\/p>\n<p><\/p>\n<p>Zvl\u00e1\u0161\u0165 m\u011b <noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/sds_ru\/15987\">po\u017e\u00e1dali<\/a><\/noindex> o testov\u00e1n\u00ed Minio na ext4 vs XFS. \u00da\u017easn\u00e9 je, \u017ee pro m\u016fj typ z\u00e1t\u011b\u017ee byla XFS v\u00fdrazn\u011b pomalej\u0161\u00ed ne\u017e ext4.<\/p>\n<p><\/p>\n<p>V prvn\u00ed sad\u011b test\u016f Mdadm prok\u00e1zal p\u0159evahu nad ZFS, ale pozd\u011bji <noindex><a rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/users\/gmelikov\/\" class=\"user_link\">gmelikov<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/t.me\/sds_ru\/15724\">nazna\u010dil<\/a><\/noindex>, \u017ee lze zlep\u0161it v\u00fdkon ZFS nastaven\u00edm n\u00e1sleduj\u00edc\u00edch mo\u017enost\u00ed:<\/p>\n<p><\/p>\n<pre><code class=\"plaintext\">xattr=sa atime=off recordsize=1M<\/code><\/pre>\n<p><\/p>\n<p>a po tomto testy s ZFS byly mnohem lep\u0161\u00ed.<\/p>\n<p><\/p>\n<p>Tak\u00e9 je mo\u017en\u00e9 si v\u0161imnout, \u017ee DRAID nenab\u00edz\u00ed v\u00fdznamn\u00e9 zv\u00fd\u0161en\u00ed v\u00fdkonu oproti RAIDZ, ale teoreticky by m\u011bl b\u00fdt mnohem bezpe\u010dn\u011bj\u0161\u00ed.<\/p>\n<p><\/p>\n<p>V posledn\u00edch dvou testech jsem tak\u00e9 zkusil vyv\u00e9st metadata (special) a ZIL (log) na zrcadlo z SSD. Ale vyveden\u00ed metadat nep\u0159ineslo v\u00fdznamn\u00e9 zv\u00fd\u0161en\u00ed rychlosti z\u00e1pisu, a p\u0159i vyv\u00e1d\u011bn\u00ed ZIL jsem se <noindex><a rel=\"nofollow\" href=\"https:\/\/www.memory4less.com\/intel-ssd-ssdsc2ki128g8\">SSDSC2KI128G8<\/a><\/noindex> dostal na strop se 100% vyu\u017eit\u00edm, tak\u017ee tento test pova\u017euji za ne\u00fasp\u011b\u0161n\u00fd. Nevylu\u010duji, \u017ee kdybych m\u011bl rychlej\u0161\u00ed SSD disky, mohlo by to v\u00fdznamn\u011b zlep\u0161it m\u00e9 v\u00fdsledky, ale bohu\u017eel je nem\u00e1m.<\/p>\n<p><\/p>\n<p>Nakonec jsem se rozhodl z\u016fstat u DRAID a i p\u0159es jeho beta status je to nejrychlej\u0161\u00ed a nejefektivn\u011bj\u0161\u00ed \u0159e\u0161en\u00ed pro na\u0161e pot\u0159eby.<\/p>\n<p><\/p>\n<p>Vytvo\u0159il jsem jednoduch\u00fd DRAID2 v konfiguraci se t\u0159emi skupinami a dv\u011bma distribuovan\u00fdmi n\u00e1hradami:<\/p>\n<p><\/p>\n<pre><code class=\"bash\"># zpool status data\n  pool: data\n state: ONLINE\n  scan: none requested\nconfig:\n\n    NAME                 STATE     READ WRITE CKSUM\n    data                 ONLINE       0     0     0\n      draid2:3g:2s-0     ONLINE       0     0     0\n        sdy              ONLINE       0     0     0\n        sdam             ONLINE       0     0     0\n        sdf              ONLINE       0     0     0\n        sdau             ONLINE       0     0     0\n        sdab             ONLINE       0     0     0\n        sdo              ONLINE       0     0     0\n        sdw              ONLINE       0     0     0\n        sdak             ONLINE       0     0     0\n        sdd              ONLINE       0     0     0\n        sdas             ONLINE       0     0     0\n        sdm              ONLINE       0     0     0\n        sdu              ONLINE       0     0     0\n        sdai             ONLINE       0     0     0\n        sdaq             ONLINE       0     0     0\n        sdk              ONLINE       0     0     0\n        sds              ONLINE       0     0     0\n        sdag             ONLINE       0     0     0\n        sdi              ONLINE       0     0     0\n        sdq              ONLINE       0     0     0\n        sdae             ONLINE       0     0     0\n        sdz              ONLINE       0     0     0\n        sdan             ONLINE       0     0     0\n        sdg              ONLINE       0     0     0\n        sdac             ONLINE       0     0     0\n        sdx              ONLINE       0     0     0\n        sdal             ONLINE       0     0     0\n        sde              ONLINE       0     0     0\n        sdat             ONLINE       0     0     0\n        sdaa             ONLINE       0     0     0\n        sdn              ONLINE       0     0     0\n        sdv              ONLINE       0     0     0\n        sdaj             ONLINE       0     0     0\n        sdc              ONLINE       0     0     0\n        sdar             ONLINE       0     0     0\n        sdl              ONLINE       0     0     0\n        sdt              ONLINE       0     0     0\n        sdah             ONLINE       0     0     0\n        sdap             ONLINE       0     0     0\n        sdj              ONLINE       0     0     0\n        sdr              ONLINE       0     0     0\n        sdaf             ONLINE       0     0     0\n        sdao             ONLINE       0     0     0\n        sdh              ONLINE       0     0     0\n        sdp              ONLINE       0     0     0\n        sdad             ONLINE       0     0     0\n    spares\n      s0-draid2:3g:2s-0  AVAIL   \n      s1-draid2:3g:2s-0  AVAIL   \n\nerrors: No known data errors<\/code><\/pre>\n<p>Dobr\u00e1, co se \u00falo\u017ei\u0161t\u011b t\u00fd\u010de, m\u00e1me to vy\u0159e\u0161en\u00e9; nyn\u00ed k tomu, \u010d\u00edm budeme z\u00e1lohovat. Zde bych cht\u011bl hned zm\u00ednit t\u0159i \u0159e\u0161en\u00ed, kter\u00e1 jsem m\u011bl mo\u017enost vyzkou\u0161et, a to jsou:<\/p>\n<p><\/p>\n<p><strong><noindex><a rel=\"nofollow\" href=\"https:\/\/benji-backup.me\">Benji Backup<\/a><\/noindex><\/strong> \u2014 fork <noindex><a rel=\"nofollow\" href=\"http:\/\/backy2.com\/\">Backy2<\/a><\/noindex>, specializovan\u00e9 \u0159e\u0161en\u00ed pro z\u00e1lohov\u00e1n\u00ed blokov\u00fdch za\u0159\u00edzen\u00ed, m\u00e1 \u00fazkou integraci s Ceph. Umo\u017e\u0148uje z\u00edsk\u00e1vat diffy mezi snapshoty a vytv\u00e1\u0159et z nich inkrement\u00e1ln\u00ed z\u00e1lohu. Podporuje velk\u00e9 mno\u017estv\u00ed backend\u016f pro ukl\u00e1d\u00e1n\u00ed, mezi kter\u00fdmi jsou jak lok\u00e1ln\u00ed, tak S3. Vy\u017eaduje samostatnou datab\u00e1zi pro ukl\u00e1d\u00e1n\u00ed hash tabulky deduplikace. Mezi nev\u00fdhody pat\u0159\u00ed: naps\u00e1n v Pythonu, m\u00e1 trochu neresponsive CLI.<\/p>\n<p><\/p>\n<p><strong><noindex><a rel=\"nofollow\" href=\"https:\/\/borgbackup.readthedocs.io\/en\/stable\/\">Borg Backup<\/a><\/noindex><\/strong> \u2014 fork <noindex><a rel=\"nofollow\" href=\"https:\/\/attic-backup.org\/\">Attic<\/a><\/noindex>, dlouho zn\u00e1m\u00fd a osv\u011bd\u010den\u00fd n\u00e1stroj pro z\u00e1lohov\u00e1n\u00ed, um\u00ed z\u00e1lohovat data a dob\u0159e je deduplikovat. Um\u00ed ukl\u00e1dat z\u00e1lohy jak m\u00edstn\u011b, tak na vzd\u00e1len\u00fd server prost\u0159ednictv\u00edm SCP. M\u016f\u017ee z\u00e1lohovat blokov\u00e1 za\u0159\u00edzen\u00ed, pokud je spu\u0161t\u011bn s p\u0159ep\u00edna\u010dem <code>--special<\/code>, mezi nev\u00fdhodami: p\u0159i vytv\u00e1\u0159en\u00ed z\u00e1lohy je repozit\u00e1\u0159 zcela zablokov\u00e1n, tak\u017ee pro ka\u017edou virtu\u00e1ln\u00ed ma\u0161inu se doporu\u010duje vytvo\u0159it samostatn\u00fd repozit\u00e1\u0159, co\u017e v podstat\u011b nen\u00ed probl\u00e9m, proto\u017ee se vytv\u00e1\u0159ej\u00ed velmi snadno.<\/p>\n<p><\/p>\n<p><strong><noindex><a rel=\"nofollow\" href=\"https:\/\/restic.net\/\">Restic<\/a><\/noindex><\/strong> \u2014 aktivn\u011b vyv\u00edjen\u00fd projekt, napsan\u00fd v Go, pom\u011brn\u011b rychl\u00fd a podporuje velk\u00e9 mno\u017estv\u00ed backend\u016f pro ukl\u00e1d\u00e1n\u00ed, mezi kter\u00fdmi je jak m\u00edstn\u00ed \u00falo\u017ei\u0161t\u011b, tak SCP, S3 a mnoho dal\u0161\u00edho. Zvl\u00e1\u0161\u0165 je t\u0159eba zm\u00ednit, \u017ee existuje speci\u00e1ln\u011b vytvo\u0159en\u00fd <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/restic\/rest-server\">rest-server<\/a><\/noindex> pro Restic, kter\u00fd umo\u017e\u0148uje nejrychlej\u0161\u00ed export \u00falo\u017ei\u0161t\u011b pro pou\u017eit\u00ed na d\u00e1lku. Ze v\u0161ech uveden\u00fdch mi nejv\u00edce vyhovoval. Um\u00ed z\u00e1lohovat ze stdin. Skoro \u017e\u00e1dn\u00e9 znateln\u00e9 nev\u00fdhody nem\u00e1, ale m\u00e1 n\u011bkolik specifik:<\/p>\n<p><\/p>\n<ul>\n<li>\n<p>Za prv\u00e9, pokusil jsem se ho pou\u017e\u00edt v re\u017eimu sd\u00edlen\u00e9ho repozit\u00e1\u0159e pro v\u0161echny virtu\u00e1ln\u00ed ma\u0161iny (jako Benji) a to fungovalo docela dob\u0159e, ale operace obnoven\u00ed trvaly pom\u011brn\u011b dlouho, proto\u017ee se v\u017edy p\u0159ed obnoven\u00edm Restic pokou\u0161\u00ed p\u0159e\u010d\u00edst metadata v\u0161ech z\u00e1loh. Tento probl\u00e9m se snadno vy\u0159e\u0161il, stejn\u011b jako u Borg, vytvo\u0159en\u00edm samostatn\u00e9ho repozit\u00e1\u0159e pro ka\u017edou virtu\u00e1ln\u00ed ma\u0161inu. Tento p\u0159\u00edstup se uk\u00e1zal b\u00fdt velmi efektivn\u00ed tak\u00e9 pro spr\u00e1vu z\u00e1loh. Odd\u011blen\u00e9 repozit\u00e1\u0159e mohou m\u00edt samostatn\u00e9 heslo pro p\u0159\u00edstup k dat\u016fm, a tak se nemus\u00edme b\u00e1t, \u017ee glob\u00e1ln\u00ed repozit\u00e1\u0159 se n\u011bjak po\u0161kod\u00ed. Nov\u00e9 repozit\u00e1\u0159e lze tak\u00e9 vytv\u00e1\u0159et stejn\u011b snadno jako v Borg Backup.<\/p>\n<p><\/p>\n<p>V ka\u017ed\u00e9m p\u0159\u00edpad\u011b se deduplikace prov\u00e1d\u00ed pouze vzhledem k p\u0159edchoz\u00ed verzi z\u00e1lohy, p\u0159i\u010dem\u017e p\u0159edchoz\u00ed z\u00e1loha je ur\u010dena podle cesty pro uvedenou z\u00e1lohu. Tak\u017ee pokud z\u00e1lohujete r\u016fzn\u00e9 objekty z stdin do spole\u010dn\u00e9ho \u00falo\u017ei\u0161t\u011b, nezapome\u0148te uv\u00e9st mo\u017enost <code>--stdin-filename<\/code>, nebo ka\u017ed\u00fd \u010das explicitn\u011b uv\u00e1d\u011bt mo\u017enost <code>--parent<\/code>.<\/p>\n<p>\n<\/li>\n<\/ul>\n<p><\/p>\n<ul>\n<li>\n<p>Za druh\u00e9, obnoven\u00ed do stdout trv\u00e1 v\u00fdrazn\u011b d\u00e9le ne\u017e obnoven\u00ed na souborov\u00fd syst\u00e9m kv\u016fli jeho paralelnosti. V budoucnu pl\u00e1nujeme p\u0159idat t\u011bsn\u011bj\u0161\u00ed podporu z\u00e1loh pro blokov\u00e1 za\u0159\u00edzen\u00ed.<\/p>\n<p>\n<\/li>\n<li>\n<p>Za t\u0159et\u00ed, v sou\u010dasn\u00e9 dob\u011b se doporu\u010duje pou\u017e\u00edvat <noindex><a rel=\"nofollow\" href=\"https:\/\/beta.restic.net\/?sort=time&amp;order=desc\">verzi z master<\/a><\/noindex>, proto\u017ee verze 0.9.6 m\u00e1 chybu s dlouh\u00fdm obnoven\u00edm velk\u00fdch soubor\u016f.<\/p>\n<p>\n<\/li>\n<\/ul>\n<p><\/p>\n<p>Abych otestoval \u00fa\u010dinnost z\u00e1lohov\u00e1n\u00ed a rychlost z\u00e1pisu \/ obnoven\u00ed ze z\u00e1lohy, vytvo\u0159il jsem samostatn\u00e9 \u00falo\u017ei\u0161t\u011b a pokusil se z\u00e1lohovat mal\u00fd obraz virtu\u00e1ln\u00edho stroje (21 GB). Byly provedeny dv\u011b z\u00e1lohy bez zm\u011bny origin\u00e1lu, p\u0159i\u010dem\u017e byla pou\u017eita ka\u017ed\u00e1 z uveden\u00fdch mo\u017enost\u00ed, abych zjistil, jak\u00fdm tempem se deduplikovan\u00e1 data kop\u00edruj\u00ed.<\/p>\n<p><\/p>\n<p><img decoding=\"async\" alt=\"Z\u00e1lohovac\u00ed \u00falo\u017ei\u0161t\u011b pro tis\u00edce virtu\u00e1ln\u00edch stroj\u016f pomoc\u00ed voln\u00fdch n\u00e1stroj\u016f\" src=\"\/wp-content\/uploads\/2020\/05\/acab0d9f0d535e29ff272fef4e92de0f.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/p>\n<p><\/p>\n<p>Jak m\u016f\u017eeme vid\u011bt, Borg Backup m\u00e1 nejlep\u0161\u00ed pom\u011br efektivity p\u0159i po\u010d\u00e1te\u010dn\u00ed z\u00e1loze, ale zaost\u00e1v\u00e1 jak rychlost\u00ed z\u00e1pisu, tak obnovy.<\/p>\n<p><\/p>\n<p>Restic se uk\u00e1zal b\u00fdt rychlej\u0161\u00ed ne\u017e Benji Backup, ale d\u00e9le obnovuje do stdout a bohu\u017eel zat\u00edm neum\u00ed zapisovat p\u0159\u00edmo do blokov\u00e9ho za\u0159\u00edzen\u00ed.<\/p>\n<p><\/p>\n<p>Zv\u00e1\u017eil jsem v\u0161echny pro a proti a rozhodl jsem se z\u016fstat u <strong>restic<\/strong> s <strong>rest-server<\/strong> jako nejpohodln\u011bj\u0161\u00edm a perspektivn\u00edm \u0159e\u0161en\u00ed pro z\u00e1lohov\u00e1n\u00ed.<\/p>\n<p><\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/asciinema.org\/a\/333393\"><img decoding=\"async\" alt=\"Z\u00e1lohovac\u00ed \u00falo\u017ei\u0161t\u011b pro tis\u00edce virtu\u00e1ln\u00edch stroj\u016f pomoc\u00ed voln\u00fdch n\u00e1stroj\u016f\" src=\"\/wp-content\/uploads\/2020\/05\/cb174ab1522f529dea0712b64c0ac923.jpeg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/p>\n<p><\/p>\n<p>V tomto screencastu m\u016f\u017eete vid\u011bt, jak je 10gigabitov\u00fd kan\u00e1l pln\u011b utilizov\u00e1n p\u0159i n\u011bkolika sou\u010dasn\u011b spu\u0161t\u011bn\u00fdch z\u00e1lohovac\u00edch operac\u00edch. Je t\u0159eba poznamenat, \u017ee vyu\u017eit\u00ed disk\u016f ve stejnou dobu nevystoup\u00ed nad 30%.<\/p>\n<p><\/p>\n<p>S dosa\u017een\u00fdm \u0159e\u0161en\u00edm jsem byl v\u00edce ne\u017e spokojen!<\/p>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/504152\/\">habr.com<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0438\u0432\u0435\u0442, \u043d\u0435\u0434\u0430\u0432\u043d\u043e \u043c\u043d\u0435 \u043f\u043e\u043f\u0430\u043b\u0430\u0441\u044c \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u0430\u044f \u0437\u0430\u0434\u0430\u0447\u043a\u0430 \u043d\u0430\u0441\u0442\u0440\u043e\u0438\u0442\u044c \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0435 \u0434\u043b\u044f \u0431\u044d\u043a\u0430\u043f\u0430 \u0431\u043e\u043b\u044c\u0448\u043e\u0433\u043e \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u0430 \u0431\u043b\u043e\u0447\u043d\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432. \u041a\u0430\u0436\u0434\u0443\u044e \u043d\u0435\u0434\u0435\u043b\u044e \u043c\u044b \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c \u0440\u0435\u0437\u0435\u0440\u0432\u043d\u043e\u0435 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0432\u0441\u0435\u0445 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u044b\u0445 \u043c\u0430\u0448\u0438\u043d \u0432 \u043d\u0430\u0448\u0435\u043c \u043e\u0431\u043b\u0430\u043a\u0435, \u0442\u0430\u043a\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u043d\u0443\u0436\u043d\u043e \u0443\u043c\u0435\u0442\u044c \u043e\u0431\u0441\u043b\u0443\u0436\u0438\u0432\u0430\u0442\u044c \u0442\u044b\u0441\u044f\u0447\u0438 \u0440\u0435\u0437\u0435\u0440\u0432\u043d\u044b\u0445 \u043a\u043e\u043f\u0438\u0439 \u0438 \u0434\u0435\u043b\u0430\u0442\u044c \u044d\u0442\u043e \u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e \u0431\u044b\u0441\u0442\u0440\u043e \u0438 \u044d\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e. \u041a \u0441\u043e\u0436\u0430\u043b\u0435\u043d\u0438\u044e \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u044b\u0435 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0446\u0438\u0438 RAID5, RAID6 \u0432 \u0434\u0430\u043d\u043d\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043d\u0430\u043c \u043d\u0435 \u043f\u043e\u0434\u0445\u043e\u0442\u044f\u0442 \u0432 \u0432\u0438\u0434\u0443 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":83101,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[688],"tags":[],"class_list":["post-83100","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-administrirovanie"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0438\u0432\u0435\u0442.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/cs\/blog\/administrirovanie\/bekap-hranilishhe-dlya-tysyach-virtualnyh-mashin-svobodnymi-instrumentami\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" content=\"cs_CZ\" 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