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Corrupt superblock repair

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This commit is contained in:
Nikhil Kshirsagar
2019-10-25 15:02:56 +05:30
parent 0fc7529c01
commit 91b4714e38
14 changed files with 674 additions and 226 deletions
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117
functional-tests/thin-functional-tests.scm
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@ -51,6 +51,16 @@
(with-temp-file-sized ((md "thin.bin" (meg 4)))
b1 b2 ...))))
(define (damage-superblock md)
(system (string-append "dd if=/dev/zero of=" md " bs=4K count=1 conv=notrunc > /dev/null 2>&1")))
(define-syntax with-damaged-superblock
(syntax-rules ()
((_ (md) b1 b2 ...)
(with-valid-metadata (md)
(damage-superblock md)
b1 b2 ...))))
;; We have to export something that forces all the initialisation expressions
;; to run.
(define (register-thin-tests) #t)
@ -230,6 +240,54 @@
(run-ok-rcv (stdout stderr) (thin-dump md)
(assert-eof stderr))))
(define-scenario (thin-dump override transaction-id)
"thin_dump obeys the --transaction-id override"
(with-valid-metadata (md)
(run-ok-rcv (stdout stderr) (thin-dump "--transaction-id 2345" md)
(assert-eof stderr)
(assert-matches ".*transaction=\"2345\"" stdout))))
(define-scenario (thin-dump override data-block-size)
"thin_dump obeys the --data-block-size override"
(with-valid-metadata (md)
(run-ok-rcv (stdout stderr) (thin-dump "--data-block-size 8192" md)
(assert-eof stderr)
(assert-matches ".*data_block_size=\"8192\"" stdout))))
(define-scenario (thin-dump override nr-data-blocks)
"thin_dump obeys the --nr-data-blocks override"
(with-valid-metadata (md)
(run-ok-rcv (stdout stderr) (thin-dump "--nr-data-blocks 234500" md)
(assert-eof stderr)
(assert-matches ".*nr_data_blocks=\"234500\"" stdout))))
(define-scenario (thin-dump repair-superblock succeeds)
"thin_dump can restore a missing superblock"
(with-valid-metadata (md)
(run-ok-rcv (expected-xml stderr) (thin-dump "--transaction-id=5" "--data-block-size=128" "--nr-data-blocks=4096000" md)
(damage-superblock md)
(run-ok-rcv (repaired-xml stderr) (thin-dump "--repair" "--transaction-id=5" "--data-block-size=128" "--nr-data-blocks=4096000" md)
(assert-eof stderr)
(assert-equal expected-xml repaired-xml)))))
(define-scenario (thin-dump repair-superblock missing-transaction-id)
"--transaction-id is mandatory if the superblock is damaged"
(with-damaged-superblock (md)
(run-fail-rcv (_ stderr) (thin-dump "--repair" "--data-block-size=128" "--nr-data-blocks=4096000" md)
(assert-matches ".*transaction id.*" stderr))))
(define-scenario (thin-dump repair-superblock missing-data-block-size)
"--data-block-size is mandatory if the superblock is damaged"
(with-damaged-superblock (md)
(run-fail-rcv (_ stderr) (thin-dump "--repair" "--transaction-id=5" "--nr-data-blocks=4096000" md)
(assert-matches ".*data block size.*" stderr))))
(define-scenario (thin-dump repair-superblock missing-nr-data-blocks)
"--nr-data-blocks is mandatory if the superblock is damaged"
(with-damaged-superblock (md)
(run-fail-rcv (_ stderr) (thin-dump "--repair" "--transaction-id=5" "--data-block-size=128" md)
(assert-matches ".*nr data blocks.*" stderr))))
;;;-----------------------------------------------------------
;;; thin_rmap scenarios
;;;-----------------------------------------------------------
@ -356,4 +414,63 @@
(run-fail-rcv (_ stderr) (thin-repair "-i " xml)
(assert-starts-with "No output file provided." stderr))))
(define-scenario (thin-repair override transaction-id)
"thin_repair obeys the --transaction-id override"
(with-valid-metadata (md1)
(with-empty-metadata (md2)
(run-ok-rcv (stdout stderr) (thin-repair "--transaction-id 2345" "-i" md1 "-o" md2)
(assert-eof stderr))
(run-ok-rcv (stdout stderr) (thin-dump md2)
(assert-matches ".*transaction=\"2345\"" stdout)))))
(define-scenario (thin-repair override data-block-size)
"thin_repair obeys the --data-block-size override"
(with-valid-metadata (md1)
(with-empty-metadata (md2)
(run-ok-rcv (stdout stderr) (thin-repair "--data-block-size 8192" "-i" md1 "-o" md2)
(assert-eof stderr))
(run-ok-rcv (stdout stderr) (thin-dump md2)
(assert-matches ".*data_block_size=\"8192\"" stdout)))))
(define-scenario (thin-repair override nr-data-blocks)
"thin_repair obeys the --nr-data-blocks override"
(with-valid-metadata (md1)
(with-empty-metadata (md2)
(run-ok-rcv (stdout stderr) (thin-repair "--nr-data-blocks 234500" "-i" md1 "-o" md2)
(assert-eof stderr))
(run-ok-rcv (stdout stderr) (thin-dump md2)
(assert-matches ".*nr_data_blocks=\"234500\"" stdout)))))
(define-scenario (thin-repair superblock succeeds)
"thin_repair can restore a missing superblock"
(with-valid-metadata (md1)
(run-ok-rcv (expected-xml stderr) (thin-dump "--transaction-id=5" "--data-block-size=128" "--nr-data-blocks=4096000" md1)
(damage-superblock md1)
(with-empty-metadata (md2)
(run-ok-rcv (_ stderr) (thin-repair "--transaction-id=5" "--data-block-size=128" "--nr-data-blocks=4096000" "-i" md1 "-o" md2)
(assert-eof stderr))
(run-ok-rcv (repaired-xml stderr) (thin-dump md2)
(assert-eof stderr)
(assert-equal expected-xml repaired-xml))))))
(define-scenario (thin-repair superblock missing-transaction-id)
"--transaction-id is mandatory if the superblock is damaged"
(with-damaged-superblock (md1)
(with-empty-metadata (md2)
(run-fail-rcv (_ stderr) (thin-repair "--data-block-size=128" "--nr-data-blocks=4096000" "-i" md1 "-o" md2)
(assert-matches ".*transaction id.*" stderr)))))
(define-scenario (thin-repair superblock missing-data-block-size)
"--data-block-size is mandatory if the superblock is damaged"
(with-damaged-superblock (md1)
(with-empty-metadata (md2)
(run-fail-rcv (_ stderr) (thin-repair "--transaction-id=5" "--nr-data-blocks=4096000" "-i" md1 "-o" md2)
(assert-matches ".*data block size.*" stderr)))))
(define-scenario (thin-repair superblock missing-nr-data-blocks)
"--nr-data-blocks is mandatory if the superblock is damaged"
(with-damaged-superblock (md1)
(with-empty-metadata (md2)
(run-fail-rcv (_ stderr) (thin-repair "--transaction-id=5" "--data-block-size=128" "-i" md1 "-o" md2)
(assert-matches ".*nr data blocks.*" stderr)))))
)