thin-provisioning-tools/functional-tests/device-mapper/dm-tests.scm

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(library
(device-mapper dm-tests)
(export register-dm-tests make-allocator)
(import (device-mapper ioctl)
(chezscheme)
(functional-tests)
(fmt fmt)
(list-utils)
(process)
(srfi s27 random-bits)
(temp-file))
;; We have to export something that forces all the initialisation expressions
;; to run.
(define (register-dm-tests) #t)
;; Hard coded, get these from the command line
(define test-dev "/dev/vda")
(define test-dev-size 209715200)
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(define-record-type segment (fields (mutable dev)
(mutable start)
(mutable end)))
(define (linear seg)
(make-target (- (segment-end seg) (segment-start seg))
"linear"
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(fmt #f (segment-dev seg) " " (segment-start seg))))
(define (make-allocator dev dev-len)
(let ((offset 0))
(lambda (len)
(let ((b offset)
(e (+ offset len)))
(if (> e dev-len)
(fail "not enough space for allocation")
(begin
(set! offset e)
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(linear (make-segment dev b e))))))))
(define-syntax with-test-allocator
(syntax-rules ()
((_ (var) b1 b2 ...)
(let ((var (make-allocator test-dev test-dev-size)))
b1 b2 ...))))
(define (linear-table allocator nr-targets)
(let loop ((nr-targets nr-targets)
(acc '()))
(if (zero? nr-targets)
(reverse acc)
(loop (- nr-targets 1)
(cons (allocator (* 8 (random-integer 1024)))
acc)))))
(define (similar-targets t1 t2)
(and (equal? (target-type t1)
(target-type t2))
(equal? (target-len t1)
(target-len t2))))
(define-syntax define-dm-scenario
(syntax-rules ()
((_ path (pv) desc b1 b2 ...)
(define-scenario path desc
(with-dm
(with-test-allocator (pv)
b1 b2 ...))))))
;;;-----------------------------------------------------------
;;; scenarios
;;;-----------------------------------------------------------
(define-scenario (dm create-interface)
"create and destroy an ioctl interface object"
(with-dm #t))
(define-scenario (dm create-device)
"create and destroy a device"
(with-dm
(with-empty-device (dev "foo" "uuidd")
#t)))
(define-scenario (dm duplicate-name-fails)
"You can't create two devices with the same name"
(with-dm
(with-empty-device (dev1 "foo" "uuid1")
(assert-raises
(with-empty-device (dev2 "foo" "uuid2") #t)))))
(define-scenario (dm duplicate-uuid-fails)
"You can't create two devices with the same uuid"
(with-dm
(with-empty-device (dev1 "foo" "uuid")
(assert-raises
(with-empty-device (dev2 "bar" "uuid") #t)))))
(define-scenario (dm load-single-target)
"You can load a single target table"
(with-dm
(with-empty-device (dev "foo" "uuid")
;; FIXME: export contructor for linear targets
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(load-table dev (list (linear (make-segment test-dev 0 102400)))))))
(define-dm-scenario (dm load-many-targets) (pv)
"You can load a large target table"
(with-empty-device (dev "foo" "uuid")
(load-table dev (linear-table pv 32))))
(define-dm-scenario (dm resume-works) (pv)
"You can resume a new target with a table"
(with-empty-device (dev "foo" "uuid")
(load-table dev (linear-table pv 8))
(resume-device dev)))
(define-dm-scenario (dm suspend-resume-cycle) (pv)
"You can pause a device."
(with-device (dev "foo" "uuid" (linear-table pv 8))
(suspend-device dev)
(resume-device dev)))
(define-dm-scenario (dm reload-table) (pv)
"You can reload a table"
(with-device (dev "foo" "uuid" (linear-table pv 16))
(pause-device dev
(load-table dev (linear-table pv 8)))))
(define-dm-scenario (dm list-devices) (pv)
"list-devices works"
(with-devices ((dev1 "foo" "uuid" (linear-table pv 4))
(dev2 "bar" "uuid2" (linear-table pv 4)))
(let ((names (map device-details-name (list-devices))))
(assert-member? "foo" names)
(assert-member? "bar" names))))
(define-dm-scenario (dm get-status) (pv)
"get-status works"
(let ((table (linear-table pv 4)))
(with-device (dev "foo" "uuid" table)
(let ((status (get-status dev)))
(assert-every similar-targets table status)))))
(define-dm-scenario (dm get-table) (pv)
"get-table works"
(let ((table (linear-table pv 4)))
(with-device (dev "foo" "uuid" table)
(let ((table-out (get-table dev)))
(assert-every similar-targets table table-out)))))
)