Patent US1646254A successfully refreshed from Google Patents.
EP0359384B1
Expired / Lapsed
EP
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Queued posted-write disk write method and apparatus with improved error handling
Assignee: Compaq Computer Corp
•
Filing: 1989-08-04
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Granted: 1998-01-14
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Expires: 2009-08-04
Abstract
No abstract record available.
Inventors
- 👤 Curtis R. Jones
- 👤 Robert S. Gready
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 22:53
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/0703; G06F11/0706; G06F11/073; G06F11/0727; G06F11/0793; G06F11/14; G06F11/1402; G06F11/1415; G06F11/1435; G06F12/00; G06F12/02; G06F12/08; G06F12/0802; G06F12/0804; G06F12/0866; G06F11/0751; G06F11/0754; G06F11/0757
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
93 words
A method of maintaining a posted-write queue upon
occurrence of a timeout or upon occurrence of a
specified type of error, to which queue may be added
information sectors, containing data to be stored on a
disk, addressed to respective corresponding disk sectors,
and from which queue the information sectors may be written
out to the respective corresponding disk sectors, the method comprising the steps of: blocking the addition of information sectors to the
queue; and attempting to write out each information sector already added to the queue to the corresponding disk
sector.
Claim 2
Dependent Claim
34 words
A method according to claim 1, wherein, upon a
specified type of error, for each attempt to write to the
corresponding disk sector that is unsuccessful, the
information sector is saved in the queue.
Claim 3
Dependent Claim
34 words
A method according to claim 2, further including the
step of attempting to perform, from the queue, subsequent
read requests or write requests directed to a disk sector
corresponding to any saved information sector.
Claim 4
Dependent Claim
118 words
A method according to claim 1, wherein upon a timeout, the addition of information sectors to
the queue is blocked and each information sector already
added to the queue is written out to the corresponding disk
sector; upon a specified type of write error, the addition of
information sectors to the queue is blocked, an attempt is
made to write out to the corresponding disk sector each
information sector already added to the queue, for each
attempt that is unsuccessful, the information sector is
saved in the queue, and any read request or write request
subsequent to the unsuccessful attempt that is directed to
a disk sector corresponding to the saved information sector
is serviced from the queue.
Claim 5
Dependent Claim
83 words
Apparatus for maintaining a posted-write queue in a
computer memory, to which queue may be added information
sectors, containing data to be stored on a disk, addressed
to respective corresponding disk sectors upon occurrence of
a timeout or upon occurrence of a specified type of
error, the apparatus including: means arranged to prevent the further addition of
information sectors to the queue; and means arranged to attempt to write out each
information sector already added to the queue to the corresponding disk
sector.
Claim 6
Dependent Claim
23 words
Apparatus according to claim 5, further including
means arranged to save in the queue each information sector
that is unsuccessfully written to disk.
Claim 7
Dependent Claim
43 words
Apparatus according to claim 6, further including
interrupt handlers and means arranged to service from the
queue any subsequent read request or write request received
and performed by the interrupt handlers and directed to a
disk sector corresponding to any saved information sector.
References Cited (Backward Citations)
No citation records indexed.
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