Hi Ethan and Matt,
I agree with Ethan. The second part of the comment says:
2596 + * There is an assumption that for this function to be called
there
2597 + * is enough space for at least MIN_SWAP_SIZE + MIN_DUMP_SIZE.
But this doesn't seam to be true in the code, since the function is
there to check the possiblity of not having enough space for the request
and returning (OM_FAILURE) if this happens.
My two cents,
Luis
Ethan Quach wrote:
Matt,
Looks good. Just a comment nit at perform_slim_insall.c
starting at line 2592. With your latest changes, this
comment isn't accurate anymore.
thanks,
-ethan
On 03/24/10 07:38, Matt Keenan wrote:
Code review request for following two bugs :
10115 - AI ignores desired swap listed in ai manifest
http://defect.opensolaris.org/bz/show_bug.cgi?id=10115
12960 - Should be possible to define dump ZVOL size in AI manifest
http://defect.opensolaris.org/bz/show_bug.cgi?id=12960
Webrev :
http://cr.opensolaris.org/~mattman/bug-10115-12960/
2nd round for review, made following updates after review :
- Changed ai manifest definition names, to make more readable :
<ai_device_swap> to <ai_swap_device>
<ai_device_dump> to <ai_dump_device>
- If not enough disk space to create the specified swap/dump then
install will fail.
Both bugs were addressed together as they affect same code paths,
plan is to push to tip only.
10115
-----
AI manifest currently provides specification for <ai_swap_size>,
however the contents of this element had never been implemented, it
was simply ignored.
Solution, was to read <ai_swap_size> from manifest, if defined and
pass through to liborchestrator via nvlist as new nvpair.
12960
-----
This is a request to allow the specification of dump size in AI
manifest.
Solution, was to define new section in AI manifest <ai_dump_device>
which can
contain new element <ai_dump_size>. Parse this element in AI and pass
through to liborchestrator in the same manner as swap size.
In both cases for swap and dump size, a specification of "0" size is
indicative that the user does not want a swap/dump zvol created.
The only instance where this is ignored is in the case of swap where
a system memory is low e.g. < 700MB, then a default swap slice of 512
is created (see disk_slices.c)
Swap and dump sizes are always optional, if neither are specified,
then the original algorithm for calculating swap and dump size is
used, which is
simply RAM/2.
If swap and/or dump is specified of > 0, and there is insufficient
disk space available to create the requested zvol(s), the install
will fail.
Following testing was carried out.
Machine : X86 Vbox Client
Disk Size : 16GB (16001 MB)
Ram Size : 1GB (1024 MB)
Recommended Software Size : ((4096 * 1.2) * 2) + 2048 = 11878 MB
Available disk space for swap/dump : (16001 MB - 11878 MB) = 4123 MB
Following scenarios were tested :
<ai_swap_size> <ai_dump_size> Swap Created Dump Created
--------------- ---------------- --------------- ------------
Not Specified Not Specified 512 511
0 Not Specified Not Created 511
250 Not Specified 250 511
1024 Not Specified 1024 511
4000 Not Specified Install fail, not enough disk space
Not Specified 0 512 Not Created
Not Specified 250 512 250
Not Specified 1024 512 1024
Not Specified 4000 Install fail, not enough disk space
0 0 Not Created Not Created
250 0 250 Not Created
1500 0 1500 Not Created
4000 0 4000 Not Created
5000 0 Install fail, not enough disk space
0 250 Not Created 256
0 1500 Not Created 1500
0 4000 Not Created 4000
0 5000 Install fail, not enough disk space
1024 1024 1024 1024
3000 3000 Install fail, not enough disk space
1024 4000 Install fail, not enough disk space
4000 1024 Install fail, not enough disk space
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